Physiological Integrity

1960 soru

Soru 461Soru →

A charge nurse is conducting safety rounds on a medical-surgical unit and observes the positioning of several clients. Which client positions increase the risk for physiological complications and require immediate intervention by the nurse? (Select all that apply.)

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Cevap: A client who is 2 hours post-lumbar puncture resting in a semi-Fowler's position.; A client receiving continuous enteral tube feedings lying flat in the supine position while receiving a bed bath.; A client who is 48 hours post-above-the-knee amputation with the residual limb continuously elevated on a pillow.

Cevap

The nurse must intervene for the client in a semi-Fowler's position 2 hours post-lumbar puncture, the client receiving continuous enteral feedings while lying flat, and the client with a residual limb elevated on a pillow 48 hours post-amputation.
The correct options represent positions that place the client at immediate risk for severe complications. A client should remain flat (supine) for several hours after a lumbar puncture to prevent cerebrospinal fluid leakage and spinal headaches; semi-Fowler's is contraindicated. Continuous enteral tube feedings require the head of the bed to be elevated at least 30 degrees to prevent aspiration; the feeding must be paused if the client is laid flat for care. Elevating a residual limb on a pillow is acceptable for the first 24 hours to reduce edema, but doing so 48 hours post-amputation significantly increases the risk of developing an irreversible hip flexion contracture.

Adım Adım Çözüm

1
Evaluate each client's position against established safety protocols and the specific physiological risks associated with their recent procedure or medical condition.
Determine which positions are contraindicated and could lead to severe physiological decompensation.
Client positioning is a critical component of risk reduction. Incorrect positioning can directly cause complications such as aspiration, hemorrhage, or structural deformities.
2
Select only the options where the client's current position is harmful and requires the nurse to take immediate corrective action.
The lumbar puncture, continuous tube feeding, and amputation positions are identified as harmful.
These specific positions increase the risk for cerebrospinal fluid leakage, pulmonary aspiration, and hip flexion contractures, respectively.

Anahtar Kavram

Therapeutic and Post-Procedure Client Positioning for Risk Reduction
Soru 462Soru →

A nurse is evaluating a client four hours after a percutaneous liver biopsy. The client now reports a new onset of dull right shoulder pain. The nurse reviews the client's vital sign trends:

ParameterBaselineCurrent
Blood Pressure128/82128/82 mm Hg112/86112/86 mm Hg
Heart Rate7676 beats/min108108 beats/min
Respiratory Rate1616 breaths/min2424 breaths/min

Which of the following actions should the nurse take first?

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Cevap: Prepare for immediate administration of isotonic intravenous fluids and alert the healthcare provider.

Cevap

The priority action is to prepare for immediate administration of isotonic intravenous fluids and alert the healthcare provider due to signs of internal hemorrhage.
The client is exhibiting classic signs of early hypovolemic shock due to internal hemorrhage following a liver biopsy. The new-onset right shoulder pain is a classic presentation of referred pain from phrenic nerve irritation caused by blood accumulating under the diaphragm. Furthermore, the vital signs demonstrate a compensatory response: a narrowing pulse pressure (dropping from 4646 mm Hg to 2626 mm Hg), tachycardia, and tachypnea. The priority action is to prepare for intravascular volume replacement with isotonic fluids and to alert the healthcare provider immediately for potential surgical or vascular intervention.

Adım Adım Çözüm

1
Analyze the client's clinical presentation and recent procedure history.
The client had a liver biopsy (which carries a high bleeding risk) and now has right shoulder pain, which is referred pain from phrenic nerve irritation due to subdiaphragmatic blood accumulation.
To identify potential complications specifically associated with the invasive procedure.
2
Calculate and compare the pulse pressures from the provided vital signs.
The baseline pulse pressure was 4646 mm Hg (128−82128 - 82). The current pulse pressure has significantly narrowed to 2626 mm Hg (112−86112 - 86).
A narrowing pulse pressure is a highly sensitive, early physiological indicator of hypovolemia and decreased stroke volume before systolic hypotension occurs.
3
Synthesize the vital sign trends with the clinical symptoms.
The combination of a narrowing pulse pressure, tachycardia (108108 beats/min), tachypnea (2424 breaths/min), and referred shoulder pain definitively indicates active internal hemorrhage and early hypovolemic shock.
To determine the underlying failure in physiological adaptation and recognize the shift from stability to decompensation.
4
Determine the priority nursing intervention based on the physiological findings.
The immediate priority is to initiate fluid resuscitation to restore intravascular volume and notify the provider for definitive surgical or vascular intervention.
Hypovolemic shock is a life-threatening emergency requiring prompt circulatory support and escalation of care.

Anahtar Kavram

Early recognition and management of hypovolemic shock secondary to internal hemorrhage
Tahmini Süre:1m 30s
Soru 463Soru →

A nurse is caring for a client who is receiving a continuous intravenous (IV) infusion of heparin for a deep vein thrombosis. The healthcare provider prescribes a scheduled dose of IV vancomycin to treat a concurrent wound infection. The client currently has a single-lumen peripheral IV catheter. When checking a drug reference guide, the nurse notes that heparin and vancomycin are chemically incompatible. Which action is the most appropriate for the nurse to take?

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Cevap: Insert a second peripheral intravenous catheter to administer the vancomycin infusion.

Cevap

The most appropriate action is to insert a second peripheral intravenous catheter to administer the vancomycin.
Vancomycin and heparin are chemically incompatible and cannot be administered through the same IV tubing or Y-site. When a client requires a scheduled intermittent infusion (like vancomycin, which must run for at least 60 minutes) but is also receiving a critical continuous medication with a short half-life (like heparin), the continuous medication cannot be safely paused. Interrupting heparin for an hour would cause the client's activated partial thromboplastin time (aPTT) to drop below the therapeutic range, significantly increasing the risk of thrombus extension. Therefore, the safest and most appropriate nursing action is to establish a second peripheral IV access so both medications can be administered safely and effectively.

