Tüm alıştırma soruları

3881 soru

Soru 281Soru →

A localized tornado strike has caused massive structural damage to a community center during a crowded event, resulting in numerous casualties. The first-responding nurse is applying the Simple Triage and Rapid Treatment (START) algorithm to prioritize care. Which individual should the nurse classify as requiring immediate, life-saving intervention (Red tag)?

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Cevap: An individual who is unable to stand, has a respiratory rate of 24 breaths per minute, lacks a palpable radial pulse, and has a capillary refill time of 4 seconds

Cevap

The individual who is unable to stand, has a respiratory rate of 24, lacks a palpable radial pulse, and has delayed capillary refill.
The correct answer identifies a client who fails the perfusion step of the START triage algorithm. Although their respiratory rate is adequate, the absence of a radial pulse and delayed capillary refill indicate compromised circulation, warranting an immediate (Red) tag.

Adım Adım Çözüm

1
Evaluate ambulatory status.
Determine if the client can walk. If yes, tag Green (Minor). If no, proceed to respiratory assessment.
Ambulatory status quickly identifies clients with adequate physiological reserves.
2
Assess respiratory rate (Breathing).
If apneic, open airway. If still apneic, tag Black. If breathing starts, tag Red. If spontaneous rate is > 30/min, tag Red. If < 30/min, proceed to perfusion.
Airway and breathing are the most critical determinants of immediate survival.
3
Assess perfusion.
Check for a palpable radial pulse or capillary refill. If pulse is absent or refill > 2 seconds, tag Red. If pulse is present, proceed to mental status.
Adequate circulation is required to maintain tissue viability and prevent shock.
4
Assess mental status.
Ask the client to follow a simple command (e.g., 'squeeze my hand'). If unable, tag Red. If able, tag Yellow (Delayed).
Inability to follow commands indicates significant neurological impairment or severe hypoxia.

Anahtar Kavram

Simple Triage and Rapid Treatment (START) Algorithm
Soru 282Soru →

The unit educator is observing a newly licensed nurse provide care for a confused client who requires bilateral soft wrist restraints to prevent the removal of a central venous catheter. Which action by the newly licensed nurse indicates a need for immediate intervention by the educator?

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Cevap: Securing the restraint ties to the side rails of the bed using a square knot.

Cevap

The action that requires immediate intervention is securing the restraint ties to the side rails of the bed using a square knot.
The action of tying restraints to the side rails using a square knot is fundamentally unsafe and requires immediate intervention by the educator. Restraints must always be attached to the movable portion of the bed frame to prevent traumatic injury if the bed position is changed or the side rail is lowered. Furthermore, a quick-release knot (such as a slip knot) must be used rather than a square knot to ensure the restraints can be rapidly removed in the event of an emergency.

Adım Adım Çözüm

1
Analyze the clinical scenario and the specific question being asked.
The question requires identifying the unsafe action (the action needing intervention) during restraint management.
Understanding whether you are looking for a correct or incorrect nursing intervention is critical for selecting the right answer.
2
Evaluate the method of restraint application described in the options.
Tying restraints to a side rail or using a square knot poses severe safety risks, such as injury when the bed is adjusted or inability to remove the restraint rapidly in an emergency.
CMS and NCLEX standards dictate that restraints must be secured to the movable portion of the bed frame using a quick-release knot.
3
Evaluate the delegated tasks and maintenance protocols.
Assigning ADLs to a UAP, releasing restraints every two hours, and documenting prior alternatives are all mandated, safe standards of care.
Eliminating the safe actions isolates the single unsafe practice.
4
Select the option that represents the protocol violation.
The improper application technique is identified as the required intervention.
This directly answers the prompt's request to find the action needing correction.

Anahtar Kavram

Safe Application and Maintenance of Physical Restraints
Soru 283Soru →

An adult client is transferred to the medical-surgical unit immediately after a percutaneous liver biopsy. To mitigate the risk of internal bleeding from the puncture site, which positioning strategy is most appropriate for this client?

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Cevap: Right side-lying with a small towel or pillow placed under the puncture site

Cevap

The client should be positioned right side-lying with a small towel or pillow under the puncture site.
Because the liver is a highly vascular organ located on the right side of the body, a percutaneous biopsy carries a significant risk of hemorrhage. Positioning the client on the right side applies direct mechanical pressure to the biopsy site against the ribs and mattress, creating a tamponade effect that promotes hemostasis.

Adım Adım Çözüm

1
Identify the primary complication associated with a percutaneous liver biopsy.
The liver is highly vascular, making internal hemorrhage the most significant immediate post-procedure risk.
Recognizing the risk dictates the specific nursing interventions required for client safety.
2
Determine the anatomical location of the organ and the goal of positioning.
The liver is located in the right upper quadrant of the abdomen. The clinical goal is to apply direct pressure to the biopsy site.
Applying external pressure helps to achieve hemostasis (tamponade) at the vascular puncture site.
3
Select the position that best achieves hemostasis based on anatomy.
Placing the client in a right side-lying position compresses the liver against the chest wall and mattress.
This specific physical compression minimizes bleeding and significantly reduces the risk of hemorrhagic shock.

Anahtar Kavram

Post-procedure care and therapeutic positioning to prevent hemorrhage following highly vascular organ biopsies.
Tahmini Süre:45s
Soru 284Soru →

An older adult client is hospitalized for treatment of a severe urinary tract infection. The client becomes acutely confused and continuously attempts to pull out their peripheral intravenous (IV) catheter. A colleague suggests obtaining a prescription for physical restraints. Which action should the nurse take first?

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Cevap: Implement and document less restrictive interventions, such as concealing the IV site with a stockinette and offering a distraction.

