Physiological Integrity

1960 soru

Soru 1281Soru →

A nurse is evaluating the arterial blood gas (ABG) results for a client who is experiencing shallow breathing and lethargy following abdominal surgery. The laboratory report displays a pH of 7.267.26, a PaCO2\text{PaCO}_2 of 58 mm Hg58\text{ mm Hg}, and an HCO3−\text{HCO}_3^- of 24 mEq/L24\text{ mEq/L}. Which of the following acid-base imbalances should the nurse identify to initiate appropriate risk-reduction interventions?

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Cevap: Uncompensated respiratory acidosis

Cevap

The correct acid-base imbalance is uncompensated respiratory acidosis.
The client's ABG results demonstrate uncompensated respiratory acidosis because the pH is low (indicating acidemia), the PaCO2\text{PaCO}_2 is elevated (confirming a respiratory cause), and the HCO3−\text{HCO}_3^- is within the normal range (indicating a lack of metabolic compensation).

Adım Adım Çözüm

1
Analyze the pH value.
The pH is 7.267.26, which signifies an acidotic state.
A normal blood pH ranges from 7.357.35 to 7.457.45. A value below 7.357.35 clearly indicates acidosis.
2
Analyze the PaCO2\text{PaCO}_2 value.
The PaCO2\text{PaCO}_2 is elevated at 58 mm Hg58\text{ mm Hg}.
A normal PaCO2\text{PaCO}_2 is 3535 to 45 mm Hg45\text{ mm Hg}. An elevated level reflects hypoventilation and retention of carbon dioxide, confirming the respiratory origin of the acidosis.
3
Analyze the HCO3−\text{HCO}_3^- value.
The HCO3−\text{HCO}_3^- is normal at 24 mEq/L24\text{ mEq/L}.
A normal HCO3−\text{HCO}_3^- is 2222 to 26 mEq/L26\text{ mEq/L}. Because this value has not elevated to buffer the acidic pH, metabolic compensation has not yet occurred.

Anahtar Kavram

Arterial Blood Gas Interpretation
Tahmini Süre:1m 0s
Soru 1282Soru →

A nurse is caring for a client who is receiving a packed red blood cell (PRBC) transfusion. Fifteen minutes after the transfusion begins, the client reports sudden lower back pain, chills, and shortness of breath. In which order should the nurse perform the following actions? Arrange the actions from first to last.

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Cevap

Stop the transfusion, initiate normal saline with new tubing, assess the client, notify the provider and blood bank, and return the blood product to the blood bank.
The absolute priority when a transfusion reaction is suspected is to prevent further exposure to the blood product, maintain venous access, assess the client, and obtain medical intervention. Stopping the transfusion immediately is always the first step, followed by maintaining the intravenous line with 0.9% sodium chloride through entirely new tubing to prevent infusing residual blood. Next, assessing the client provides critical baseline data for the healthcare provider. Notifying the provider and blood bank allows for rapid emergency interventions. Finally, returning the blood bag and tubing allows the facility to analyze the cause of the reaction.

Adım Adım Çözüm

1
Stop the blood transfusion immediately.
Further entry of incompatible blood into the client's circulation is halted.
This is the most critical first step to minimize the severity of the physiological reaction.
2
Disconnect the blood tubing and initiate an infusion of 0.9% sodium chloride using new tubing.
A patent intravenous line is maintained with a neutral fluid.
Intravenous access is critical for administering emergency medications. New tubing must be used so that the blood remaining in the old tubing is not flushed into the client.
3
Assess the client's vital signs and respiratory status.
Baseline data regarding the client's physiological decompensation is gathered.
The nurse needs current, accurate assessment data to communicate the severity of the reaction to the provider.
4
Notify the healthcare provider and the facility blood bank.
The medical team is alerted and emergency orders can be obtained.
The provider will need to prescribe interventions based on the assessment, and the blood bank must initiate their transfusion reaction protocol.
5
Return the blood bag and administration set to the blood bank.
The implicated blood product is secured for laboratory analysis.
The blood bank needs the bag, the remaining blood, and the tubing to test for crossmatching errors or bacterial contamination.

Anahtar Kavram

Management of a suspected hemolytic blood transfusion reaction.
Tahmini Süre:1m 0s
Soru 1283Soru →

A nurse is teaching a client with a left tibial fracture, who is prescribed non-weight-bearing status on the left leg, how to safely stand up from a seated position in a chair using axillary crutches. Arrange the following instructional steps in the correct chronological order.

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Cevap

The correct sequence is: slide forward to the edge of the chair, place both crutches in the hand on the affected side, grasp the armrest with the unaffected hand, push up to a standing position, and finally establish a tripod stance.
When assisting a non-weight-bearing client to stand with crutches, safety and balance depend on proper leverage. The client must first move to the edge of the chair to align their center of gravity over their base of support. By placing both crutches in the hand on the affected side, the strong, unaffected arm is left free to grasp the solid chair armrest. The client then pushes up using the strong arm and strong leg, ensuring no weight is placed on the affected side. Only after achieving a stable standing position should the client move one crutch to the other hand to create the tripod stance for safe ambulation.

