Physiological Integrity

1960 soru

Soru 521Soru →

During a routine shift, a nurse is assigned to a client who requires both nutritional support and antimicrobial therapy. The client currently has total parenteral nutrition (TPN) infusing continuously via a dedicated port of a multi-lumen central venous catheter. A new order is placed for an intermittent infusion of intravenous azithromycin. What is the safest method for the nurse to deliver the newly prescribed medication?

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Cevap: Establish a separate peripheral venous access site specifically for the antibiotic infusion.

Cevap

The safest method is to establish a separate peripheral venous access site for the antibiotic infusion.
Total parenteral nutrition (TPN) must always be administered through a dedicated intravenous line. Because of its complex composition (high dextrose, amino acids, electrolytes, and sometimes lipids), it has a very high risk of chemical incompatibility and precipitation when mixed with other medications. Furthermore, the line should not be accessed or manipulated unnecessarily due to the high risk of central line-associated bloodstream infections. Establishing a separate peripheral IV is the only safe way to administer the intermittent antibiotic without compromising the TPN.

Adım Adım Çözüm

1
Analyze the client's current intravenous therapy setup.
The client has a continuous TPN infusion running through a dedicated port of a multi-lumen central line.
Understanding the current access is necessary to determine where a new medication can be safely administered.
2
Recall the pharmacological guidelines regarding Total Parenteral Nutrition.
TPN requires a strictly dedicated line and cannot be mixed with or interrupted by other medications.
TPN contains a complex mixture of high-concentration dextrose, amino acids, and electrolytes that easily precipitates when mixed with other drugs. Furthermore, interrupting it causes sudden hypoglycemia.
3
Select the intervention that allows for the antibiotic to be given without violating TPN safety rules.
Establishing a separate peripheral intravenous site is identified as the correct action.
A separate line ensures the antibiotic is delivered on schedule while maintaining the chemical integrity and continuity of the TPN infusion.

Anahtar Kavram

Total Parenteral Nutrition (TPN) Safety and Dedicated IV Lines
Soru 522Soru →

A client with hepatic cirrhosis has just returned to the medical-surgical unit following a percutaneous liver biopsy. The client is awake, alert, and reports mild tenderness at the biopsy site. To reduce the risk of the most significant immediate complication, which action is the priority for the nurse to implement?

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Cevap: Assist the client into a right lateral position with a small rolled towel under the puncture site.

Cevap

Assist the client into a right lateral position with a small rolled towel under the puncture site.
The liver is a highly vascular organ, and a percutaneous biopsy carries a significant risk of internal hemorrhage. This risk is amplified in clients with hepatic cirrhosis who frequently suffer from coagulopathies. Assisting the client into a right lateral (side-lying) position with a towel or pillow under the puncture site utilizes the client's own body weight to apply direct, continuous pressure to the liver capsule. This mechanical compression promotes hemostasis, prevents hematoma formation, and reduces the risk of life-threatening bleeding.

Adım Adım Çözüm

1
Identify the procedure performed and its major associated physiological risks.
The client underwent a percutaneous liver biopsy, which carries a severe risk of hemorrhage due to the liver's high vascularity and the client's cirrhosis-induced coagulopathy.
Understanding the most dangerous post-procedure risk determines the immediate nursing priorities.
2
Determine the most effective physical intervention to mitigate the bleeding risk.
Applying direct pressure to the biopsy site encourages hemostasis and prevents blood from leaking into the abdominal cavity.
Mechanical compression is a primary physiological mechanism for arresting bleeding from a puncture wound.
3
Select the specific nursing action that achieves optimal site compression.
Positioning the client on their right side (right lateral decubitus) with a towel underneath uses the client's body weight to press the liver against the chest wall.
This is the evidence-based standard of care for immediate post-liver biopsy risk reduction.