Cevap

The nurse should implement and document less restrictive interventions, such as concealing the IV site with a stockinette and offering a distraction.
The standard of care requires nurses to attempt and document less restrictive alternatives before resorting to physical restraints. Concealing the intravenous site with clothing or a stockinette, along with providing a safe distraction, are effective, non-restrictive measures that can prevent a confused client from disrupting their medical therapy.

Adım Adım Çözüm

1
Identify the client's immediate safety risk.
The older adult client is confused and at risk of disrupting essential medical therapy (IV access).
Recognizing the risk helps prioritize the need for a safe and effective intervention.
2
Evaluate the proposed intervention (physical restraints) against nursing standards.
Physical restraints should be a last resort. Less restrictive alternatives must be exhausted first, and PRN orders are prohibited.
The use of restraints carries significant physical and psychological risks. Strict legal and ethical guidelines mandate prioritizing the least restrictive measures.
3
Select the most appropriate initial nursing action.
The nurse should implement non-restrictive measures, such as covering the IV site and providing sensory distraction.
This action addresses the safety concern while complying with the standard of care for restraint avoidance.

Anahtar Kavram

Restraint Alternatives and Safety Devices
Soru 285Soru →

An older adult client with a history of severe bilateral peripheral arterial disease (PAD) reports intense, burning pain in the lower extremities that wakes them during the night. The client's lower extremities are hairless, with thin, dry skin that is cool to the touch. The nurse is planning basic care to promote comfort and sleep. Which nursing action is most appropriate?

Cevabı ve açıklamayı göster

Cevap: Assist the client to sit on the side of the bed and dangle the legs over the edge when the pain occurs.

Cevap

Assist the client to sit on the side of the bed and dangle the legs over the edge when the pain occurs.
Clients with severe peripheral arterial disease (PAD) often experience ischemic rest pain at night due to decreased cardiac output during sleep and the horizontal position of the legs in bed, which further reduces arterial perfusion. Assisting the client to dangle their legs over the side of the bed places the extremities in a dependent position, allowing gravity to enhance arterial blood flow to the distal tissues and providing significant comfort.

Adım Adım Çözüm

1
Analyze the client's clinical presentation and medical history.
The client has severe peripheral arterial disease (PAD) and is experiencing nocturnal ischemic rest pain due to poor perfusion.
Identifying the underlying pathophysiology (arterial versus venous insufficiency) is required to determine the correct physiological comfort measure.
2
Evaluate the hemodynamic goal for a client with arterial insufficiency.
The primary goal is to maximize arterial blood flow to the lower extremities.
Arterial flow is severely compromised by narrowed or blocked arteries, causing ischemic pain when the legs are in a horizontal position during sleep.
3
Select the appropriate positioning intervention to achieve this hemodynamic goal.
Placing the legs in a dependent position (dangling over the edge of the bed) is selected.
Gravity assists arterial blood flow to the distal tissues, relieving the ischemic pain.

Anahtar Kavram

Basic care and comfort for peripheral arterial disease involves positioning the extremities in a dependent position to promote arterial circulation.
Soru 286Soru →

A nurse is preparing to remove a client's non-tunneled percutaneous central venous catheter (CVC). To minimize the risk of an air embolism, in what order should the nurse perform the following actions? Arrange the steps in the correct sequence from first to last.

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Cevabı ve açıklamayı göster

Cevap

The correct sequence for removing a central venous catheter to prevent air embolism is to first position the client supine, then instruct them to perform the Valsalva maneuver, remove the catheter smoothly, apply immediate direct pressure, and finally secure an occlusive dressing.
Preventing an air embolism during CVC removal requires manipulating pressure gradients. Supine positioning and the Valsalva maneuver increase central venous pressure above atmospheric pressure. Swift removal limits exposure time, followed immediately by pressure and an occlusive dressing to seal the tract.

Adım Adım Çözüm

1
Place the client in a supine or Trendelenburg position.
Intrathoracic venous pressure is increased.
Lowering the head of the bed utilizes gravity to increase venous pressure above atmospheric pressure, reducing the risk of air being sucked into the central circulation.
2
Instruct the client to take a deep breath and bear down.
The client performs the Valsalva maneuver.
This maneuver further raises intrathoracic pressure precisely at the moment the vein will be exposed, creating a positive pressure gradient that pushes blood out rather than pulling air in.
3
Remove the catheter smoothly and continuously.
The catheter is extracted without tissue trauma.
A swift, continuous motion limits the duration the venous pathway is open to the atmosphere.
4
Apply direct manual pressure to the site with sterile gauze.
Hemostasis begins and the entry tract is physically blocked.
Firm pressure for 5 to 10 minutes stops bleeding and prevents air aspiration while a stable clot forms.
5
Apply an airtight occlusive dressing over the site.
The insertion site is completely sealed.
An occlusive dressing prevents any delayed air entry into the tract over the next 24 to 72 hours.

Anahtar Kavram

Central Venous Catheter Removal and Air Embolism Prevention
Soru 287Soru →

A client recovering from an ischemic stroke with expressive aphasia repeatedly attempts to pull out their nasogastric (NG) feeding tube. After documenting the failure of multiple less restrictive interventions, the healthcare provider prescribes bilateral soft wrist restraints. Which actions should the nurse include in the client's plan of care? Select all that apply.

Geçerli olan tümünü seçin

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Cevap: Remove the restraints to provide skin care and range-of-motion exercises every 2 hours.; Fasten the restraint ties to the movable portion of the bed frame.; Verify that two fingers can comfortably fit between the restraint and the client's wrist.

Cevap

The correct actions include releasing the restraints every 2 hours for skin care and range-of-motion, fastening the ties to the movable part of the bed frame, and verifying a two-finger gap between the restraint and the wrist.
Applying restraints safely requires strict adherence to evidence-based protocols to prevent injury and preserve circulation. Fastening the ties to the movable portion of the bed frame ensures the restraints will not dangerously tighten if the bed's position is adjusted. Verifying that two fingers can slide underneath the restraint prevents localized tissue ischemia and neurovascular compromise. Finally, the nurse is required to release the restraints at least every 2 hours to provide essential skin care, perform range-of-motion exercises, and conduct comprehensive assessments.