Adım Adım Çözüm

1
Identify the incompatibility between the prescribed medications.
Heparin and vancomycin are chemically incompatible and cannot be mixed in the same IV line.
Administering incompatible medications together can cause precipitation, line occlusion, and altered medication efficacy.
2
Evaluate the feasibility of pausing the primary infusion.
Heparin is a critical continuous infusion with a very short half-life used to treat an active deep vein thrombosis.
Interrupting a heparin infusion for 60 minutes or longer to administer vancomycin would cause subtherapeutic anticoagulation levels, risking thrombus extension.
3
Determine the safest alternative route for medication administration.
Establishing a new, separate peripheral IV access is required.
A dedicated line allows both the continuous heparin and the scheduled vancomycin to infuse safely and effectively without interruption or chemical incompatibility.

Anahtar Kavram

Safe parenteral administration of incompatible continuous and intermittent medications.
Soru 464Soru →

A nurse is monitoring a client who is receiving a unit of packed red blood cells. Fifteen minutes into the infusion, the client reports sudden, severe lower back pain and a feeling of impending doom. The client's heart rate is 124 beats per minute, blood pressure is 86/52 mm Hg, and the nurse observes dark, reddish-brown urine in the Foley catheter tubing. Arrange the following nursing actions in the correct priority sequence from first to last.

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Cevap

The correct priority sequence is: 1. Stop the blood transfusion immediately. 2. Disconnect the blood tubing and initiate a normal saline infusion with new tubing. 3. Assess the client's cardiopulmonary status and obtain a complete set of vital signs. 4. Notify the healthcare provider and the blood bank of the reaction. 5. Collect required blood and urine specimens and send them with the blood bag to the laboratory.
Acute hemolytic transfusion reactions are life-threatening emergencies caused by ABO incompatibility. The absolute priority is to stop the offending agent immediately. Next, intravenous access must be maintained with new tubing and 0.9% sodium chloride to prevent hemodynamic collapse and maintain renal perfusion, while carefully avoiding flushing the incompatible blood currently in the old tubing into the client. Only after securing the line and stopping the blood should the nurse assess the client's status, notify the provider for further orders, and finally handle the diagnostic and laboratory follow-up.

Adım Adım Çözüm

1
Identify the clinical presentation as an acute hemolytic transfusion reaction.
Recognize that severe lower back pain, hypotension, and dark urine are signs of hemolysis and impending shock.
Prompt recognition dictates the immediate emergency response to halt the reaction.
2
Prioritize the immediate cessation of the blood product.
The transfusion is stopped.
Removing the source of the ABO incompatibility prevents further destruction of red blood cells.
3
Establish a patent IV line with new tubing and 0.9% sodium chloride.
Intravenous access is secured for fluid resuscitation without administering the remaining incompatible blood.
Normal saline maintains vascular volume and renal perfusion, mitigating hypovolemic shock and acute kidney injury.
4
Evaluate the client's physiological status.
Cardiopulmonary assessment and vital signs are obtained.
Assessment data is necessary to determine the degree of physiological decompensation before contacting the provider.
5
Communicate findings and obtain laboratory confirmation.
The provider and blood bank are notified, and specimens are sent.
Medical interventions are prescribed based on the report, and the lab determines the exact cause of the reaction.

Anahtar Kavram

Management of Acute Hemolytic Transfusion Reaction
Soru 465Soru →

A client who is experiencing frequent seizure activity has a single peripheral intravenous (IV) catheter infusing 5% dextrose in water (D5W) continuously. The healthcare provider prescribes a stat dose of IV phenytoin. Which of the following actions should the nurse perform to safely administer this medication? (Select all that apply)

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Cevap: Pause the primary D5W infusion and flush the IV line with 0.9% sodium chloride before the injection.; Flush the IV catheter with 0.9% sodium chloride immediately after completing the medication injection.; Monitor the client's cardiac rhythm and blood pressure continuously during the medication administration.

Cevap

The correct actions include pausing the D5W infusion to flush with normal saline before the injection, flushing with normal saline after the injection, and continuously monitoring the client's cardiac rhythm and blood pressure.
Phenytoin is physically incompatible with any dextrose-containing solution and requires a dedicated line or thorough flushing with 0.9% sodium chloride before and after administration to prevent precipitation. Due to its potential to cause severe hypotension, bradycardia, and arrhythmias, continuous cardiovascular monitoring is mandatory during administration.

Adım Adım Çözüm

1
Analyze the client's current intravenous setup and the prescribed medication.
The client is receiving 5% dextrose in water (D5W) continuously, and the new prescription is for IV phenytoin.
Identifying the primary IV fluid is essential because phenytoin is highly incompatible with dextrose solutions and will precipitate.
2
Determine the necessary actions to prevent medication precipitation in the IV line.
The nurse must stop the D5W infusion and flush the line with 0.9% sodium chloride before and after giving the phenytoin.
Normal saline is the only compatible fluid for flushing and diluting IV phenytoin.
3
Evaluate the safe administration rate and required monitoring for IV phenytoin.
The medication must be administered slowly, and the client requires continuous cardiac and blood pressure monitoring.
Rapid infusion of phenytoin can lead to severe hypotension and life-threatening cardiac arrhythmias.

Anahtar Kavram

Phenytoin Intravenous Administration Safety and Compatibility
Soru 466Soru →

A 68-year-old client with a history of coronary artery disease and mild chronic obstructive pulmonary disease (COPD) is recovering on the telemetry unit 2 hours after a percutaneous coronary intervention (PCI) via the right femoral artery. The client's baseline vital signs upon admission were blood pressure 138/82 mm Hg and heart rate 72 beats/min. Which assessment finding requires the nurse to intervene immediately?