Adım Adım Çözüm

1
Analyze the biomechanical requirements for standing from a seated position with one non-weight-bearing extremity.
The client needs to maximize leverage using their strong limbs while protecting the injured leg.
Understanding the core goal ensures each procedural step contributes to safety, stability, and adherence to weight-bearing restrictions.
2
Determine the initial positioning of the client in the chair.
The first essential step is sliding forward to the edge of the chair.
This brings the center of mass closer to the base of support, facilitating upward momentum without straining.
3
Identify the correct placement of the assistive devices and hands before attempting to stand.
Both crutches should be placed in the hand on the affected side, and the unaffected hand should grasp the armrest.
This configuration leaves the strong, unaffected arm free to push off the solid armrest, providing maximum upward leverage.
4
Sequence the remaining actions to achieve a safe, upright position.
The client pushes up using the armrest and strong leg, and only then transfers one crutch to the other side.
Establishing the tripod stance can only safely occur once the client is fully upright and balanced on the strong leg; attempting this while seated is unstable.

Anahtar Kavram

Assistive Devices and Safe Client Transfers
Soru 1284Soru →

While performing a clinical assessment on a client who underwent an open splenectomy four hours ago, the nurse reviews the electronic health record. The baseline vital signs recorded upon arrival to the surgical unit were: blood pressure 128/72 mm Hg, heart rate 76 beats/min, and respiratory rate 16 breaths/min. Which of the following current clinical findings should the nurse interpret as the earliest sign of impending physiological decompensation that necessitates immediate risk mitigation?

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Cevap: A blood pressure of 110/86 mm Hg and a heart rate of 104 beats/min

Cevap

The finding of a blood pressure of 110/86 mm Hg and a heart rate of 104 beats/min provides the earliest indication of impending physiological decompensation.
The correct answer identifies a narrowing pulse pressure and mild tachycardia. The pulse pressure has decreased from 56 mm Hg at baseline to 24 mm Hg, and the heart rate has correspondingly increased. Because the spleen is a highly vascular organ, an open splenectomy carries a significant risk of postoperative hemorrhage. These subtle vital sign changes reflect the body's compensatory mechanisms (sympathetic nervous system activation causing vasoconstriction and tachycardia) in early hypovolemic shock, which requires immediate fluid resuscitation and provider notification to mitigate severe risk.

Adım Adım Çözüm

1
Analyze the baseline vital signs provided in the vignette.
Baseline BP is 128/72 mm Hg (pulse pressure = 56 mm Hg) and HR is 76 beats/min.
Establishing a baseline is essential for identifying physiological trends and deterioration.
2
Evaluate the current blood pressure and heart rate option against the baseline.
The current BP is 110/86 mm Hg, yielding a narrowed pulse pressure of 24 mm Hg, alongside a tachycardic HR of 104 beats/min.
Comparing current values to baseline helps detect the compensatory mechanisms of shock, specifically sympathetic nervous system activation causing peripheral vasoconstriction.
3
Evaluate the other assessment findings for clinical significance.
Urine output of 35 mL/hr is acceptable; low-grade fever is an expected inflammatory response; minor serosanguineous drainage is normal post-operatively.
Discriminating between expected post-operative variances and signs of acute decompensation ensures correct prioritization and risk mitigation.

Anahtar Kavram

Early Recognition of Hypovolemic Shock
Soru 1285Soru →

A nurse is caring for an older adult client who is 1 day post-operative following an abdominal surgery. The provider has prescribed knee-high antiembolism stockings to promote venous return. Which of the following actions should the nurse take?

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Cevap: Measure the circumference of the client's calf at its widest point and the leg length from the heel to the popliteal fold to determine the correct size.

Cevap

The nurse should measure the circumference of the client's calf at its widest point and the leg length from the heel to the popliteal fold to determine the correct stocking size.
To ensure antiembolism stockings provide the correct amount of graduated compression without impeding circulation, the nurse must accurately measure the client's legs. For knee-high stockings, this involves measuring the calf circumference at the widest point and the length from the bottom of the heel to the popliteal fold. Properly sized stockings promote venous return and prevent complications like deep vein thrombosis.

Adım Adım Çözüm

1
Identify the client's risk factors and the provider's prescription.
The client is post-operative and requires knee-high antiembolism stockings to prevent deep vein thrombosis (DVT).
Ensures the correct intervention is being prepared based on the client's specific clinical needs.
2
Determine the necessary preparation steps for applying the stockings safely.
Accurate measurement of the client's legs is required before application.
Stockings that are too tight can restrict arterial blood flow, while those that are too loose will not provide adequate venous compression.
3
Evaluate the remaining options for safety and adherence to the nursing scope of practice.
Delegating initial assessments, ignoring acute confusion, and placing pressure on the popliteal space are all unsafe or incorrect actions.
Eliminating contraindicated interventions isolates the correct, evidence-based nursing action.

Anahtar Kavram

Basic Care and Comfort: Antiembolism Stocking Application and Safety
Soru 1286Soru →

An orthopedic unit nurse is updating the care plan for a geriatric client recovering from a right-sided posterior total hip arthroplasty. The client has developed unexpected episodes of nighttime restlessness and loss of bladder control. Which nursing actions are appropriate to ensure optimal hygiene, comfort, and safety? Select all that apply.