Adım Adım Çözüm

1
Identify the clinical scenario and the type of restraint ordered.
The client requires non-violent (medical-surgical) restraints to prevent the removal of a medical device (NG tube).
Different types of restraints (behavioral vs. medical-surgical) have distinct legal and regulatory protocols.
2
Evaluate the options regarding the physical application of the restraint.
The restraints must be attached to the movable bed frame, allow a two-finger gap, and utilize a quick-release knot.
These safety standards prevent excessive tension during bed movement, protect distal circulation, and allow for rapid removal in emergencies.
3
Evaluate the options regarding ongoing monitoring, delegation, and documentation.
The RN must perform the assessments (no UAP delegation), the restraints must be released every 2 hours for care, and the prescription requires a 24-hour renewal.
Strict regulatory standards mandate RN-level assessment for neurovascular compromise and strict time limits on provider prescriptions to ensure restraints are discontinued as soon as possible.

Anahtar Kavram

Safe application, monitoring, and legal requirements for medical-surgical restraints.
Tahmini Süre:1m 30s
Soru 288Soru →

The healthcare team is managing a client diagnosed with active pulmonary tuberculosis who also exhibits acute delirium and a high risk for falls. Which actions should the registered nurse include in the comprehensive safety plan? Select all that apply.

Geçerli olan tümünü seçin

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Cevap: Maintain the client in a negative-pressure airflow room with the door securely closed.; Keep the client's bed in the lowest possible position with the wheels locked.; Place a standard surgical mask on the client if transport outside the room is necessary for essential testing.

Cevap

The correct interventions are maintaining the client in a negative-pressure room with the door closed, keeping the bed in the lowest locked position, and placing a surgical mask on the client during transport.
Appropriate safety management for this complex client requires a combination of strict airborne precautions (negative-pressure room, client wearing a surgical mask when outside the room) and standard fall prevention measures (bed in the lowest position). These evidence-based interventions protect both the client from physical injury and the facility from infectious spread.

Adım Adım Çözüm

1
Identify the primary safety and infection control risks for the client based on the clinical presentation.
The client requires airborne precautions due to active pulmonary tuberculosis and requires fall/injury prevention due to acute delirium.
Recognizing multiple competing priorities ensures that all aspects of client safety are comprehensively addressed in the care plan.
2
Evaluate the proposed interventions for proper infection control (airborne precautions).
A negative-pressure room with the door closed is required. Staff must wear N95 respirators (not standard surgical masks), and the client must wear a standard surgical mask if transport is essential.
These specific measures are mandated by evidence-based guidelines to prevent the transmission of airborne droplet nuclei.
3
Evaluate the proposed interventions for fall prevention and delirium management.
The bed must be kept in the lowest position with wheels locked. Assessments cannot be delegated to unlicensed assistive personnel, and restraints should not be used as an initial intervention to prevent wandering.
Safe practice prioritizes the least restrictive measures for confused clients and ensures tasks requiring clinical judgment remain with the registered nurse.

Anahtar Kavram

Integration of Transmission-Based Precautions with Environmental Safety and Appropriate Delegation
Soru 289Soru →

A nurse is preparing to assist a healthcare provider with a bedside lumbar puncture for a client admitted with suspected bacterial meningitis. Which nursing actions are appropriate to ensure client safety and prevent procedure-related complications? Select all that apply.

Geçerli olan tümünü seçin

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Cevap: Verify the client's identity using two approved identifiers prior to the start of the procedure.; Assist the client into a lateral decubitus position with the knees flexed toward the chest.; Confirm that a signed informed consent document is present in the client's medical record.

Cevap

The correct actions include verifying the client's identity using two identifiers, assisting the client into a lateral decubitus position with knees flexed, and confirming the presence of a signed informed consent document.
Verifying the client's identity and confirming informed consent are essential components of the Universal Protocol to prevent procedural errors. Assisting the client into the lateral decubitus position with knees flexed safely separates the vertebrae, providing clear access for the provider and minimizing the risk of spinal or nerve injury during the lumbar puncture.

Adım Adım Çözüm

1
Evaluate pre-procedure actions for compliance with the Universal Protocol.
Verifying the client's identity and checking for a signed informed consent are confirmed as mandatory steps.
These steps prevent unauthorized or wrong-patient procedures, which are critical components of error prevention.
2
Evaluate the safety of intra-procedure positioning.
The lateral decubitus position with flexed knees is identified as the correct positioning.
This specific position safely separates the intervertebral spaces, giving the provider clear access and preventing spinal or nerve injuries during needle insertion.
3
Evaluate post-procedure actions and medication administration practices.
Delegating initial assessments, skipping IV compatibility checks, and elevating the head of the bed are identified as unsafe actions.
Initial assessments after invasive procedures must be performed by the RN. Medication compatibility must always be verified to prevent adverse events. Clients must remain flat after a lumbar puncture to prevent spinal headaches.

Anahtar Kavram

Procedural safety measures, including Universal Protocol, safe client positioning, and error prevention during medication administration and task delegation.
Soru 290Soru →

A client weighing 105 kg105\text{ kg} is admitted to the emergency department with an acute ischemic stroke. The healthcare provider prescribes intravenous alteplase therapy at 0.9 mg/kg0.9\text{ mg/kg}. Which of the following nursing actions are required for the safe administration and monitoring of this pharmacological therapy? (Select all that apply.)

Geçerli olan tümünü seçin

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Cevap: Administer 10%10\% of the calculated total alteplase dose as an intravenous bolus over 1 minute1\text{ minute} prior to starting the continuous infusion.; Delay the insertion of indwelling urinary catheters, nasogastric tubes, or intra-arterial catheters for at least 24 hours24\text{ hours} after the infusion.; Administer prescribed intravenous labetalol if the client's systolic blood pressure exceeds 180 mm Hg180\text{ mm Hg} during the infusion.