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Cevap: The client's heart rate has steadily increased to 112 beats/min, and blood pressure is 114/78 mm Hg.

Cevap

The client's heart rate has steadily increased to 112 beats/min, and blood pressure is 114/78 mm Hg.
Following a percutaneous coronary intervention via the femoral artery, the client is at high risk for retroperitoneal hemorrhage. A steadily increasing heart rate combined with a narrowing pulse pressure (from a baseline of 56 mm Hg down to 36 mm Hg) are classic, subtle indicators of early hypovolemic shock. Immediate intervention is required to manage the internal bleeding and prevent cardiovascular collapse.

Adım Adım Çözüm

1
Analyze the client's recent procedure and identify potential high-risk complications associated with it.
The client underwent a PCI via the femoral artery, which carries a significant risk for arterial bleeding and retroperitoneal hemorrhage.
Understanding the specific risks of the procedure guides a focused clinical assessment.
2
Compare the client's current vital signs to their baseline to detect subtle physiological trends.
The heart rate increased significantly from 72 to 112 beats/min, and the pulse pressure narrowed from 56 mm Hg (138-82) to 36 mm Hg (114-78).
Early hypovolemic shock often presents as tachycardia and a narrowing pulse pressure before profound hypotension becomes evident.
3
Evaluate the remaining options to distinguish expected post-procedure findings from critical complications.
Back stiffness from lying flat, normal ABG values, and mild insertion site pain are expected or normal findings, whereas the vital sign changes indicate impending cardiovascular compromise.
Clinical prioritization requires identifying and acting on the most acute, life-threatening issue.

Anahtar Kavram

Early detection of hypovolemic shock secondary to retroperitoneal hemorrhage post-cardiac catheterization.
Tahmini Süre:1m 0s
Soru 467Soru →

A trauma client is admitted to the critical care unit with a radiographically confirmed fracture of the C5 vertebra following a motor vehicle collision. During the ongoing physical assessment, the nurse monitors for systemic complications associated with a high cervical cord injury. Which specific clinical presentation most accurately indicates that the client is developing neurogenic shock?

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Cevap: Bradycardia combined with warm, flushed extremities

Cevap

Bradycardia combined with warm, flushed extremities
Neurogenic shock is a distributive type of shock that occurs after a spinal cord injury, typically at the T6 level or above. The injury disrupts the sympathetic nervous system pathways, resulting in a loss of vasomotor tone and an unopposed parasympathetic (vagal) response. This physiological alteration leads to massive peripheral vasodilation (causing warm, flushed extremities) and an inability of the heart to mount a compensatory tachycardia, resulting in characteristic bradycardia. This presentation is unique among shock states.

Adım Adım Çözüm

1
Identify the underlying pathophysiology of neurogenic shock following a high cervical spine injury.
The injury disrupts the sympathetic nervous system pathways, leaving parasympathetic (vagal) tone unopposed.
High cervical injuries (above T6) sever the communication between the brainstem and the sympathetic ganglia.
2
Correlate the pathophysiology with the expected hemodynamic changes.
The loss of sympathetic tone causes profound vasodilation and prevents the heart from increasing its rate.
Without sympathetic stimulation, blood vessels relax (causing warm, flushed skin and hypotension) and the parasympathetic system slows the heart rate (bradycardia).
3
Differentiate neurogenic shock from other complications associated with trauma.
Eliminate hypovolemic shock (tachycardia/cool skin), spinal shock (purely neurological loss of reflexes), and autonomic dysreflexia (severe hypertension).
Accurate differentiation ensures that life-saving interventions specific to the underlying physiological failure are initiated.

Anahtar Kavram

Hemodynamic presentation and physiological mechanism of neurogenic shock
Soru 468Soru →

An adult client is receiving treatment for acute necrotizing pancreatitis on the medical-surgical unit. Over the past two hours, the client has become increasingly agitated. Current assessment reveals a heart rate of 122 bpm122\text{ bpm}, a blood pressure of 98/80 mm Hg98/80\text{ mm Hg}, and a respiratory rate of 28 breaths/min28\text{ breaths/min}. Arterial blood gas (ABG) results on room air demonstrate a pH of 7.497.49, PaCO2\text{PaCO}_2 of 29 mm Hg29\text{ mm Hg}, PaO2\text{PaO}_2 of 56 mm Hg56\text{ mm Hg}, and HCO3−\text{HCO}_3^- of 23 mEq/L23\text{ mEq/L}. Based on these findings, which action should the nurse implement first?

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Cevap: Apply a non-rebreather mask at 15 L/min15\text{ L/min} and notify the rapid response team

Cevap

The correct priority action is to apply a non-rebreather mask at 15 L/min and notify the rapid response team.
The correct action addresses the most immediate life-threatening issue. The client's ABG reveals severe hypoxemia (PaO2\text{PaO}_2 of 56 mm Hg56\text{ mm Hg}, where normal is 80−100 mm Hg80-100\text{ mm Hg}). The respiratory alkalosis is a secondary compensatory response to the lack of oxygen; as the client breathes faster to obtain oxygen, they blow off excessive CO2\text{CO}_2. Furthermore, the client's vital signs (tachycardia and a very narrow pulse pressure of 18 mm Hg18\text{ mm Hg}) indicate impending shock. Administering high-flow oxygen and escalating care via the rapid response team directly addresses the compromised breathing and prevents imminent respiratory arrest.