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Cevap: Keep an abduction wedge secured between the client's lower extremities while they are lying flat in bed; Wash the perineal region promptly after voiding accidents and smooth on a protective zinc oxide paste

Cevap

The appropriate actions are to keep an abduction wedge between the client's legs and to wash the perineal region promptly while applying a barrier paste.
The appropriate nursing actions address both the surgical restrictions and the basic care needs of the client. Maintaining an abduction wedge is a crucial standard of care following a posterior hip arthroplasty to prevent the leg from crossing the midline (adduction), which could dislocate the new joint. Additionally, for a client experiencing urinary incontinence, promptly washing the area and applying a zinc oxide paste is a fundamental intervention to protect the skin from moisture-associated damage and preserve tissue integrity.

Adım Adım Çözüm

1
Analyze the client's surgical history (posterior total hip arthroplasty) to identify positioning restrictions.
Determine that the client must avoid hip flexion greater than 90 degrees, adduction, and internal rotation to prevent joint dislocation.
Post-operative anatomical safety dictates specific positional maintenance.
2
Evaluate the new-onset symptoms (urinary incontinence, nighttime restlessness) to determine basic care and safety needs.
Identify that incontinence requires prompt skin care to prevent breakdown, and acute restlessness requires assessment for underlying causes, not immediate restraints or dismissal as normal aging.
Maintaining physiological integrity and a safe care environment requires addressing acute changes appropriately.
3
Review the delegation principles regarding the unit technician (unlicensed assistive personnel).
Recognize that tasks requiring clinical assessment and evaluation cannot be delegated.
Ensuring safe and effective care requires appropriate scope of practice.

Anahtar Kavram

Basic care post-arthroplasty focuses on maintaining joint alignment to prevent dislocation, aggressively managing skin integrity during incontinence, and responding to acute cognitive changes clinically rather than punitively.
Tahmini Süre:1m 30s
Soru 1287Soru →

A nurse is preparing to administer a prescribed intravenous (IV) push medication through a client's peripheral saline lock. Place the following steps in the correct chronological order for safe administration.

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Cevap

The correct sequence is to assess the IV site, scrub the connector port, flush with saline to check patency, administer the medication, and flush with saline again to clear the line.
The correct sequence for administering an IV push medication through an intermittent device is known as the SAS method (Saline, Administer, Saline), preceded by critical safety and hygiene assessments. The nurse must first assess the site for complications. Next, the hub must be scrubbed for infection control. A pre-flush of normal saline follows to ensure the line is patent and ready. The medication is then administered at the correct rate. Finally, a post-flush of normal saline is administered at the same rate as the medication to clear the line and ensure the full dose is delivered.

Adım Adım Çözüm

1
Assess the peripheral IV insertion site for any signs of complications.
The nurse confirms the IV site is free of redness, swelling, pain, or leakage.
Administering medication into a compromised or infiltrated IV site can cause severe tissue damage (extravasation) or fail to deliver the drug systemically.
2
Scrub the needleless connector port of the saline lock with an antimicrobial swab.
The entry point is disinfected.
Rigorous scrubbing of the hub prevents the introduction of microorganisms directly into the client's bloodstream.
3
Attach a syringe and flush the catheter with 0.9% sodium chloride to confirm patency.
The line flushes easily without resistance or patient discomfort.
This confirms the line is patent and clears any existing fluid that might be incompatible with the new medication.
4
Inject the prescribed medication at the recommended rate.
The medication is delivered safely into the bloodstream.
Therapeutic delivery of the drug requires adhering to safe push rates to avoid toxicity or speed shock.
5
Flush the catheter again with 0.9% sodium chloride at the same rate the medication was administered.
The medication is cleared from the tubing and the lock is maintained.
The final flush ensures the entire dose reaches the central circulation and prevents medication from lingering in the catheter, which could cause occlusion.

Anahtar Kavram

Safe administration of IV push medications via a peripheral saline lock utilizing the SAS (Saline-Administer-Saline) method.
Tahmini Süre:1m 0s
Soru 1288Soru →

A nurse is monitoring a client who is receiving a transfusion of packed red blood cells (PRBCs). Fifteen minutes into the transfusion, the client reports sudden lower back pain, chills, and shortness of breath. Arrange the following nursing actions in the correct order of priority, from first to last.

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Cevap

1. Stop the blood transfusion immediately. 2. Disconnect the blood tubing and initiate normal saline with new IV tubing. 3. Assess the client's vital signs and respiratory status. 4. Notify the healthcare provider and the blood bank.
The priority in any acute hemolytic transfusion reaction is to immediately stop the infusion of the incompatible blood product to minimize physiological harm. After stopping the transfusion, the nurse must maintain a patent intravenous line using normal saline and completely new tubing to ensure emergency medications can be given without pushing residual blood into the client. Once the source is removed and access is secured, the nurse performs a rapid assessment of vital signs and respiratory status to determine the severity of the reaction. Finally, the nurse notifies the healthcare provider to obtain treatment prescriptions and the blood bank to initiate a formal transfusion reaction investigation.