Cevap

The safe administration of alteplase requires giving 10%10\% of the total maximum 90 mg90\text{ mg} dose as a 1-minute1\text{-minute} bolus, strictly controlling systolic blood pressure below 180 mm Hg180\text{ mm Hg}, and avoiding any invasive procedures for at least 24 hours24\text{ hours} to prevent severe bleeding complications.
Safe alteplase administration involves giving 10%10\% of the total dose as a bolus over 1 minute1\text{ minute}, strictly managing blood pressure (systolic < 180 mm Hg180\text{ mm Hg}) with rapid-acting antihypertensives, and minimizing bleeding risks by delaying invasive procedures (like catheter insertions) for 24 hours24\text{ hours}.

Adım Adım Çözüm

1
Calculate the safe medication dosage, recognizing the absolute maximum limit.
The calculated dose for a 105 kg105\text{ kg} client is 94.5 mg94.5\text{ mg}, but the absolute maximum allowable dose must be capped at 90 mg90\text{ mg}.
Exceeding the 90 mg90\text{ mg} maximum dose significantly increases the risk of fatal intracranial hemorrhage, regardless of the client's actual body weight.
2
Determine the proper administration method and rate.
The protocol dictates that 10%10\% of the total dose is given as an IV bolus over 1 minute1\text{ minute}, with the remaining 90%90\% infused continuously over 60 minutes60\text{ minutes}.
This biphasic administration is required to quickly achieve and then safely maintain therapeutic thrombolytic blood levels.
3
Establish a dedicated intravenous line.
Alteplase must run through its own dedicated line, not piggybacked with other medications like potassium chloride.
Alteplase is physically incompatible with many medications and requires uninterrupted, precise infusion rates.
4
Implement required safety monitoring protocols during and after the infusion.
Neurological status and vital signs must be checked every 15 minutes15\text{ minutes}, blood pressure must be kept below 180/105 mm Hg180/105\text{ mm Hg}, and all invasive procedures must be delayed.
These measures are critical to promptly identify hemorrhagic conversion and minimize bleeding risks while the systemic thrombolytic effect is active.

Anahtar Kavram

Alteplase (tPA) Administration and Monitoring Protocol
Soru 291Soru →

A hazardous chemical leak occurs at an industrial site, and several contaminated victims arrive on foot outside the hospital's main entrance. The facility's Emergency Operations Plan for a hazardous materials (HAZMAT) incident is activated. Which of the following actions should the designated nursing response team take? Select all that apply.

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Cevap: Direct the individuals to a designated external decontamination area away from the main hospital entrance.; Instruct the victims to carefully remove all their clothing and personal belongings.; Don a chemical-resistant suit with a powered air-purifying respirator (PAPR) before making contact with the victims.

Cevap

The correct actions include donning appropriate protective equipment (such as chemical-resistant suits and PAPRs), directing victims to an external decontamination area, and instructing them to remove their clothing and belongings.
In a HAZMAT incident, the highest priority is preventing secondary contamination of the healthcare facility and its staff. Establishing a secure, external decontamination zone ensures the hospital remains safe and operational. Staff must protect themselves first by donning appropriate specialized PPE (like PAPRs and chemical-resistant suits) prior to any client contact. Instructing clients to carefully remove their clothing is a critical first step in decontamination, as it removes the vast majority (up to 90%) of the hazardous substance.

Adım Adım Çözüm

1
Analyze the emergency scenario and the immediate risks.
Contaminated victims from a HAZMAT incident are presenting directly to the facility. The primary risk is secondary exposure to the hospital environment, staff, and current inpatients.
Identifying the nature of the threat dictates the prioritization of actions according to the Emergency Operations Plan.
2
Identify the primary goal of the HAZMAT response.
The primary goal is containment and decontamination outside the facility.
Allowing contaminated individuals into the building would require evacuating and shutting down the emergency department.
3
Determine the correct evidence-based interventions for the response team.
Staff must don specialized PPE before contact. Victims must be directed to an external area and instructed to remove their clothing, which removes the majority of the chemical agent.
Staff safety is paramount to maintain the emergency response, and clothing removal is the most efficient first step of gross decontamination.
4
Evaluate and eliminate incorrect or harmful actions.
Bypassing decontamination for trauma care, using hot water/vigorous scrubbing, and using standard biohazard bags are identified as incorrect and unsafe actions.
These actions increase the risk of systemic absorption for the victim or secondary exposure for the staff and facility.

Anahtar Kavram

Hazardous Materials (HAZMAT) Decontamination Protocols
Soru 292Soru →

An older adult client who underwent a right total hip arthroplasty (posterior approach) 2 days ago has developed acute delirium. The client is restless, frequently attempts to get out of bed unassisted, and requires assistance with activities of daily living. When updating the client's plan of care, what interventions should the nurse implement to safely address the client's basic care and comfort needs? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Maintain an abduction wedge between the client's legs while resting in a supine position.; Implement a scheduled toileting routine and provide a well-lit environment during waking hours.

Cevap

The correct actions are to maintain an abduction wedge between the client's legs while resting in a supine position, and to implement a scheduled toileting routine while providing a well-lit environment during waking hours.
The correct interventions focus on safely meeting the client's fundamental physiological needs without compromising surgical integrity. Maintaining an abduction wedge is essential to prevent hip adduction and dislocation after a posterior approach arthroplasty. A scheduled toileting routine combined with a well-lit environment addresses the client's elimination needs proactively and serves as a highly effective, non-pharmacologic intervention to manage delirium and reduce restlessness.