Adım Adım Çözüm

1
Analyze the hemodynamic vital signs.
The client has a narrow pulse pressure (18 mm Hg18\text{ mm Hg}) and tachycardia (122 bpm122\text{ bpm}).
These are subtle but critical early indicators of hypovolemic shock caused by fluid third-spacing in severe pancreatitis.
2
Interpret the Arterial Blood Gas (ABG) values.
The pH (7.497.49) and PaCO2\text{PaCO}_2 (29 mm Hg29\text{ mm Hg}) indicate respiratory alkalosis. Crucially, the PaO2\text{PaO}_2 (56 mm Hg56\text{ mm Hg}) reveals severe hypoxemia.
Accurate ABG interpretation is required to distinguish primary hyperventilation from compensatory hyperventilation driven by a lack of oxygen.
3
Synthesize the clinical picture.
The client is experiencing both early shock and acute respiratory compromise (likely early Acute Respiratory Distress Syndrome, a major complication of pancreatitis).
Agitation is a classic sign of hypoxia, and the respiratory alkalosis is a desperate attempt by the body to draw in more oxygen.
4
Prioritize the nursing interventions using the ABCs framework.
Airway and Breathing (correcting the PaO2\text{PaO}_2 of 56 mm Hg56\text{ mm Hg}) take absolute priority over Circulation (fluid administration) or pain management.
Failure to immediately correct severe hypoxemia will rapidly lead to cardiac arrest, regardless of other supportive measures.

Anahtar Kavram

Prioritization of care in multi-system complications of acute pancreatitis (ARDS and hypovolemic shock)
Soru 469Soru →

During a routine assessment, a postoperative client reports sudden and severe surgical site pain, rating it a 9 on a 0-to-10 scale. The client currently has an active transfusion of packed red blood cells (PRBCs) infusing through their only established peripheral intravenous (IV) catheter. The provider has prescribed an as-needed dose of intravenous morphine. Which action represents the safest method for the nurse to deliver this analgesic?

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Cevap: Initiate a separate peripheral venous access site to deliver the medication.

Cevap

Initiate a separate peripheral venous access site to deliver the medication.
The correct action is to initiate a separate peripheral venous access site. The absolute rule of blood transfusion therapy is that no medications may be added to blood products or infused through the same blood administration tubing. Because the client is experiencing severe pain, the medication is urgently needed and should not be delayed. Establishing a second IV line is the only way to deliver the medication promptly and safely.

Adım Adım Çözüm

1
Assess the client's current IV access and the active infusions.
The client has a single IV line actively infusing packed red blood cells (PRBCs).
Identifying existing access points determines if the new medication can be safely administered or if new access is required.
2
Determine compatibility rules for the active infusion.
Blood products are strictly incompatible with all medications and all IV fluids except 0.9% sodium chloride.
Mixing medications with blood can cause fatal hemolysis or precipitation.
3
Evaluate the clinical priority of the prescribed medication.
The client has severe pain (9/10), making the administration of morphine a high priority that cannot wait until the transfusion concludes.
Timely pain management promotes healing and physiological stability.
4
Formulate a safe administration plan.
A new, dedicated peripheral IV line must be inserted.
This allows for the immediate, safe administration of the analgesic without compromising the blood transfusion.

Anahtar Kavram

Blood products must never be mixed with any medications. If a client requires an urgent IV medication during a transfusion and only has one line, a new IV access site must be established.
Soru 470Soru →

A nurse is assessing a client who is two days postoperative following an exploratory laparotomy. The client coughs unexpectedly and reports a sudden "popping" sensation in the abdomen. The nurse inspects the surgical site and observes that a loop of bowel is protruding through the incision. Arrange the following nursing actions in the priority order they should be performed.

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Cevap

The correct priority sequence is to first call for help, then position the client to reduce abdominal tension, cover the exposed organs to prevent necrosis, assess vital signs for shock, and finally notify the surgeon.
When an evisceration occurs, the immediate physiological priority is to prevent further protrusion and protect the exposed organs while securing definitive surgical care. The nurse must first secure assistance without leaving the client, then immediately decrease abdominal pressure by placing the client in a low Fowler's position with knees flexed. Once positioned, the exposed bowel must be covered with sterile, moist dressings to prevent necrosis. Only after the wound is protected and vital signs are obtained to check for shock should the nurse notify the surgeon, providing them with a complete and accurate clinical picture.

Adım Adım Çözüm

1
Call for help and instruct the client to avoid coughing or straining.
Additional staff is summoned to gather sterile supplies while the nurse remains with the unstable client.
The nurse must never leave a client with an evisceration unattended. Straining increases intra-abdominal pressure, which directly worsens the protrusion.
2
Place the client in a low Fowler's position with the knees flexed.
Tension on the abdominal wall is immediately relieved.
Bending the knees and keeping the head of the bed slightly elevated (no more than 20 degrees) relaxes the abdominal muscles, mechanically preventing further evisceration.
3
Cover the protruding viscera with sterile, saline-moistened dressings.
The exposed bowel is protected from the outside environment.
Viscera can dry out quickly, leading to severe tissue necrosis. A sterile, moist environment preserves the tissue and minimizes infection risk.
4
Obtain the client's vital signs to assess for physiological instability.
The client's hemodynamic stability is determined.
Evisceration is a medical emergency that can lead to rapid fluid shifts and hypovolemic shock. Current vital signs are needed before notifying the provider.
5
Notify the surgeon to prepare for emergency surgical intervention.
Definitive surgical care is arranged.
After stabilizing the client and obtaining current assessment data, the surgeon must be informed immediately to take the client back to the operating room.

Anahtar Kavram

Management of Postoperative Evisceration
Soru 471Soru →

Following shift report on a medical-surgical unit, which client condition demands the nurse's immediate evaluation?