Anahtar Kavram

Post-Procedure Risk Reduction: Liver Biopsy Positioning and Hemostasis
Soru 523Soru →

A nurse is caring for a client who was admitted 12 hours ago with a pelvic fracture following a fall. The client is currently restless, frequently shifting in bed, and repeatedly asking for something to drink. The most recent vital signs reveal a blood pressure of 114/82 mm Hg, a heart rate of 118 beats/minute, and a respiratory rate of 24 breaths/minute. The client's admission heart rate was 84 beats/minute. Which of the following actions should the nurse take first?

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Cevap: Perform a focused assessment of peripheral perfusion and inspect for internal bleeding.

Cevap

The correct action is to perform a focused assessment of peripheral perfusion and inspect for internal bleeding.
The correct answer focuses on further assessing for internal bleeding because the client is exhibiting classic early signs of hypovolemic shock. Pelvic fractures are highly vascular and prone to significant retroperitoneal bleeding. The body compensates for early blood loss by activating the sympathetic nervous system, leading to tachycardia, tachypnea, restlessness (due to mild cerebral hypoxia), and thirst. The blood pressure often remains normal in the early compensatory stage. The nurse must immediately perform a focused assessment of perfusion (such as capillary refill and skin temperature) and inspect for signs of bleeding before notifying the provider.

Adım Adım Çözüm

1
Analyze the clinical cues presented by the client.
The client has a pelvic fracture, increasing tachycardia (84 to 118 beats/minute), tachypnea, restlessness, and intense thirst.
Identifying abnormal trends in vital signs and behavior is the first step in clinical judgment.
2
Correlate the cues to the underlying pathophysiology.
Pelvic fractures carry a high risk of massive internal hemorrhage. The identified cues are classic early compensatory signs of hypovolemic shock, even though the blood pressure remains within a normal range.
Understanding how the body compensates for blood loss allows the nurse to anticipate complications before severe hypotension occurs.
3
Determine the priority nursing action based on the assessment.
Before notifying the healthcare provider or implementing interventions, the nurse must gather targeted assessment data regarding tissue perfusion and potential bleeding.
The nursing process dictates that assessment must occur before intervention when a new, potentially life-threatening complication is suspected.

Anahtar Kavram

Early recognition of hypovolemic shock in high-risk trauma clients
Soru 524Soru →

Ten minutes after the initiation of an intravenous (IV) piperacillin-tazobactam infusion, a client develops audible inspiratory stridor, restlessness, and lightheadedness. The client's heart rate is 128 bpm128\text{ bpm} and blood pressure is 84/50 mmHg84/50\text{ mmHg}. Which of the following priority actions should the nurse implement? Select all that apply.

Geçerli olan tümünü seçin

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Cevap: Stop the piperacillin-tazobactam infusion and disconnect the current intravenous tubing.; Prepare to administer prescribed intramuscular epinephrine.; Initiate a rapid infusion of 0.9%0.9\% sodium chloride using new intravenous tubing.

Cevap

The correct actions are to stop the infusion and disconnect the tubing, prepare intramuscular epinephrine, and initiate a rapid infusion of 0.9% sodium chloride using new tubing.
Anaphylaxis is a severe, life-threatening hypersensitivity reaction. The immediate priority is to stop the offending agent and disconnect the tubing to prevent any more medication from entering the client. Intramuscular epinephrine is the primary pharmacological treatment to reverse bronchoconstriction (stridor) and cardiovascular collapse. Additionally, rapid infusion of isotonic crystalloids (like 0.9%0.9\% sodium chloride) through entirely new IV tubing is required to expand intravascular volume and correct profound hypotension.

Adım Adım Çözüm

1
Identify the client's clinical presentation.
The client is exhibiting stridor, tachycardia, and severe hypotension (84/50 mmHg84/50\text{ mmHg}).
These are hallmark signs of anaphylactic shock, a life-threatening allergic reaction to the IV antibiotic.
2
Determine the immediate priority regarding the IV medication.
Stop the piperacillin-tazobactam infusion and disconnect the tubing completely.
Halting the administration of the allergen is the most critical first step to prevent further physiological deterioration.
3
Identify indicated pharmacological and hemodynamic interventions.
Prepare intramuscular epinephrine and administer IV fluids through new, uncontaminated tubing.
Epinephrine is required to reverse airway edema and cardiovascular collapse, while IV fluids treat the profound hypotension caused by massive vasodilation.