Adım Adım Çözüm

1
Identify the clinical signs of an acute hemolytic transfusion reaction.
The client's lower back pain, chills, and shortness of breath indicate a life-threatening reaction.
Recognizing a severe reaction dictates immediate and prioritized nursing interventions.
2
Determine the most critical first action.
Stop the blood transfusion.
Preventing further exposure to the incompatible blood product is the highest priority to minimize harm.
3
Determine the next priority for maintaining vascular access.
Initiate normal saline with new tubing.
A patent IV line is required for emergency interventions, and new tubing prevents residual blood from entering the circulation.
4
Determine the next action for client safety.
Assess vital signs and respiratory status.
The nurse must gather current, objective hemodynamic and respiratory data to communicate to the provider.
5
Determine the final administrative and collaborative action.
Notify the healthcare provider and blood bank.
Medical orders are needed to treat the physiological response, and the blood bank must investigate the root cause of the reaction.

Anahtar Kavram

Prioritization in Acute Transfusion Reactions
Soru 1289Soru →

A critical care nurse is removing a non-tunneled central venous catheter (CVC) from a client's right subclavian vein. Immediately after the catheter is withdrawn, the client gasps, reports sudden severe chest pain, and becomes pale and tachycardic. Suspecting a venous air embolism, arrange the following actions in the exact priority sequence the nurse must perform them to reduce the risk of fatal cardiopulmonary collapse.

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Cevap

The correct priority sequence is to first occlude the insertion site, position the client in the left lateral Trendelenburg position, administer high-flow oxygen, activate the rapid response team, and finally prepare for cardiopulmonary resuscitation.
The physiological principle of managing a venous air embolism requires immediately stopping the source of the air leak, trapping the embolus to prevent pulmonary obstruction, treating the resulting hypoxemia, and then securing advanced medical help.

Adım Adım Çözüm

1
Occlude the catheter insertion site immediately with a sterile, occlusive dressing.
Stops further air entry into the venous system.
Atmospheric pressure is higher than intrathoracic venous pressure during inspiration, drawing air in. Occlusion is the fastest way to stop the leak.
2
Reposition the client into the left lateral Trendelenburg position.
Traps the air embolus in the right side of the heart.
Durant's maneuver utilizes gravity to keep the buoyant air bubble in the right ventricular apex, preventing it from entering the pulmonary outflow tract.
3
Administer 100% high-flow oxygen via a non-rebreather face mask.
Treats hypoxemia and reduces the size of the air embolus.
High-concentration oxygen creates a diffusion gradient that accelerates the reabsorption of nitrogen (the primary component of room air) from the bubble.
4
Activate the hospital's emergency rapid response team.
Mobilizes advanced medical support.
The client requires immediate medical evaluation and potential advanced interventions such as right atrial aspiration or intubation.
5
Initiate continuous hemodynamic monitoring and prepare for cardiopulmonary resuscitation.
Ensures readiness for cardiac arrest.
Venous air embolism can rapidly evolve into obstructive shock and cardiopulmonary arrest, necessitating immediate advanced life support.

Anahtar Kavram

Management of Venous Air Embolism
Soru 1290Soru →

A client in the trauma intensive care unit is receiving a massive transfusion protocol for severe hemorrhagic shock following a pelvic crush injury. After the rapid administration of 8 units of packed red blood cells and 6 units of fresh frozen plasma, the client's continuous electrocardiogram reveals a newly prolonged QT interval of 0.54 seconds. The nurse observes circumoral tingling and muscle fasciculations. Current vital signs include a heart rate of 112 beats per minute, blood pressure of 86/48 mm Hg, and a central venous pressure (CVP) of 9 mm Hg. Which of the following is the priority nursing action?

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Cevap: Administer prescribed intravenous calcium gluconate

Cevap

The correct action is to administer prescribed intravenous calcium gluconate.
The client is exhibiting clear signs of citrate toxicity, a known and dangerous complication of massive blood transfusions. Citrate, used as an anticoagulant in stored blood products, rapidly binds with the client's ionized calcium, precipitating severe hypocalcemia. This lack of ionized calcium manifests as neuromuscular irritability (circumoral tingling, fasciculations), a prolonged QT interval on the ECG, and decreased myocardial contractility (causing hypotension despite an adequate CVP of 9 mm Hg). The priority action is to immediately replace the ionized calcium by administering intravenous calcium gluconate or calcium chloride.

Adım Adım Çözüm

1
Analyze the client's clinical presentation in the context of recent interventions.
The client received massive blood transfusions and is now exhibiting a prolonged QT interval, neuromuscular irritability, and hypotension.
To identify the underlying pathophysiological cause of the sudden deterioration.
2
Correlate the symptoms with potential complications of massive transfusion.
The symptoms are classic indicators of severe hypocalcemia caused by citrate toxicity.
Blood products contain citrate as an anticoagulant, which rapidly binds to the client's circulating ionized calcium.
3
Evaluate the hemodynamic parameters to determine the cause of hypotension.
The CVP is 9 mm Hg, indicating adequate right-sided filling pressures. The hypotension is therefore related to the negative inotropic effect of hypocalcemia, not hypovolemia.
To rule out unresolved hemorrhagic shock and prevent fluid overload.
4
Determine the most appropriate and immediate nursing intervention.
Administering intravenous calcium gluconate will directly correct the life-threatening ionized hypocalcemia.
Replacing ionized calcium restores myocardial contractility, resolves neuromuscular irritability, and shortens the dangerously prolonged QT interval.