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Cevap: A client who underwent a thoracentesis 1 hour ago and demonstrates asymmetric chest wall expansion with a heart rate of 118 bpm

Cevap

The client who underwent a thoracentesis and demonstrates asymmetric chest wall expansion and tachycardia.
The client who recently had a thoracentesis is presenting with asymmetric chest wall expansion and tachycardia, which are hallmark signs of a pneumothorax. This is a life-threatening procedural complication that compromises airway and breathing, requiring immediate medical intervention.

Adım Adım Çözüm

1
Evaluate the clinical status of the client who had a thoracentesis.
Asymmetric chest wall expansion and a heart rate of 118 bpm strongly suggest a pneumothorax, a critical complication of the procedure.
Airway and breathing emergencies must always be prioritized according to the ABCs of nursing.
2
Analyze the arterial blood gas values for the client with chronic obstructive pulmonary disease.
The pH is normal (7.36), while PaCO2PaCO_2 and HCO3−HCO_3^- are elevated, indicating a fully compensated state.
This is an expected baseline finding for chronic respiratory disease and does not require emergency intervention.
3
Assess the situation of the client who is post-lumbar puncture.
The client is experiencing a typical spinal headache exacerbated by an incorrect upright position.
Although the position needs to be corrected to supine to reduce risk of further cerebrospinal fluid leakage, the condition is not immediately life-threatening.
4
Consider the client with deep vein thrombosis receiving heparin.
The client needs prompt assistance to ambulate safely and prevent injury.
This is an important safety measure but takes lower priority compared to acute physiological decompensation.

Anahtar Kavram

Prioritization of Care and Recognition of Post-Procedure Complications
Soru 472Soru →

A nurse is preparing to administer an intravenous (IV) push medication through a client's established peripheral IV saline lock. Place the following nursing actions in the correct chronological sequence.

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Cevap

The correct sequence is to first perform hand hygiene and don gloves, scrub the connector port, aspirate and flush the catheter, inject the medication over the recommended time, and finally flush the catheter again at the same rate.
The correct sequence prioritizes infection control, followed by assessment of catheter patency, safe medication administration, and proper line clearance. Hand hygiene and gloves must come first. Scrubbing the port prevents introducing pathogens. Aspirating and flushing confirms the line is in the vein and patent. The medication is then administered at a safe rate. Finally, the post-medication flush must be administered at the same rate as the medication to avoid rapidly bolusing the drug remaining in the dead space of the catheter.

Adım Adım Çözüm

1
Perform hand hygiene and put on clean gloves.
The nurse is prepared to safely access the IV line while maintaining infection control.
Hand hygiene and barrier protection are critical first steps to prevent healthcare-associated infections.
2
Scrub the needleless connector port with an antiseptic swab.
The access port is disinfected.
Scrubbing the hub removes microorganisms from the surface, preventing them from being pushed into the bloodstream.
3
Aspirate for a blood return and flush the line with 0.9% sodium chloride.
Line patency and proper intravascular placement are confirmed.
Aspiration ensures the catheter is still in the vein, while flushing confirms the line is not occluded and prepares it for the medication.
4
Inject the medication over the prescribed amount of time.
The medication is safely delivered into the client's bloodstream.
Adhering to the recommended IV push rate prevents speed shock, a systemic reaction caused by rapid introduction of a foreign substance into the circulation.
5
Flush the catheter with 0.9% sodium chloride at the same rate used for the medication.
The medication remaining in the dead space of the catheter is cleared into the bloodstream safely.
Flushing too rapidly at the end will push the residual medication into the vein as a rapid bolus, negating the careful timing of the medication administration.

Anahtar Kavram

Safe administration of intravenous (IV) push medications via a peripheral saline lock requires strict aseptic technique, verification of line patency, and appropriately timed flushing techniques.
Soru 473Soru →

A nurse is caring for a client who experienced massive hematemesis secondary to a bleeding peptic ulcer. The bleeding has been medically managed, but the nurse is performing frequent assessments to monitor for hypovolemic shock. Which assessment finding indicates the client is currently in the initial compensatory stage of shock?

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Cevap: A narrowing pulse pressure with a slight increase in diastolic blood pressure

Cevap

A narrowing pulse pressure with a slight increase in diastolic blood pressure is the correct early indicator.
During the initial compensatory stage of hypovolemic shock, the body attempts to maintain cardiac output and tissue perfusion through sympathetic nervous system activation. This leads to peripheral vasoconstriction, which elevates the diastolic blood pressure while the systolic pressure remains stable, resulting in a narrowed pulse pressure. Recognizing this subtle change allows for early intervention before hemodynamic collapse occurs.

Adım Adım Çözüm

1
Recall the sequential stages of shock and their associated clinical manifestations.
The stages are compensatory (early), progressive (intermediate), and irreversible (late). The compensatory stage relies on neural, hormonal, and biochemical mechanisms to maintain perfusion.
Identifying the physiological adaptations that occur in each stage is necessary to pinpoint early assessment findings.
2
Analyze how the body dynamically compensates for acute fluid volume loss in the early stage.
The sympathetic nervous system triggers widespread vasoconstriction. This selectively raises the diastolic pressure while the systolic pressure remains relatively normal, effectively narrowing the pulse pressure.
This specific physiological adaptation helps maintain blood flow to vital organs during initial volume depletion before profound hypotension occurs.
3
Evaluate and eliminate the incorrect options based on the expected timeline of shock progression.
Hypotension and unresponsiveness are identified as late (progressive) signs, while respiratory acidosis contradicts the early compensatory hyperventilation (which causes respiratory alkalosis).
Systematically ruling out late signs and opposing acid-base imbalances confirms the correct early indicator.