Adım Adım Çözüm

1
Analyze the client's surgical history and associated precautions.
The client had a posterior approach total hip arthroplasty, which requires maintaining hip abduction and avoiding hip flexion greater than 90 degrees.
Identifying post-operative precautions dictates safe positioning and mobility interventions during basic care.
2
Evaluate the client's cognitive and behavioral status.
The client is experiencing acute delirium, restlessness, and attempts to get out of bed unassisted.
Understanding the cognitive impairment helps in selecting appropriate non-pharmacological safety and comfort measures without prematurely resorting to restraints.
3
Review the proposed nursing interventions against the client's needs and safety guidelines.
Maintaining an abduction wedge and implementing a scheduled toileting routine safely address the client's physical and cognitive needs while avoiding contraindicated positions, improper delegation, and premature restraint use.
Basic care must align with both orthopedic precautions and evidence-based delirium management protocols.

Anahtar Kavram

Basic Care and Comfort Integration for Complex Postoperative Clients
Soru 293Soru →

A registered nurse is managing the care of a young adult diagnosed with diabetic ketoacidosis. The individual has been receiving a continuous intravenous drip of regular insulin alongside isotonic saline for several hours. A recent metabolic panel and arterial blood gas analysis show a pH of 7.26, PaCO2 of 28 mm Hg, bicarbonate of 14 mEq/L, and a serum potassium level of 3.2 mEq/L. Electrocardiogram monitoring reveals flattened T waves and emerging U waves. Current hemodynamics demonstrate a systolic pressure of 108 mm Hg, diastolic of 70 mm Hg, and a pulse of 110 beats per minute. Which of the following clinical interventions should the nurse prioritize?

Cevabı ve açıklamayı göster

Cevap: Suspend the continuous insulin infusion and initiate prescribed intravenous potassium replacement.

Cevap

The correct intervention is to immediately suspend the continuous insulin infusion and initiate prescribed intravenous potassium replacement.
The individual is experiencing profound hypokalemia, a highly dangerous complication of diabetic ketoacidosis treatment. Regular insulin drives potassium into the intracellular space, rapidly depleting serum levels. When serum potassium falls below 3.3 mEq/L, standard protocols dictate immediately suspending the insulin infusion to prevent fatal cardiac dysrhythmias—as evidenced by the flattened T waves and emerging U waves—and initiating potassium replacement. Continuing insulin would exacerbate the life-threatening hypokalemia.

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) and metabolic panel results.
The ABGs reveal a partially compensated metabolic acidosis, but the critical and immediately life-threatening finding is the serum potassium level of 3.2 mEq/L.
Identifying the most life-threatening physiological abnormality is the first step in clinical prioritization.
2
Correlate laboratory findings with the clinical presentation and electrocardiogram (ECG).
The flattened T waves and emerging U waves confirm clinically significant and dangerous hypokalemia.
Potassium plays a vital role in cardiac action potentials, and uncorrected hypokalemia can quickly progress to lethal ventricular dysrhythmias.
3
Evaluate the impact of current pharmacological therapy on the client's physiological status.
The continuous insulin infusion is actively driving the remaining extracellular potassium into the cells, exacerbating the hypokalemia.
Understanding the systemic physiological mechanisms of action of insulin is required to anticipate its adverse effects.
4
Determine the immediate priority intervention based on established treatment guidelines.
The nurse must immediately hold the insulin infusion and prepare to administer intravenous potassium.
Standard diabetic ketoacidosis protocols mandate holding insulin therapy when serum potassium falls below 3.3 mEq/L to prevent cardiac arrest.

Anahtar Kavram

Management of life-threatening hypokalemia as a physiological complication of insulin therapy in diabetic ketoacidosis.
Tahmini Süre:2m 0s
Soru 294Soru →

A critically ill client is admitted to the intensive care unit with a diagnosis of severe diabetic ketoacidosis. Initial laboratory results reveal a serum glucose of 815815 mg/dL (45.245.2 mmol/L), an arterial pH of 7.087.08, and a serum potassium of 3.03.0 mEq/L (3.03.0 mmol/L). The client exhibits profound lethargy, deep and rapid respirations, and poor skin turgor. Arrange the following therapeutic interventions in the correct physiological priority sequence to safely manage this client's acute decompensation.

Öğeleri doğru sıraya koymak için sürükleyin

Cevabı ve açıklamayı göster

Cevap

The correct priority sequence is: 1) Initiate 0.9%0.9\% sodium chloride, 2) Administer potassium chloride, 3) Commence regular insulin, 4) Evaluate blood glucose until it reaches 250250 mg/dL, 5) Incorporate 5%5\% dextrose into fluids.
The management of diabetic ketoacidosis requires a precise sequence to adapt to the physiological crisis. First, severe osmotic diuresis causes profound hypovolemia, making rapid fluid resuscitation with 0.9%0.9\% sodium chloride the absolute priority to restore perfusion. Second, the client's potassium is critically low (3.03.0 mEq/L). Because insulin drives potassium into the cells, administering insulin before replacing potassium would trigger life-threatening hypokalemia and cardiac dysrhythmias. Therefore, potassium chloride must be administered next. Third, a continuous regular insulin infusion is started to halt ketogenesis and correct the metabolic acidosis. Fourth, serial blood glucose levels are monitored closely. Finally, when the blood glucose decreases to 250250 mg/dL (13.913.9 mmol/L), 5%5\% dextrose is added to the intravenous fluids. This prevents hypoglycemia and cerebral edema while allowing the insulin infusion to continue until the anion gap closes and acidosis resolves.