Anahtar Kavram

Citrate Toxicity and Hypocalcemia in Massive Transfusions
Soru 1291Soru →

A client with septic shock is receiving a continuous intravenous (IV) infusion of norepinephrine via a single-lumen peripherally inserted central catheter (PICC). The client's blood pressure is 88/54 mmHg88/54 \text{ mmHg} and the mean arterial pressure (MAP) is 65 mmHg65 \text{ mmHg}. The healthcare provider prescribes a stat dose of IV pantoprazole and a continuous IV infusion of regular insulin. The nurse is unable to establish additional peripheral IV access due to severe generalized edema. Which of the following actions should the nurse take? (Select all that apply.)

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Cevap: Initiate the continuous regular insulin infusion by connecting it to the Y-site of the primary norepinephrine infusion tubing.; Contact the healthcare provider to urgently request the placement of a multi-lumen central venous catheter or intraosseous access.; Prioritize the continuous norepinephrine infusion and delay the IV pantoprazole administration until a secondary access line is obtained.

Cevap

The correct actions are to initiate the insulin at the Y-site, request a multi-lumen catheter, and delay the pantoprazole until new access is obtained.
The correct actions prioritize the client's immediate survival (maintaining a MAP of 65 mmHg65 \text{ mmHg}) by never interrupting the norepinephrine infusion. Because regular insulin is compatible with norepinephrine, it can be safely connected to the Y-site. Because pantoprazole is highly incompatible with norepinephrine, it cannot be given through the same line. A new multi-lumen central line or intraosseous access must be requested, and the pantoprazole must be delayed until this safe access is established.

Adım Adım Çözüm

1
Analyze the client's hemodynamic status.
The client is borderline stable with a MAP of 65 mmHg65 \text{ mmHg} solely dependent on a continuous norepinephrine infusion.
Determines the absolute priority of maintaining the vasopressor over all other interventions.
2
Determine medication compatibility for the prescribed drugs.
Regular insulin is compatible with norepinephrine, but pantoprazole is highly incompatible with norepinephrine.
Identifies which medications can be safely administered through the existing single-lumen PICC.
3
Formulate a safe administration plan.
The nurse can Y-site the insulin but must establish new access for the pantoprazole without interrupting the pressor.
Ensures timely medication administration while preventing life-threatening hypotension or IV line precipitation.

Anahtar Kavram

Management of high-alert continuous IV infusions, Y-site compatibility, and prioritization of hemodynamic stability in critically ill clients.
Soru 1292Soru →

A multidisciplinary care team prescribes continuous total parenteral nutrition (TPN) alongside a separate 20%20\% intravenous lipid emulsion for a client recovering from an extensive bowel resection. The client currently has a single-lumen peripherally inserted central catheter (PICC). The primary TPN infusion set includes a standard 0.22-micron0.22\text{-micron} in-line filter. To safely administer both solutions concurrently, which action must the nurse implement?

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Cevap: Attach the lipid emulsion infusion set to the primary TPN line at the port situated below the 0.22-micron0.22\text{-micron} filter.

Cevap

The lipid emulsion must be connected to the primary TPN line at a port distal to (below) the 0.22-micron filter.
Total parenteral nutrition (TPN) solutions require a 0.22-micron filter to trap bacteria and particulate matter. However, intravenous lipid emulsions consist of large fat globules that cannot pass through this microscopic mesh. To administer both solutions concurrently through a single-lumen catheter, the lipid emulsion must be connected to the primary TPN line at a Y-port located below (distal to) the 0.22-micron filter. This technique successfully bypasses the filter for the lipids while ensuring the primary TPN solution remains properly filtered.

Adım Adım Çözüm

1
Identify the physical and molecular properties of the prescribed intravenous solutions.
TPN contains dissolved small molecules (dextrose, amino acids) requiring a 0.22-micron filter to remove bacteria. Lipid emulsions contain large, emulsified fat globules.
Understanding molecular size dictates the specific filtration requirements for safe administration.
2
Determine the appropriate filtration mechanism for lipid emulsions.
Fat globules are significantly larger than 0.22 microns and cannot pass through this microscopic mesh without occluding it.
Forcing lipids through a standard micro-filter will halt the infusion, trigger pump occlusion alarms, and potentially rupture the filter membrane.
3
Select the correct anatomical point of connection on the primary IV tubing.
The lipid emulsion must bypass the 0.22-micron filter but still enter the client's single-lumen catheter concurrently with the continuous TPN.
Connecting the lipid tubing to the Y-port situated below (distal to) the 0.22-micron filter allows both solutions to mix safely just before entering the bloodstream, preserving the integrity of the filter.

Anahtar Kavram

When administering TPN and a lipid emulsion concurrently through a single-lumen central venous catheter, the lipid tubing must be connected below the 0.22-micron TPN filter to prevent complete occlusion of the filter membrane by large fat globules.
Soru 1293Soru →

During hourly rounding on an orthopedic unit, the nurse evaluates a client recovering from a total hip arthroplasty performed 6 hours ago. The client's pain is being managed with a continuous bupivacaine epidural infusion. The client states, 'My lips feel completely numb, and I have a strange metallic taste in my mouth.' The client also mentions a persistent ringing sound in their ears. Which action should the nurse take first?