Anahtar Kavram

Pathophysiology of Shock and Compensatory Mechanisms
Tahmini Süre:1m 0s
Soru 474Soru →

A nurse is assessing a client who has just been transferred to the medical-surgical unit following a flexible bronchoscopy with a tissue biopsy. Which of the following assessment findings indicate a potential complication that requires immediate intervention? Select all that apply.

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Cevap: High-pitched inspiratory stridor; Asymmetrical chest wall expansion; Coughing up frank red blood

Cevap

The findings that require immediate intervention are high-pitched inspiratory stridor, asymmetrical chest wall expansion, and coughing up frank red blood.
The correct findings represent life-threatening complications of a bronchoscopy and biopsy. High-pitched inspiratory stridor indicates laryngospasm or airway edema, which is an airway emergency. Asymmetrical chest expansion strongly suggests a pneumothorax, a complication that can occur if the pleura is accidentally punctured during the biopsy. Coughing up frank, bright red blood indicates active, severe hemorrhage from the biopsy site. All of these require immediate intervention to secure the client's airway, breathing, and circulation.

Adım Adım Çözüm

1
Identify the procedure performed and its inherent clinical risks.
The client underwent a flexible bronchoscopy with a tissue biopsy.
Recognizing the procedure helps anticipate specific physiological complications such as airway compromise, pneumothorax, and hemorrhage.
2
Differentiate between expected post-procedure findings and signs of physiological decompensation.
An absent gag reflex and small amounts of blood-tinged sputum are expected. Stridor, asymmetrical chest expansion, and coughing up frank blood are abnormal.
Effective risk reduction requires the nurse to recognize subtle and overt indicators of impending emergencies.
3
Select the assessment findings that represent potential emergencies requiring immediate action.
Stridor (indicating airway obstruction), asymmetrical chest expansion (indicating pneumothorax), and frank red blood (indicating hemorrhage) are selected.
These findings directly compromise the airway, breathing, or circulation (ABCs) and take highest priority.

Anahtar Kavram

Reduction of Risk Potential: Post-Procedure Complications
Soru 475Soru →

A healthcare provider prescribes a continuous intravenous (IV) infusion of lidocaine at 2 mg/min2\text{ mg/min} for a client exhibiting ventricular tachycardia. The pharmacy delivers an infusion bag containing 2 g2\text{ g} of lidocaine mixed in 500 mL500\text{ mL} of 5%5\% dextrose in water (D5W\text{D}_5\text{W}). What is the infusion rate in mL/hr\text{mL/hr} that should be programmed into the IV pump? (Record your answer as a whole number.)

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Cevap: 30

Cevap

30
The correct infusion rate is calculated by standardizing the units of time and mass, determining the hourly milligram requirement (120 mg/hr120\text{ mg/hr}), and then using dimensional analysis or the desired-over-have method to find the volume needed for that specific dose (30 mL/hr30\text{ mL/hr}).

Adım Adım Çözüm

1
Convert the prescribed rate from milligrams per minute to milligrams per hour.
2 mg/min×60 min/hr=120 mg/hr2\text{ mg/min} \times 60\text{ min/hr} = 120\text{ mg/hr}
The final requested unit is in hours (mL/hr), so the target dose must reflect an hourly rate.
2
Convert the total available medication from grams to milligrams.
2 g=2000 mg2\text{ g} = 2000\text{ mg}
To ensure correct ratio calculation, the units of the prescribed dose and the available medication must match.
3
Calculate the volume required to deliver the hourly dose.
120 mg/hr2000 mg×500 mL=30 mL/hr\frac{120\text{ mg/hr}}{2000\text{ mg}} \times 500\text{ mL} = 30\text{ mL/hr}
Using the standard formula (Desired Dose / Available Dose) \times Volume determines the correct pump setting in mL/hr.

Anahtar Kavram

Intravenous medication dosage calculation requiring unit conversion for both time and mass.
Soru 476Soru →

An adult client is recovering on the surgical unit 4 hours after a laparoscopic appendectomy. The client becomes increasingly restless and repeatedly asks for water due to severe thirst. The nurse reviews the client's vital sign trends over the past hour:

Parameter1 Hour AgoCurrent
Heart Rate82 bpm110 bpm
Blood Pressure128/72 mm Hg114/86 mm Hg
Respiratory Rate14 breaths/min24 breaths/min
Oxygen Saturation98% on room air96% on room air

Which of the following is the priority nursing action to reduce the risk of further physiological deterioration?

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Cevap: Notify the healthcare provider immediately and prepare to administer an intravenous fluid bolus

Cevap

Notify the healthcare provider immediately and prepare to administer an intravenous fluid bolus.
The correct answer directly addresses the underlying life-threatening complication. The client's clinical presentation—narrowing pulse pressure, tachycardia, tachypnea, new-onset restlessness, and severe thirst—indicates the compensatory stage of hypovolemic (hemorrhagic) shock. Prompt medical notification and volume replacement are the highest priorities to reduce the risk of further physiological decompensation.

Adım Adım Çözüm

1
Analyze the vital sign trends to calculate the pulse pressure.
The pulse pressure has narrowed significantly from 56 mm Hg (128 - 72) to 28 mm Hg (114 - 86).
A narrowing pulse pressure is a hallmark early indicator of compensatory shock as the body attempts to maintain cardiac output.
2
Correlate the numerical vital signs with the client's physical assessment findings.
The narrowed pulse pressure combined with tachycardia (110 bpm), tachypnea (24 breaths/min), restlessness, and severe thirst confirms early hypovolemic shock.
Restlessness indicates early cerebral hypoxia, and thirst is a strong physiological compensatory response to fluid volume deficit.
3
Determine the priority nursing intervention based on the clinical deterioration.
The nurse must alert the medical team and prepare for immediate fluid resuscitation.
Hemorrhagic shock is a life-threatening complication that requires immediate medical intervention and intravenous volume replacement to prevent irreversible organ damage.