Anahtar Kavram

Anaphylaxis Management in Parenteral Therapy
Soru 525Soru →

A nurse is preparing to discontinue a client's non-tunneled central venous catheter (CVC) from the internal jugular vein. In what order should the nurse perform the following actions to minimize the risk of complications? Arrange the steps in the correct sequence from first to last.

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Cevap

The correct sequence is: position the client supine, remove the dressing and securements, instruct the client to perform the Valsalva maneuver, withdraw the catheter, and immediately apply a sterile occlusive dressing.
Removing a central venous catheter carries a high risk of air embolism. The proper sequence of actions is designed to manipulate intrathoracic and venous pressure to prevent air from entering the central circulation. The client must first be positioned supine to increase central venous pressure. After preparing the site by removing securements, the client performs the Valsalva maneuver to create positive intrathoracic pressure. The catheter must be withdrawn precisely during this maneuver, and the site is immediately sealed with an occlusive dressing to prevent air entry through the open tissue tract.

Adım Adım Çözüm

1
Position the client flat in a supine position.
Central venous pressure is increased in the upper body.
This is the initial critical step to create a pressure gradient that discourages air from entering the central circulation.
2
Remove the current dressing and release any securement devices.
The catheter is free and ready for removal.
Securements must be removed prior to having the client hold their breath, as the client should only hold their breath for a brief period.
3
Instruct the client to take a deep breath, hold it, and bear down.
Intrathoracic pressure is maximized.
This action (Valsalva maneuver) creates positive pressure inside the central veins, acting as a functional barrier against an air embolism.
4
Withdraw the catheter in a smooth, continuous motion.
The catheter is removed from the vein.
Pulling the catheter during the Valsalva maneuver ensures the vein is under positive pressure exactly when the tract is opened to the atmosphere.
5
Apply a sterile, occlusive dressing immediately over the insertion site.
The insertion tract is sealed.
An airtight seal prevents atmospheric air from traveling down the tissue tract into the vein after the catheter is completely out.

Anahtar Kavram

Safe removal of a central venous catheter requires meticulous technique focused on preventing air embolism, primarily achieved through supine positioning, the Valsalva maneuver, and immediate application of an occlusive dressing.
Soru 526Soru →

A nurse is caring for a client who is receiving a transfusion of packed red blood cells (PRBCs). Fifteen minutes into the transfusion, the client reports severe 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

The correct sequence is: Stop the transfusion, maintain the IV with normal saline using new tubing, assess the client's vital signs, notify the provider and blood bank, and return the blood materials to the blood bank.
In a suspected hemolytic blood transfusion reaction, the absolute first clinical priority is to stop the transfusion to prevent further exposure to incompatible blood. Next, the nurse must maintain intravenous access with 0.9% sodium chloride through new tubing to keep the vein open for emergency drugs without infusing the remaining blood in the old tubing. After stabilizing the IV line, the nurse assesses the client's vital signs and respiratory status to gather essential data. This data is then reported when notifying the healthcare provider and blood bank. Finally, the blood bag and tubing are returned to the blood bank for further investigation.