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Cevap: Stop the continuous epidural infusion pump and alert the anesthesia provider immediately.

Cevap

The nurse must immediately stop the epidural infusion and notify the anesthesia provider.
The client is exhibiting early, classic signs of Local Anesthetic Systemic Toxicity (LAST), which include a metallic taste, tinnitus (ringing in the ears), and perioral numbness. LAST is a life-threatening emergency caused by the systemic absorption of local anesthetics like bupivacaine. The absolute first priority is to stop the administration of the offending agent to prevent the progression to central nervous system excitation (seizures) and subsequent severe cardiovascular depression or arrest.

Adım Adım Çözüm

1
Analyze the client's reported symptoms: perioral numbness, metallic taste, and tinnitus.
Identify these specific findings as early central nervous system (CNS) manifestations of Local Anesthetic Systemic Toxicity (LAST).
Local anesthetics like bupivacaine can inadvertently enter the systemic circulation, leading to severe neurotoxicity before progressing to cardiotoxicity.
2
Determine the most critical immediate intervention for this life-threatening complication.
The source of the toxicity must be eliminated immediately by stopping the pump.
Continuing the infusion will deliver more of the toxic agent into the systemic circulation, causing the complication to rapidly progress to seizures, arrhythmias, and cardiac arrest.

Anahtar Kavram

Recognition and immediate management of Local Anesthetic Systemic Toxicity (LAST)
Soru 1294Soru →

Following a right total hip arthroplasty via a posterior approach, an older adult requires assistance with activities of daily living, elimination, and positioning. To ensure safety and promote comfort during the recovery period, which of the following actions should be incorporated into the client's daily care routine? Select all that apply.

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Cevap: Place an abduction wedge between the client's legs before repositioning them in bed; Ensure a raised toilet seat is installed before the client uses the bathroom for bowel elimination; Position the client on their non-operative side with pillows supporting the affected extremity

Cevap

The correct actions include using an abduction wedge during turning, ensuring a raised toilet seat is installed, and positioning the client on the non-operative side with pillow support.
The correct interventions strictly adhere to posterior hip precautions, which are essential to prevent joint dislocation. These include preventing hip adduction by using an abduction wedge when turning, preventing hip flexion greater than 90 degrees by utilizing a raised toilet seat, and keeping the operative leg in neutral alignment by supporting it with pillows when the client lies on their unaffected side.

Adım Adım Çözüm

1
Analyze the surgical procedure and its implications for basic care.
The client had a total hip arthroplasty via a posterior approach.
Identifying the approach determines the specific positioning precautions needed to prevent dislocation (avoiding flexion >90 degrees, adduction, and internal rotation).
2
Evaluate each intervention against posterior hip precautions.
Interventions that maintain abduction (wedge, pillows) and prevent severe flexion (raised toilet seat) are safe.
These specific mechanical constraints keep the femoral head securely within the acetabulum during healing.
3
Assess distractors for physiological safety and aging principles.
Standard bedpans and leaning forward violate hip precautions, while sudden confusion indicates pathology, not normal aging.
Basic care must integrate safety protocols and accurate assessment of physiological changes in the older adult.

Anahtar Kavram

Total Hip Arthroplasty (Posterior Approach) Basic Care and Positioning Precautions
Soru 1295Soru →

While caring for a client who is receiving intravenous antibiotics for acute pyelonephritis, the nurse monitors for systemic complications. Which assessment finding provides the earliest physiological indication that the client is developing septic shock?

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Cevap: Warm, flushed skin accompanied by a respiratory rate of 28 breaths/minute

Cevap

Warm, flushed skin accompanied by a respiratory rate of 28 breaths/minute.
In the early (hyperdynamic or 'warm') phase of septic shock, the release of inflammatory mediators causes widespread peripheral vasodilation, resulting in warm, flushed skin. Concurrently, the body compensates by increasing the respiratory rate to maximize tissue oxygen delivery, manifesting as early tachypnea. These subtle indicators often precede the classic signs of severe hypotension and cool extremities.

Adım Adım Çözüm

1
Analyze the clinical scenario.
The client has a severe bacterial infection (pyelonephritis) and is at risk for progressing to septic shock.
Identifying the primary risk factor helps anticipate the specific pathophysiological changes associated with that complication.
2
Identify the earliest physiological changes of septic shock.
Early septic shock (hyperdynamic phase) features massive peripheral vasodilation and a compensatory increase in cardiac output and respiratory rate.
Unlike other forms of shock, the initial phase of distributive shock presents with signs of high cardiac output before progressing to hypoperfusion.
3
Evaluate the options against early shock presentation.
Warm/flushed skin and tachypnea align with early vasodilation. Cool extremities indicate late shock. Respiratory acidosis contradicts early hyperventilation. Fever alone is an expected sign of infection.
Comparing all choices ensures the selected finding represents the earliest systemic hemodynamic decompensation.