Anahtar Kavram

Early Recognition and Management of Hypovolemic Shock
Soru 477Soru →

A nurse is caring for a client with acute decompensated heart failure who is experiencing severe dyspnea and pulmonary edema. The healthcare provider prescribes furosemide 80 mg80\text{ mg} intravenous (IV) push STAT. The medication is supplied in a vial containing 10 mg/mL10\text{ mg/mL}. The client currently has a single peripheral IV line infusing a continuous amiodarone drip. Which of the following actions is most appropriate for the nurse to take?

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Cevap: Establish a new peripheral IV access site and administer 8 mL8\text{ mL} of the medication over a duration of 4 minutes.

Cevap

Establish a new peripheral IV access site and administer 8 mL8\text{ mL} of the medication over a duration of 4 minutes.
The correct action comprehensively addresses all nursing safety principles for this scenario. First, the dose is correctly calculated as 8 mL8\text{ mL} (80 mg10 mg/mL=8 mL\frac{80\text{ mg}}{10\text{ mg/mL}} = 8\text{ mL}). Second, to prevent ototoxicity, high-dose IV furosemide must be administered no faster than 20 mg/min20\text{ mg/min}, which requires a 4-minute push for an 80 mg80\text{ mg} dose. Third, because furosemide and amiodarone are physically incompatible and will form a precipitate, establishing a separate, secondary IV access is mandatory to ensure client safety.

Adım Adım Çözüm

1
Calculate the required volume of medication to draw up.
Using the formula DesiredHave×Volume\frac{\text{Desired}}{\text{Have}} \times \text{Volume}, calculate 80 mg10 mg×1 mL=8 mL\frac{80\text{ mg}}{10\text{ mg}} \times 1\text{ mL} = 8\text{ mL}.
Accurate dosage calculation is essential to ensure the client receives the therapeutic dose without risking toxicity.
2
Determine the safe IV push rate for the medication.
Furosemide is typically administered at a maximum rate of 20 mg/min20\text{ mg/min}. Therefore, an 80 mg80\text{ mg} dose must be pushed over at least 4 minutes.
Administering high doses of IV furosemide too rapidly greatly increases the risk of permanent ototoxicity (tinnitus and hearing loss).
3
Evaluate the physical compatibility of the prescribed medication with the existing continuous IV infusion.
Identify that furosemide is incompatible with amiodarone, meaning they cannot be infused through the same IV tubing.
Administering incompatible medications together causes precipitate formation, which blocks the IV line and can cause a fatal embolism.
4
Formulate a safe and appropriate administration plan.
Decide to start a second, separate peripheral IV line to administer the furosemide independently, and plan to personally assess the client's respiratory status afterward.
This comprehensively addresses all safety parameters: accurate dosing, appropriate speed, chemical compatibility, and proper scope of nursing practice.

Anahtar Kavram

Safe administration of high-alert parenteral medications
Soru 478Soru →

A client is receiving intravenous antibiotics for acute pyelonephritis. During hourly rounding, the client appears restless and mildly confused. The physical examination reveals warm, flushed skin. Current vital signs demonstrate a blood pressure of 104/62 mm Hg104/62 \text{ mm Hg}, a heart rate of 114 bpm114 \text{ bpm}, a respiratory rate of 28 breaths/min28 \text{ breaths/min}, and a temperature of 38.8∘C38.8^\circ\text{C} (101.8∘F101.8^\circ\text{F}). Based on this early stage of physiological decompensation, which of the following arterial blood gas (ABG) profiles is most likely present?

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Cevap: pH=7.48\text{pH} = 7.48, PaCO2=28 mm Hg\text{PaCO}_2 = 28 \text{ mm Hg}, HCO3−=23 mEq/L\text{HCO}_3^- = 23 \text{ mEq/L}

Cevap

The profile demonstrating uncompensated respiratory alkalosis: pH=7.48\text{pH} = 7.48, PaCO2=28 mm Hg\text{PaCO}_2 = 28 \text{ mm Hg}, HCO3−=23 mEq/L\text{HCO}_3^- = 23 \text{ mEq/L}.
The correct answer demonstrates uncompensated respiratory alkalosis (pH>7.45\text{pH} > 7.45, PaCO2<35 mm Hg\text{PaCO}_2 < 35 \text{ mm Hg}, normal HCO3−\text{HCO}_3^-). In the early (warm) phase of septic shock, inflammatory mediators and endotoxins stimulate the respiratory center in the medulla, leading to an increased respiratory rate (tachypnea). This hyperventilation causes the client to rapidly exhale carbon dioxide (CO2\text{CO}_2), resulting in a primary respiratory alkalosis. The client's documented respiratory rate of 28 breaths/min28 \text{ breaths/min} aligns with this expected physiological shift.

Adım Adım Çözüm

1
Analyze the client's clinical presentation and vital sign trends.
The client exhibits fever, tachycardia, tachypnea (28 breaths/min28 \text{ breaths/min}), warm/flushed skin, and altered mental status.
These findings represent the classic manifestations of the early (hyperdynamic or 'warm') phase of systemic inflammatory response syndrome (SIRS) and early septic shock.
2
Determine the physiological effect of the altered vital signs on acid-base balance.
A respiratory rate of 28 breaths/min28 \text{ breaths/min} causes the excessive elimination of carbon dioxide (CO2\text{CO}_2), which is an acidic compound.
Hyperventilation in early sepsis is a compensatory and inflammatory response that directly lowers PaCO2\text{PaCO}_2 levels in the blood.
3
Match the physiological effect to the corresponding ABG profile.
A low PaCO2\text{PaCO}_2 (<35 mm Hg< 35 \text{ mm Hg}) leads to an elevated pH (>7.45> 7.45), classifying the imbalance as respiratory alkalosis.
Accurately identifying the acid-base disturbance helps the nurse confirm the client's current stage of physiological decompensation and prioritize interventions.