Adım Adım Çözüm

1
Identify the type of emergency.
Severe lower back pain, chills, and dyspnea indicate an acute hemolytic transfusion reaction.
Recognizing the complication is the prerequisite for initiating the correct emergency protocol.
2
Stop the transfusion immediately.
The infusion of incompatible blood is halted.
Stopping the trigger limits the amount of antigen entering the body, minimizing further physiological deterioration.
3
Change the tubing and start normal saline.
Intravenous access is maintained without flushing more blood into the client.
A patent IV is essential for administering emergency medications and fluids to manage hypotension or shock.
4
Assess the client.
Vital signs and respiratory status are documented.
Provides a baseline of the client's current physiological compromise to communicate to the provider.
5
Notify the provider and blood bank, then send the equipment.
Further medical orders are obtained and the blood bank can investigate the reaction.
Ensures collaborative management and identifies the immunological cause of the adverse reaction.

Anahtar Kavram

Management of Acute Hemolytic Transfusion Reaction
Tahmini Süre:1m 30s
Soru 527Soru →

A nurse is assessing a client with diabetic ketoacidosis (DKA) who is receiving a continuous intravenous regular insulin infusion. The client is lethargic and has deep, rapid respirations at 2828 breaths/min. The most recent arterial blood gas (ABG) results are: pH 7.297.29, PaCO 2_2 3030 mm Hg, PaO 2_2 9494 mm Hg, and HCO 3−_3^- 1515 mEq/L. Which of the following is the most appropriate action by the nurse?

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Cevap: Document the findings and continue to monitor the client's compensatory respiratory pattern.

Cevap

Document the findings and continue to monitor the client's compensatory respiratory pattern.
Kussmaul respirations (deep, rapid breathing) are an expected, physiological compensatory mechanism in metabolic acidosis (such as DKA). The lungs increase the rate and depth of ventilation to exhale carbon dioxide, which acts as an acid in the body, in an attempt to raise the blood pH back toward normal. Because the ABG indicates partially compensated metabolic acidosis, the most appropriate action is to continue monitoring this vital adaptation while the insulin infusion treats the underlying ketoacidosis.

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) results.
The pH (7.297.29) is low (acidosis), and the HCO 3−_3^- (1515 mEq/L) is low, identifying the primary disorder as metabolic acidosis. The PaCO 2_2 (3030 mm Hg) is also low, which indicates partial respiratory compensation.
Accurate interpretation of ABGs is essential to determine the client's current acid-base status and physiological response.
2
Evaluate the clinical presentation in relation to the ABGs.
The client is experiencing deep, rapid breathing known as Kussmaul respirations.
This is a necessary physiological adaptation where the lungs attempt to blow off excess carbon dioxide (an acid) to bring the blood pH back toward a normal range.
3
Determine the most appropriate nursing intervention.
The nurse should allow the compensatory breathing to continue while the underlying cause (DKA) is treated with the ongoing insulin infusion.
Intervening to slow the respiratory rate or neutralize the acid prematurely can lead to dangerous complications and a sudden worsening of the acidosis.

Anahtar Kavram

Respiratory compensation in metabolic acidosis (Kussmaul respirations)
Soru 528Soru →

A nurse is evaluating a client with acute kidney injury who is receiving a prescribed continuous intravenous infusion of regular insulin and 50% dextrose in water. To minimize the risk of a severe physiological complication, which of the following assessment findings demands the most immediate intervention by the nurse?

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Cevap: The cardiac monitor displays new development of prominent U waves and flattened T waves.

Cevap

The development of prominent U waves and flattened T waves on the cardiac monitor requires immediate intervention.
Intravenous regular insulin administered with dextrose is a standard treatment to temporarily shift potassium from the extracellular space into the intracellular space, effectively reducing serum potassium levels. A primary risk of this therapy is a severe overcorrection leading to hypokalemia. The presence of prominent U waves and flattened T waves on an electrocardiogram are classic physiological indicators of hypokalemia, which can rapidly degenerate into life-threatening ventricular arrhythmias. This finding demands immediate cessation of the infusion, serum electrolyte verification, and notification of the healthcare provider to reduce the risk of a potential cardiac event.