Anahtar Kavram

Early Septic Shock Recognition
Tahmini Süre:1m 15s
Soru 1296Soru →

During the night shift, a registered nurse is called to the room of an 84-year-old client admitted with community-acquired pneumonia. The client has suddenly become severely agitated, is pulling at the intravenous (IV) tubing, and is attempting to get out of bed unassisted. Which of the following is the most appropriate initial nursing action?

Cevabı ve açıklamayı göster

Cevap: Determine if the client has unmet physiological needs, such as a full bladder or pain, and initiate a bed alarm system.

Cevap

Determine if the client has unmet physiological needs, such as a full bladder or pain, and initiate a bed alarm system.
Sudden agitation in an older adult is highly suggestive of delirium, which is frequently triggered by unmet basic physiological needs such as a full bladder, pain, or hypoxia. The primary role of the nurse in promoting basic care and comfort is to identify and resolve these underlying issues while implementing the least restrictive safety measures possible, such as a bed alarm, to protect the client.

Adım Adım Çözüm

1
Recognize the clinical presentation.
The older adult client is exhibiting sudden severe agitation, confusion, and unsafe behaviors.
Identifying acute changes in mental status is critical, as they often point to underlying, reversible physiological problems rather than chronic cognitive decline.
2
Prioritize nursing interventions based on the least restrictive environment and fundamental care needs.
The nurse plans to assess for reversible causes (e.g., full bladder, hypoxia, pain) and utilize a bed alarm rather than immediately applying physical restraints.
Basic care and comfort principles dictate that addressing fundamental physiological needs and using non-pharmacological, non-restrictive measures must occur before escalating to restraints.

Anahtar Kavram

Basic Care and Comfort: Non-Pharmacological Comfort and Safety in Delirium
Soru 1297Soru →

A client admitted with an acute exacerbation of chronic obstructive pulmonary disease (COPD) has the following arterial blood gas (ABG) results: pH 7.26, PaCO₂ 58 mm Hg, and HCO₃⁻ 24 mEq/L. Based on these physiological values, which acid-base imbalance is the client experiencing?

Cevabı ve açıklamayı göster

Cevap: Uncompensated respiratory acidosis

Cevap

Uncompensated respiratory acidosis
The client is experiencing uncompensated respiratory acidosis. The pH is 7.26, which is below the normal range (7.35-7.45) and indicates acidemia. The PaCO2 is 58 mm Hg, which is above the normal range (35-45 mm Hg) and acts as an acid, identifying the respiratory system as the source of the acidosis. The HCO3- is 24 mEq/L, which falls within the normal range (22-26 mEq/L), indicating that the kidneys have not yet initiated compensation by retaining bicarbonate.

Adım Adım Çözüm

1
Analyze the pH value.
The pH is 7.26 (normal is 7.35 to 7.45). Since it is below 7.35, the primary imbalance is acidosis.
Determining the pH establishes whether the overall state is acidotic or alkalotic.
2
Analyze the PaCO2 value.
The PaCO2 is 58 mm Hg (normal is 35 to 45 mm Hg). Because it is elevated and goes in the opposite direction of the pH, the cause is respiratory.
PaCO2 represents the respiratory component. An elevated PaCO2 causes acidosis.
3
Analyze the HCO3- value.
The HCO3- is 24 mEq/L (normal is 22 to 26 mEq/L). Since it is within the normal range, no metabolic compensation is occurring.
HCO3- represents the metabolic (renal) component. A normal value indicates the kidneys have not compensated for the respiratory problem.

Anahtar Kavram

Arterial Blood Gas (ABG) Interpretation
Soru 1298Soru →

A critical care nurse is monitoring a client admitted with severe acute necrotizing pancreatitis. The client's central venous pressure (CVP) has decreased from 8 mm Hg to 2 mm Hg over the last four hours. Which of the following assessment findings indicate the client is developing hypovolemic shock secondary to massive third-spacing of fluids? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Narrowing of the arterial pulse pressure; Capillary refill time of 5 seconds; Urine output of 30 mL over the previous 2 hours

Cevap

The clinical indicators of developing hypovolemic shock in this client are a narrowing of the arterial pulse pressure, a capillary refill time of 5 seconds, and a urine output of 30 mL over the previous 2 hours.
In severe acute pancreatitis, increased capillary permeability leads to a massive shift of intravascular fluid into the third space (retroperitoneal cavity). This fluid loss reduces circulating blood volume, lowering the central venous pressure. As the body enters hypovolemic shock, compensatory mechanisms engage: peripheral vasoconstriction causes a narrowed arterial pulse pressure and a prolonged capillary refill time (> 3 seconds), while decreased renal perfusion leads to oliguria (urine output < 30 mL/hr).

Adım Adım Çözüm

1
Analyze the pathophysiology of the condition.
Severe acute pancreatitis causes systemic inflammation and increased capillary permeability, leading to massive fluid shifts from the intravascular space into the retroperitoneal space (third-spacing).
Understanding the fluid shift explains the drop in central venous pressure (CVP) and the development of relative hypovolemia.
2
Identify the expected physiological compensation for hypovolemia.
The body activates the sympathetic nervous system to maintain blood pressure by inducing peripheral vasoconstriction and shunting blood to vital organs.
This compensation directly manifests as specific clinical signs in the patient.
3
Evaluate the options against the signs of hypovolemic shock.
Vasoconstriction causes narrowed pulse pressure and prolonged capillary refill. Decreased renal perfusion causes oliguria. Acidosis, not alkalosis, is expected. Neck veins should be flat, and skin should be cool/clammy.
Matching the expected physiological responses to the options isolates the correct findings.