Anahtar Kavram

Early septic shock triggers systemic inflammation that stimulates the respiratory center, leading to hyperventilation and a resulting respiratory alkalosis.
Tahmini Süre:1m 30s
Soru 479Soru →

A client receiving intravenous fluids via a central venous catheter suddenly develops severe shortness of breath, chest pain, and lightheadedness. The nurse notes that the catheter's injection cap has fallen off and the lumen is open to room air. Suspecting an air embolism, in what order should the nurse perform the following actions to reduce the risk of further physiological compromise? Arrange the interventions from first to last.

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Cevap

The correct sequence is to first clamp the central venous catheter, then place the client in the left lateral Trendelenburg position, administer 100% oxygen, activate the rapid response team, and finally obtain a complete set of vital signs.
The priority in any acute complication is to stop the cause and prevent imminent physiological collapse. Clamping the line directly stops the air from entering. The left lateral Trendelenburg position immediately mitigates the mechanical threat of the air bubble. High-flow oxygen is then applied to treat hypoxia and shrink the bubble. Only after these immediate stabilization actions should the nurse take the time to activate the rapid response team and collect vital signs.

Adım Adım Çözüm

1
Clamp the central venous catheter.
Stops additional air from entering the vascular space.
When an air embolism is suspected due to an open central line, eliminating the source of the embolism is the absolute first priority to prevent worsening of the condition.
2
Place the client in the left lateral Trendelenburg position.
Traps the air bubble in the right atrium.
This specific position uses gravity to keep the air bubble away from the pulmonary outflow tract, reducing the risk of a fatal pulmonary artery occlusion.
3
Administer 100% oxygen via a non-rebreather mask.
Treats hypoxemia and aids in gas reabsorption.
A high concentration of oxygen creates a diffusion gradient that helps reabsorb the nitrogen present in the air bubble, shrinking its size while addressing the client's severe shortness of breath.
4
Activate the rapid response team.
Summons advanced medical support.
Air embolism is a life-threatening emergency. Once initial mitigation steps are complete, additional resources and a healthcare provider must be mobilized immediately.
5
Obtain a complete set of vital signs.
Provides objective data on the client's hemodynamic status.
Assessment follows the immediate life-saving actions. Continuous monitoring of vital signs guides further medical interventions once the rapid response team arrives.

Anahtar Kavram

In the event of a suspected air embolism from a central venous catheter, the nurse's immediate priorities are to stop further air entry, position the client to trap the air, and provide oxygenation before seeking further assistance.
Soru 480Soru →

A client is admitted to the emergency department with a diagnosis of severe diabetic ketoacidosis (DKA). The client is lethargic, has a respiratory rate of 3232 breaths/minute with deep, rapid breathing, and a blood glucose level of 680680 mg/dL (37.737.7 mmol/L). Arrange the following nursing actions in the correct priority order of implementation.

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Cevap

The correct sequence is: 1. Assess airway and respiratory status, 2. Administer rapid intravenous fluid resuscitation with 0.9% sodium chloride, 3. Verify the client's initial serum potassium level, 4. Initiate a continuous intravenous infusion of regular insulin, 5. Add 5% dextrose to the maintenance intravenous fluids.
The correct sequence of actions for managing a client with Diabetic Ketoacidosis (DKA) follows the ABCs and standard emergency protocols. First, the nurse must assess the airway and respiratory status, as the client is lethargic and experiencing Kussmaul respirations. Second, reversing severe dehydration with isotonic fluids (0.9% sodium chloride) is the most critical physiological priority to prevent hypovolemic shock. Third, the nurse must verify the serum potassium level; insulin drives potassium into the cells, so administering insulin to a hypokalemic patient can cause lethal cardiac dysrhythmias. Fourth, a continuous regular insulin infusion is initiated to resolve the ketoacidosis. Finally, when the blood glucose approaches 250 mg/dL, 5% dextrose must be added to the intravenous fluids to prevent hypoglycemia and cerebral edema.

Adım Adım Çözüm

1
Assess the client's airway patency and respiratory status.
Airway is secured and Kussmaul respirations are closely monitored.
According to the ABC (Airway, Breathing, Circulation) prioritization framework, securing the airway is always the initial action for a compromised or lethargic client.
2
Administer rapid intravenous fluid resuscitation with 0.9% sodium chloride.
Intravascular volume is expanded and tissue perfusion is restored.
Severe dehydration is the most immediate life-threatening metabolic issue in DKA; isotonic normal saline rapidly restores circulating volume.
3
Verify the client's initial serum potassium level.
Baseline potassium is confirmed to prevent severe hypokalemia.
Insulin shifts potassium into the intracellular space. The nurse must ensure the potassium level is adequate (typically >3.3 mEq/L) before starting insulin to avoid fatal dysrhythmias.
4
Initiate a continuous intravenous infusion of regular insulin.
Blood glucose levels begin to steadily decrease and ketone production stops.
Regular insulin acts to reverse the underlying ketoacidosis and cellular starvation.
5
Add 5% dextrose to the maintenance intravenous fluids.
Hypoglycemia and potential cerebral edema are prevented.
Once the blood glucose level drops to approximately 250 mg/dL, dextrose must be added to prevent a rapid hypoglycemic shift while insulin continues to be administered to clear ketones.

Anahtar Kavram

Prioritization and acute management of Diabetic Ketoacidosis (DKA)
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Physiological Integrity Alıştırma Soruları — NCLEX-RN — Sayfa 24 | Examkin