Adım Adım Çözüm

1
Initiate a rapid intravenous infusion of 0.9%0.9\% sodium chloride.
Restores intravascular volume and organ perfusion.
Severe osmotic diuresis leads to profound hypovolemia; fluid resuscitation is the absolute first priority to stabilize blood pressure, reverse shock, and improve renal function.
2
Administer the prescribed intravenous potassium chloride.
Corrects the severe hypokalemia.
The client's potassium is critically low at 3.03.0 mEq/L. Because insulin shifts potassium intracellularly, administering insulin first would worsen hypokalemia and potentially trigger lethal cardiac dysrhythmias.
3
Commence a continuous intravenous infusion of regular insulin.
Halts ketogenesis and lowers blood glucose.
Once intravascular volume is expanding and potassium is safely being replaced, insulin is required to drive glucose into cells, thereby correcting the metabolic acidosis.
4
Evaluate serial blood glucose levels until they reach 250250 mg/dL (13.913.9 mmol/L).
Identifies the threshold for modifying fluid therapy.
As insulin works, glucose drops rapidly. Monitoring identifies the critical inflection point to prevent hypoglycemia while allowing insulin to continue clearing ketones.
5
Incorporate 5%5\% dextrose into the intravenous maintenance fluids.
Prevents rapid shifts in serum osmolality and hypoglycemia.
Adding dextrose provides a continuous substrate for the insulin infusion (which must continue until the anion gap closes) and prevents cerebral edema from a rapid drop in osmolality.

Anahtar Kavram

In severe diabetic ketoacidosis, priority management follows a strict physiological sequence: restore intravascular volume first, correct severe hypokalemia prior to administering insulin (to prevent lethal dysrhythmias), initiate insulin to reverse acidosis, and add dextrose when glucose reaches 250250 mg/dL to prevent hypoglycemia.
Tahmini Süre:2m 0s
Soru 295Soru →

A nurse in the emergency department evaluates the arterial blood gas (ABG) results of a client who intentionally ingested a toxic amount of acetylsalicylic acid 8 hours ago. The client is lethargic, diaphoretic, and breathing deeply at a rate of 34 breaths/minute.

ABG results (on room air):
- pH: 7.42
- PaCO2: 24 mm Hg
- HCO3-: 14 mEq/L
- PaO2: 95 mm Hg

Based on these clinical findings, which conclusion about the client's physiological acid-base status is most accurate?

Cevabı ve açıklamayı göster

Cevap: A mixed acid-base disorder consisting of concurrent primary respiratory alkalosis and primary metabolic acidosis.

Cevap

The client is experiencing a mixed acid-base disorder consisting of concurrent primary respiratory alkalosis and primary metabolic acidosis.
A normal pH (7.35-7.45) accompanied by significantly abnormal PaCO2 and HCO3- values moving in opposite pH directions indicates a mixed acid-base disorder. Physiological compensatory mechanisms never completely normalize the pH. Salicylate toxicity causes two concurrent primary disorders: direct stimulation of the medullary respiratory center (primary respiratory alkalosis) and uncoupling of oxidative phosphorylation, which leads to the accumulation of organic acids (primary metabolic acidosis).

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1
Analyze the pH to determine the primary direction of the acid-base imbalance.
The pH is 7.42, which is within the normal range (7.35-7.45) but leans slightly toward the alkalotic side.
Evaluating the pH is the first step in the standard ABG interpretation process.
2
Analyze the PaCO2 and HCO3- values.
The PaCO2 is 24 mm Hg (indicating respiratory alkalosis) and the HCO3- is 14 mEq/L (indicating metabolic acidosis).
This determines which systems are contributing to the acid-base derangement.
3
Evaluate for physiological compensation versus a mixed acid-base disorder.
Physiological compensatory mechanisms do not completely normalize the pH. A normal pH accompanied by significantly abnormal opposing PaCO2 and HCO3- values indicates a mixed acid-base disorder.
This differentiates a simple compensated disorder from a complex mixed disorder.
4
Correlate the ABG interpretation with the pathophysiology of salicylate toxicity.
Aspirin overdose causes direct medullary stimulation (primary respiratory alkalosis) and uncouples oxidative phosphorylation leading to organic acid accumulation (primary metabolic acidosis).
Clinical context confirms the presence of two concurrent primary disorders, matching the ABG findings.

Anahtar Kavram

Advanced Interpretation of Mixed Acid-Base Disorders in Salicylate Toxicity
Tahmini Süre:1m 30s
Soru 296Soru →

A nurse is caring for a client experiencing a severe asthma exacerbation. The client is highly agitated, visibly using accessory muscles to breathe, and has a respiratory rate of 34 breaths/min34 \text{ breaths/min} and a heart rate of 118 beats/min118 \text{ beats/min}. The most recent arterial blood gas (ABG) results on room air are:

ParameterValue
pH7.367.36
PaCO2\text{PaCO}_244 mm Hg44 \text{ mm Hg}
HCO3−\text{HCO}_3^-24 mEq/L24 \text{ mEq/L}
PaO2\text{PaO}_264 mm Hg64 \text{ mm Hg}

Based on these findings, which of the following is the priority nursing action?

Cevabı ve açıklamayı göster

Cevap: Prepare the client for immediate endotracheal intubation and mechanical ventilation.

Cevap

Prepare the client for immediate endotracheal intubation and mechanical ventilation.
During a severe asthma exacerbation, a client typically hyperventilates, which blows off carbon dioxide and initially leads to respiratory alkalosis (low PaCO2\text{PaCO}_2). If the client remains in severe distress with a high respiratory rate, but the PaCO2\text{PaCO}_2 level has risen to a 'normal' range (35−45 mm Hg35-45 \text{ mm Hg}), this phenomenon is known as pseudonormalization. It indicates severe respiratory muscle fatigue; the client can no longer maintain the extreme work of breathing. This is a classic sign of impending respiratory arrest, making immediate airway securement via intubation the absolute priority.