Anahtar Kavram

Hypovolemic Shock and Third-Spacing in Acute Pancreatitis
Soru 1299Soru →

A client is admitted to the intensive care unit with a severe intra-abdominal infection. The nurse is monitoring the client's hemodynamic parameters to assess for the development of early (hyperdynamic) septic shock. Which clinical and hemodynamic findings indicate that the client is experiencing this specific physiological state? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Cardiac index of 4.8 L/min/m²; Widening pulse pressure; Central venous oxygen saturation (ScvO₂) of 84%

Cevap

The findings indicating early (hyperdynamic) septic shock are a cardiac index of 4.8 L/min/m², a widening pulse pressure, and a central venous oxygen saturation (ScvO₂) of 84%.
Early (hyperdynamic) septic shock is characterized by massive vasodilation, resulting in a widened pulse pressure. The body compensates with an increased heart rate and stroke volume, leading to an elevated cardiac index. Despite the high oxygen delivery, cellular mitochondrial dysfunction prevents tissues from extracting oxygen, causing the central venous oxygen saturation (ScvO₂) to be abnormally high.

Adım Adım Çözüm

1
Identify the physiological characteristics of the early (hyperdynamic) phase of septic shock.
Early septic shock is a distributive shock caused by massive systemic vasodilation, increased capillary permeability, and a cellular inability to utilize oxygen.
Understanding the underlying pathophysiology is required to interpret the complex hemodynamic parameters accurately.
2
Evaluate the systemic vascular resistance (SVR) and pulse pressure.
Massive vasodilation causes a profound decrease in SVR and a disproportionate drop in diastolic blood pressure, leading to a widened pulse pressure.
Vasodilation is the hallmark of distributive shock, differentiating it from cardiogenic or hypovolemic shock where SVR is compensatory and elevated.
3
Analyze the compensatory cardiac response.
To compensate for the low SVR and maintain perfusion, the heart rate and stroke volume increase, resulting in an elevated cardiac output (CO) and cardiac index (CI) above the normal 2.5-4.0 L/min/m².
This hyperdynamic state is responsible for the 'warm' presentation of early sepsis, contrasting with the low cardiac output of other shock states.
4
Assess cellular oxygen extraction via ScvO₂.
Due to mitochondrial dysfunction and microvascular shunting, tissues cannot extract oxygen efficiently, causing the ScvO₂ to rise above the normal 65-75%.
This highly specific finding distinguishes early sepsis from conditions with low cardiac output where tissues extract maximum oxygen, causing a low ScvO₂.

Anahtar Kavram

Hemodynamic profile and cellular oxygen utilization in the hyperdynamic phase of septic shock
Soru 1300Soru →

A client is receiving care in the intensive care unit 48 hours after sustaining a complete spinal cord transection at the T3 level. The bedside monitor suddenly alarms. Assessment reveals a blood pressure of 72/40 mm Hg, a heart rate of 42 beats/minute, and profoundly warm, flushed skin below the level of the injury. The client is lethargic but maintains a patent airway. Which intervention should the nurse implement first?

Cevabı ve açıklamayı göster

Cevap: Initiate a prescribed intravenous vasopressor infusion and prepare to administer atropine.

Cevap

Initiate a prescribed intravenous vasopressor infusion and prepare to administer atropine.
A spinal cord injury at or above the T6 level disrupts sympathetic nervous system pathways. This client is exhibiting classic signs of neurogenic shock: unopposed parasympathetic stimulation leading to profound bradycardia, and a loss of vasomotor tone leading to massive vasodilation, which presents as severe hypotension and warm, flushed skin (unlike hypovolemic shock where the skin is cold and clammy). The immediate life-saving priority is to restore vascular tone and cardiac output using vasopressors and atropine.

Adım Adım Çözüm

1
Analyze the client's injury level, time since injury, and vital signs.
The client has a T3 spinal cord injury, is 48 hours post-trauma, and is presenting with profound hypotension, bradycardia, and warm, flushed skin.
Establishing the complete clinical picture is required to differentiate between various types of spinal cord complications.
2
Differentiate between neurogenic shock and autonomic dysreflexia based on hemodynamic parameters.
The presence of severe hypotension and bradycardia indicates neurogenic shock, whereas autonomic dysreflexia would present with severe hypertension.
Both conditions can occur with injuries above T6, but their hemodynamic profiles and required treatments are physiological opposites.
3
Determine the priority pharmacological intervention based on the physiological deficit.
The priority is to restore vascular tone and increase the heart rate using vasopressors and anticholinergics like atropine.
The loss of sympathetic nervous system outflow causes massive vasodilation and unopposed vagal tone, requiring immediate pharmacological circulatory support.

Anahtar Kavram

Early Recognition and Management of Neurogenic Shock
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Physiological Integrity Alıştırma Soruları — NCLEX-RN — Sayfa 65 | Examkin