Adım Adım Çözüm

1
Analyze the prescribed therapy and its physiological purpose.
The client is receiving regular insulin and 50% dextrose in water, which is a treatment used to lower serum potassium levels by shifting potassium from the extracellular space into the cells.
Understanding the mechanism of action is necessary to anticipate potential adverse effects and complications.
2
Evaluate the clinical findings in the options against the risks of the therapy.
The therapy risks lowering the potassium level too much (hypokalemia). Prominent U waves and flattened T waves are classic ECG signs of hypokalemia.
Connecting the treatment risk to the assessment findings identifies the most critical complication.
3
Prioritize the assessment findings based on immediate threat to life.
A new cardiac arrhythmia risk (hypokalemia) supersedes expected metabolic acidosis, normal vital sign variations, and safe client positioning.
Prioritization requires addressing airway, breathing, and circulation (arrhythmia) before expected chronic baseline findings.

Anahtar Kavram

Monitoring for and mitigating life-threatening hypokalemia during intravenous insulin and dextrose administration.
Soru 529Soru →

A client admitted with bacterial cellulitis is receiving a continuous primary infusion of normal saline at 125 mL/hr125\text{ mL/hr}. The nurse is ready to initiate a scheduled dose of intravenous ampicillin-sulbactam via a secondary piggyback line. Arrange the following steps in the correct order to safely set up the secondary infusion.

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Cevap

The correct sequence is to first close the roller clamp on the secondary tubing, then spike the bag and prime the tubing. Next, cleanse the uppermost Y-site port of the primary tubing, attach the secondary tubing to this port, and finally lower the primary continuous intravenous fluid bag.
This sequence ensures patient safety, asepsis, and proper administration mechanics. Closing the clamp first prevents medication waste. Spiking and priming prepares the line and removes air. Cleansing the port maintains asepsis. Attaching to the upper Y-site ensures the pump controls the rate. Lowering the primary bag utilizes gravity to allow the piggyback to infuse entirely before the primary fluid resumes.

Adım Adım Çözüm

1
Close the roller clamp on the secondary intravenous tubing.
The tubing is sealed off.
Prevents immediate uncontrolled flow of medication and rapid air entry when the IV bag is spiked.
2
Spike the secondary medication bag and prime the tubing.
The tubing is filled with the medication and purged of air.
Ensures the line is ready for connection without introducing air into the patient's vascular system.
3
Cleanse the uppermost Y-site port of the primary tubing with an antimicrobial swab.
The connection site is disinfected.
Prevents the introduction of pathogens into the central or peripheral bloodstream.
4
Attach the secondary tubing to the primary line.
The secondary line is securely connected to the infusion system.
Allows the secondary medication to be routed through the primary line so its rate can be regulated by the main infusion pump.
5
Suspend the primary intravenous fluid bag lower than the secondary medication bag.
The primary bag hangs physically lower than the secondary bag.
Hydrostatic pressure dictates that fluid from the higher bag (secondary) will infuse first. Once the secondary bag empties, the primary fluid will automatically resume.

Anahtar Kavram

Intravenous (IV) Piggyback Administration Setup
Soru 530Soru →

An emergency department nurse evaluates an older adult client brought in from a long-term care facility with altered mental status and a new-onset productive cough. Initial assessment reveals a blood pressure of 86/48 mm Hg, an apical pulse of 124 beats/min, and a respiratory rate of 26 breaths/min. The client's skin is warm and flushed. Serum laboratory results indicate a white blood cell count of 19,000/mm³ and a serum lactate level of 4.5 mmol/L. Which of the following priority actions should the nurse anticipate incorporating into the immediate plan of care? (Select all that apply)

Geçerli olan tümünü seçin

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Cevap: Obtain blood cultures from two different peripheral sites.; Administer a rapid intravenous infusion of 0.9% sodium chloride.; Administer prescribed broad-spectrum intravenous antibiotics.