Adım Adım Çözüm

1
Analyze the client's clinical presentation.
The client is exhibiting severe respiratory distress with a respiratory rate of 34 breaths/min34 \text{ breaths/min}, accessory muscle use, and significant agitation.
Clinical assessment provides the crucial context needed to accurately interpret laboratory values.
2
Evaluate the arterial blood gas (ABG) results in relation to the clinical picture.
The ABG values appear numerically normal, but a severely tachypneic client should have a low PaCO2\text{PaCO}_2 due to hyperventilation (blowing off carbon dioxide).
Identifying the discrepancy between the expected ABG results (respiratory alkalosis) and actual results ('normal' PaCO2\text{PaCO}_2) is essential for detecting physiological decompensation.
3
Determine the physiological cause of the 'normalizing' PaCO2\text{PaCO}_2.
The rising PaCO2\text{PaCO}_2 indicates that the client's respiratory muscles are fatiguing and they can no longer maintain the work of breathing necessary to eliminate carbon dioxide.
Recognizing muscle fatigue leads to the conclusion that respiratory arrest is imminent.
4
Select the priority nursing intervention.
The immediate priority is to collaborate with the healthcare provider to secure the airway via endotracheal intubation and initiate mechanical ventilation.
Airway management takes precedence over all other interventions in a client with impending respiratory failure.

Anahtar Kavram

During a severe asthma exacerbation, a 'normal' or rising PaCO2 in the presence of severe tachypnea and increased work of breathing indicates respiratory muscle fatigue and impending respiratory failure.
Soru 297Soru →

A nurse evaluates a client with severe acute pancreatitis who has become increasingly restless over the last 44 hours. Current vital signs are: blood pressure 88/46 mm Hg88/46 \text{ mm Hg}, heart rate 124 beats/min124 \text{ beats/min}, respiratory rate 28 breaths/min28 \text{ breaths/min}, and temperature 101.8∘F101.8^\circ\text{F} (38.8∘C38.8^\circ\text{C}). The nurse suspects the client is manifesting early distributive shock secondary to systemic inflammatory response syndrome (SIRS). Which of the following clinical and diagnostic findings are consistent with this specific early physiological state? Select all that apply.

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Cevap: Bounding peripheral pulses; Central venous pressure (CVP) of 2 mm Hg2 \text{ mm Hg}; Arterial blood gas (ABG) showing a pHpH of 7.497.49, PaCO2PaCO_2 of 30 mm Hg30 \text{ mm Hg}, and HCO3−HCO_3^- of 22 mEq/L22 \text{ mEq/L}

Cevap

The correct findings for early distributive shock are bounding peripheral pulses, a low Central Venous Pressure (CVP), and respiratory alkalosis on an Arterial Blood Gas (ABG) analysis.
Early distributive (septic or SIRS) shock represents a hyperdynamic, 'warm' state characterized by massive systemic vasodilation and a compensatory increase in cardiac output. This physiological adaptation results in bounding pulses, a low central venous pressure due to relative hypovolemia (expanded vascular space), and tachypnea that leads to primary respiratory alkalosis (pH>7.45pH > 7.45, PaCO2<35 mm HgPaCO_2 < 35 \text{ mm Hg}).

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1
Analyze the pathophysiological phase based on the scenario.
The client is in the 'early' phase of distributive shock (SIRS/sepsis).
It is critical to distinguish early (hyperdynamic or 'warm') shock from late (hypodynamic or 'cold') shock, as their clinical presentations are physiologically opposite.
2
Evaluate hemodynamic and peripheral perfusion signs.
Identify that massive vasodilation causes relative hypovolemia (low CVP), widened pulse pressure, and a compensatory high cardiac output leading to bounding pulses and warm skin.
Unlike hypovolemic or cardiogenic shock, early distributive shock is characterized by a failure of vascular tone rather than a primary pump or volume failure.
3
Analyze the acid-base disturbances associated with the phase.
Identify that the initial tachypnea (28 breaths/min28 \text{ breaths/min}) will cause carbon dioxide washout, leading to respiratory alkalosis (pH>7.45pH > 7.45, PaCO2<35 mm HgPaCO_2 < 35 \text{ mm Hg}).
Metabolic acidosis (lactic acidosis) does not typically accumulate to pathological levels until the shock progresses to the late, decompensated phase where tissue oxygen extraction completely fails.

Anahtar Kavram

Early hyperdynamic phase of distributive shock presents with signs of vasodilation (low CVP, bounding pulses, warm skin) and respiratory alkalosis, distinguishing it from late or hypovolemic shock states.
Soru 298Soru →

A client is being treated in the emergency department for a severe asthma exacerbation. Upon admission, the client was highly anxious, tachypneic, and audibly wheezing. Initial arterial blood gas (ABG) results were: pH 7.52, PaCO2 28 mm Hg, HCO3- 24 mEq/L, and PaO2 68 mm Hg. Two hours later, the nurse notes that the client has become lethargic and the respiratory effort is shallow. A repeat ABG reveals: pH 7.36, PaCO2 44 mm Hg, HCO3- 24 mEq/L, and PaO2 58 mm Hg. Which of the following is the priority nursing action?

Cevabı ve açıklamayı göster

Cevap: Prepare the client for immediate endotracheal intubation and mechanical ventilation.

Cevap

Prepare the client for immediate endotracheal intubation and mechanical ventilation.
In the early stages of an asthma exacerbation, clients hyperventilate in an attempt to increase oxygenation, resulting in a low PaCO2 (respiratory alkalosis). As the client becomes fatigued, they can no longer maintain this increased respiratory effort. The breathing becomes shallow, and CO2 begins to be retained. A PaCO2 that rises from a low level to a 'normal' level (35-45 mm Hg), accompanied by clinical signs of deterioration such as lethargy, is a classic warning sign of impending respiratory failure. The priority action is to prepare for immediate intubation and mechanical ventilation to secure the airway and ensure adequate gas exchange.