Cevap

The correct interventions are to obtain blood cultures, administer a rapid infusion of 0.9% sodium chloride, and administer broad-spectrum intravenous antibiotics.
The client is experiencing septic shock, evidenced by an elevated lactate level, leukocytosis, and significant hemodynamic instability (hypotension, tachycardia). The priority is to restore tissue perfusion and treat the underlying infection. Evidence-based protocols require obtaining blood cultures before starting antimicrobials, followed immediately by administering broad-spectrum antibiotics and a rapid isotonic fluid bolus (e.g., 0.9% sodium chloride) to expand intravascular volume and improve cellular oxygenation.

Adım Adım Çözüm

1
Analyze the client's clinical presentation and laboratory values.
The client has severe hypotension, tachycardia, tachypnea, altered mental status, leukocytosis, and a significantly elevated lactate level.
These assessment findings are classic indicators of sepsis progressing to septic shock, which is a life-threatening medical emergency.
2
Determine the priority evidence-based interventions for septic shock.
The Surviving Sepsis Campaign bundle requires immediate fluid resuscitation, obtaining blood cultures, and administering broad-spectrum antibiotics within the first hour.
Restoring intravascular volume and treating the underlying infection are the definitive primary treatments for sepsis.
3
Evaluate the remaining options against safe practice standards for shock.
Vasopressors before fluids, loop diuretics, and high Fowler's positioning are all contraindicated for this client.
These actions would further deplete intravascular volume, decrease venous return, and exacerbate systemic hypotension.

Anahtar Kavram

Management of Septic Shock and Systemic Inflammatory Response Syndrome (SIRS)
Soru 531Soru →

A nurse is planning care for a client who is 6 hours post-operative following an exploratory laparotomy. Which of the following nursing actions are appropriate to reduce the risk of potential complications? (Select all that apply.)

Geçerli olan tümünü seçin

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Cevap: Auscultate all four quadrants of the abdomen for bowel sounds prior to performing abdominal palpation.; Instruct the client to use a splint pillow while performing deep breathing and coughing exercises.; Monitor for a narrowing pulse pressure and mild tachycardia as early systemic signs of internal hemorrhage.

Cevap

The correct actions include auscultating the abdomen before palpation, instructing the client to use a splint pillow during deep breathing, and monitoring for a narrowing pulse pressure with mild tachycardia.
Appropriate risk reduction strategies for a post-operative abdominal surgery client include assessing the abdomen in the correct sequence (auscultation before palpation) to ensure accurate data, using a splint pillow during respiratory exercises to prevent wound dehiscence and atelectasis, and monitoring for early systemic signs of shock such as a narrowing pulse pressure and mild tachycardia.

Adım Adım Çözüm

1
Analyze the client's clinical status and post-operative risks.
The client is recovering from an exploratory laparotomy and is at risk for hemorrhage, respiratory compromise (atelectasis), deep vein thrombosis (DVT), and wound dehiscence.
Identifying specific risks associated with major abdominal surgery guides the selection of targeted preventive interventions.
2
Evaluate each proposed nursing intervention for safety and efficacy.
Proper assessment sequence, incisional splinting, and vigilant vital sign monitoring safely mitigate risks. Improper delegation, incorrect positioning, and misinterpretation of physiological data increase client risk.
Nursing actions must align with evidence-based practice and safety standards to prevent physiological deterioration.

Anahtar Kavram

Post-Operative Risk Reduction and Complication Prevention
Soru 532Soru →

A client with new-onset seizures is scheduled to receive a loading dose of intravenous (IV) phenytoin. The client currently has a continuous IV infusion of 5%5\% dextrose in water (D5W) running at 50 mL/hr50\text{ mL/hr} through a single peripheral IV catheter. Which action should the nurse take to administer the phenytoin safely?

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Cevap: Stop the continuous D5W infusion and thoroughly flush the intravenous line with 0.9%0.9\% sodium chloride before and after giving the medication.