Adım Adım Çözüm

1
Analyze the initial presentation and ABGs.
The client initially presented with hyperventilation (tachypnea), leading to respiratory alkalosis (pH 7.52, low PaCO2 28), which is a typical early physiological adaptation to hypoxemia in an asthma attack.
Establishing the baseline helps identify trends in the client's respiratory status.
2
Evaluate the current clinical signs and repeat ABGs.
The client is now lethargic with shallow breathing. The ABG shows a 'normal' pH (7.36) and PaCO2 (44), but worsening hypoxemia (PaO2 58).
Clinical assessment must always be correlated with laboratory values to determine the client's actual condition.
3
Synthesize the findings to determine the pathophysiological state.
The increase in PaCO2 from 28 to 44 mm Hg, combined with lethargy, means the client is no longer able to maintain the compensatory hyperventilation due to respiratory muscle fatigue.
A normalizing PaCO2 in a previously hyperventilating asthmatic is an ominous sign of impending respiratory failure.
4
Determine the highest priority intervention.
The client requires immediate airway protection and mechanical ventilation to prevent respiratory arrest.
Airway and breathing are the highest priorities in the ABCs of resuscitation.

Anahtar Kavram

Impending Respiratory Failure in Asthma
Tahmini Süre:1m 30s
Soru 299Soru →

Following a complex cystoscopy procedure, a client develops a systemic infection. While performing a reassessment, the nurse notes several changes in the client's clinical presentation. Which assessment findings should alert the nurse that the client is experiencing the early, hyperdynamic phase of septic shock? Select all that apply.

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Cevap: Warm, flushed skin; Heart rate of 118 beats/min118\text{ beats/min}; Respiratory rate of 28 breaths/min28\text{ breaths/min}

Cevap

The correct findings indicating early (hyperdynamic) septic shock are warm, flushed skin; a heart rate of 118 beats/min118\text{ beats/min}; and a respiratory rate of 28 breaths/min28\text{ breaths/min}.
During the early (hyperdynamic) phase of septic shock, inflammatory endotoxins cause massive systemic vasodilation. This lack of vascular resistance presents clinically as warm, flushed skin and a widened pulse pressure. To compensate for the loss of vascular tone and maintain tissue perfusion, the sympathetic nervous system initiates an increase in heart rate (tachycardia) and respiratory rate (tachypnea). Therefore, hyperthermia or flushed skin, a rapid heart rate, and increased respirations are classic early indicators that differentiate early septic shock from other shock states.

Adım Adım Çözüm

1
Identify the phase of shock described in the clinical scenario.
The scenario specifies the 'early, hyperdynamic phase' of septic shock.
Different phases of shock present with distinct physiological signs, requiring precise recognition for proper intervention.
2
Recall the physiological mechanisms that characterize the hyperdynamic phase of septic shock.
This phase is characterized by the release of inflammatory mediators causing massive systemic vasodilation and a compensatory increase in cardiac output and respiratory effort.
Understanding the underlying pathophysiology allows you to predict the resulting clinical signs.
3
Evaluate each option to determine if it aligns with vasodilation and early compensatory mechanisms.
Vasodilation causes warm, flushed skin. Compensatory mechanisms cause an elevated heart rate (tachycardia) and elevated respiratory rate (tachypnea).
Matching physiological principles directly to assessment data distinguishes correct early indicators from late signs or distractors.

Anahtar Kavram

Presentation of Early (Hyperdynamic) Septic Shock
Soru 300Soru →

An adult client is admitted to the surgical step-down unit following a motor vehicle collision involving blunt abdominal trauma. During the initial shift assessment, the nurse notes the client has become increasingly restless and diaphoretic, and is reporting new-onset pain in the left shoulder. The client's vital signs are heart rate 118118 bpm, blood pressure 98/6298/62 mmHg, and respiratory rate 2424/min. Which of the following is the priority nursing action to reduce the client's risk for physiological deterioration?

Cevabı ve açıklamayı göster

Cevap: Initiate large-bore intravenous access and prepare for rapid isotonic fluid volume expansion.

Cevap

The priority action is to initiate large-bore intravenous access and prepare for rapid isotonic fluid volume expansion to address impending hypovolemic shock.
The correct answer addresses the immediate life-threatening complication of hypovolemic shock resulting from internal bleeding. The client is demonstrating Kehr's sign (left shoulder pain caused by diaphragmatic irritation from intraperitoneal blood, classically seen in splenic rupture) alongside compensatory shock symptoms (restlessness, diaphoresis, tachycardia, and hypotension). Establishing large-bore IV access to facilitate rapid fluid and blood replacement is the priority action to maintain tissue perfusion and reduce the risk of mortality.

Adım Adım Çözüm

1
Analyze the client's history and presenting clinical symptoms.
The client has blunt abdominal trauma, new left shoulder pain (Kehr's sign), restlessness, diaphoresis, tachycardia (118118 bpm), and hypotension (98/6298/62 mmHg).
Recognizing patterns in clinical presentation is necessary to identify the potential complication.
2
Correlate the assessment findings with potential pathophysiological processes.
The combination of referred shoulder pain and signs of systemic hypoperfusion indicates a high probability of a ruptured spleen and internal hemorrhage.
Kehr's sign is caused by blood irritating the diaphragm, and the vital sign changes reflect early compensatory mechanisms for hypovolemic shock.
3
Prioritize nursing actions using the Airway, Breathing, Circulation (ABC) framework.
The most immediate life-threatening issue is circulatory collapse from active internal blood loss.
Without adequate intravascular volume, the client will rapidly progress to uncompensated shock and multisystem organ failure.
4
Determine the most appropriate immediate intervention to stabilize circulation.
Securing large-bore IV access for the administration of isotonic fluids or blood products is the highest priority.
Rapid volume resuscitation is required to maintain perfusion while preparing the client for definitive surgical intervention.

Anahtar Kavram

Early Recognition of Hemorrhagic Shock and Spleen Rupture
Tahmini Süre:1m 30s
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Tüm alıştırma soruları — NCLEX-RN | Examkin