Cevap

The nurse must stop the continuous D5W infusion and thoroughly flush the intravenous line with 0.9%0.9\% sodium chloride before and after giving the medication.
Phenytoin is chemically incompatible with dextrose-containing solutions and will rapidly precipitate if they mix in the intravenous line. To safely administer the medication through the same peripheral catheter, the nurse must pause the dextrose infusion and thoroughly flush the line with a compatible solution, such as normal saline (0.9%0.9\% sodium chloride), both before and after the phenytoin push to prevent crystal formation and maintain line patency.

Adım Adım Çözüm

1
Identify the compatibility of the prescribed medication (phenytoin) with the currently infusing solution (5%5\% dextrose in water).
Recognize that phenytoin and dextrose are highly incompatible.
Mixing phenytoin with dextrose solutions causes immediate crystallization and precipitation in the IV tubing.
2
Determine the appropriate intervention to administer the medication through the single available peripheral line.
The continuous dextrose infusion must be paused.
The line must be cleared of all dextrose before the phenytoin can be safely introduced.
3
Select the correct flush solution to clear the line and maintain patency.
Select 0.9%0.9\% sodium chloride (normal saline) to flush before and after the medication push.
Normal saline is compatible with phenytoin and effectively clears the line of incompatible fluids while preventing venous irritation.

Anahtar Kavram

Intravenous medication compatibility and safe parenteral administration practices for phenytoin.
Soru 533Soru →

A nurse is monitoring a client who was admitted with severe acute pancreatitis. During the most recent assessment, the nurse notes the client is newly restless and reports intense thirst. Comparing the current vital signs to the baseline from four hours ago, the blood pressure has changed from 132/78 mm Hg to 116/94 mm Hg, the heart rate has increased from 84 to 118 beats per minute, and the respiratory rate has increased from 16 to 26 breaths per minute. Which conclusion should the nurse draw from these clinical findings?

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Cevap: The client is exhibiting early compensatory shock due to third-spacing of fluids, requiring immediate volume resuscitation.

Cevap

The nurse should conclude that the client is exhibiting early compensatory shock due to third-spacing of fluids, requiring immediate volume resuscitation.
The correct conclusion identifies the classic presentation of early (compensatory) hypovolemic shock. Acute pancreatitis triggers a massive systemic inflammatory response, causing endothelial permeability and third-spacing of intravascular fluid into the interstitium and peritoneal cavity. As intravascular volume drops, the sympathetic nervous system activates, causing peripheral vasoconstriction. This raises the diastolic blood pressure, leading to a narrowed pulse pressure (from 54 mm Hg to 22 mm Hg). Tachycardia, tachypnea, thirst, and restlessness (due to mild cerebral hypoxia) are all hallmark compensatory mechanisms attempting to maintain cardiac output before the systolic blood pressure ultimately crashes.

Adım Adım Çözüm

1
Analyze the vital sign trends, specifically calculating the pulse pressure (systolic minus diastolic).
Baseline pulse pressure was 54 mm Hg (132 - 78). Current pulse pressure is 22 mm Hg (116 - 94).
A narrowing pulse pressure is a critical early indicator of decreased stroke volume and sympathetic nervous system compensation.
2
Correlate the vital sign changes with the client's new physical symptoms.
The client has a narrowed pulse pressure, tachycardia (118 bpm), tachypnea (26 bpm), restlessness, and intense thirst.
These combined findings paint a complete picture of decreased tissue perfusion and compensatory mechanisms activating to maintain cardiac output.
3
Connect the physiological findings to the underlying pathophysiology of acute pancreatitis.
Acute pancreatitis is known to cause severe inflammatory responses leading to third-spacing (fluid shifting from the intravascular space into the interstitial space/peritoneum).
Understanding the disease process confirms that hypovolemic shock is a highly probable and life-threatening complication.
4
Determine the highest priority clinical interpretation.
The findings indicate the compensatory stage of shock, requiring urgent fluid resuscitation to prevent progression to decompensated shock.
In the compensatory stage, the body is still maintaining a normal systolic blood pressure, but urgent intervention is required before compensatory mechanisms fail.

Anahtar Kavram

Recognition of early compensatory shock and fluid volume shifts (third-spacing)
Soru 534Soru →

A nurse in the intensive care unit is preparing to initiate a continuous intravenous (IV) infusion of norepinephrine for a client experiencing severe hypotension. The prescribed dose is 0.06 mcg/kg/min0.06\text{ mcg/kg/min}. The client weighs 78 kg78\text{ kg}. The pharmacy provides a prediluted IV bag containing 8 mg8\text{ mg} of norepinephrine in 250 mL250\text{ mL} of 5%5\% dextrose in water (D5WD_5W).

At what rate, in mL/hr\text{mL/hr}, should the nurse program the infusion pump? (Record your answer using one decimal place.)

Cevabı ve açıklamayı göster

Cevap: 8.8

Cevap

8.8
To safely administer a weight-based continuous IV infusion, the exact hourly dose must be determined (280.8 mcg/hr280.8\text{ mcg/hr}) and divided by the concentration of the supplied solution (32 mcg/mL32\text{ mcg/mL}). The raw quotient of 8.775 mL/hr8.775\text{ mL/hr} is then rounded to the nearest tenth, resulting in the correct pump setting of 8.8 mL/hr8.8\text{ mL/hr}.

Adım Adım Çözüm

1
Calculate the required mcg per minute based on the client's weight.
4.68 mcg/min4.68\text{ mcg/min}
Weight-based dosing requires multiplying the prescribed rate by the client's total body weight in kilograms.
2
Convert the per-minute dose to an hourly dose.
280.8 mcg/hr280.8\text{ mcg/hr}
Infusion pumps are programmed in mL per hour, requiring the medication dose to first be converted to an hourly rate.
3
Determine the concentration of the supplied IV solution in mcg/mL.
32 mcg/mL32\text{ mcg/mL}
The prescription is in micrograms, but the medication is supplied in milligrams. Converting 8 mg8\text{ mg} to 8,000 mcg8,000\text{ mcg} and dividing by the 250 mL250\text{ mL} volume determines the specific unit concentration.
4
Calculate the exact fluid volume per hour required.
8.775 mL/hr8.775\text{ mL/hr}
Dividing the total hourly dose by the concentration yields the total fluid volume needed per hour.
5
Round the final result to one decimal place.
8.8 mL/hr8.8\text{ mL/hr}
The prompt explicitly instructs to record the answer using one decimal place.

Anahtar Kavram

Weight-based continuous intravenous infusion calculations
Soru 535Soru →

A nurse is evaluating a 54-year-old client who is 4 hours post-operative following a right partial nephrectomy for renal cell carcinoma. The client's baseline vital signs upon arrival to the surgical unit were: blood pressure 128/74 mm Hg, heart rate 76 beats/min, and respiratory rate 16 breaths/min. Which of the following assessment findings is the EARLIEST indicator that the client is developing hemorrhagic shock?

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Cevap: A blood pressure of 122/88 mm Hg, a heart rate of 114 beats/min, and new-onset restlessness.

Cevap

A blood pressure of 122/88 mm Hg, a heart rate of 114 beats/min, and new-onset restlessness.
In the early compensatory stage of hemorrhagic shock, the body attempts to maintain cardiac output and tissue perfusion. Epinephrine and norepinephrine release leads to an increased heart rate (tachycardia) and peripheral vasoconstriction. This vasoconstriction raises the diastolic blood pressure while the systolic pressure remains relatively stable, resulting in a narrowed pulse pressure. Additionally, early cerebral hypoxia manifests as restlessness or anxiety.

Adım Adım Çözüm

1
Analyze the client's baseline vital signs.
The baseline blood pressure is 128/74 mm Hg (pulse pressure of 54 mm Hg) and the baseline heart rate is 76 beats/min.
Establishing a baseline is necessary to identify significant postoperative trends and deviations.
2
Compare the assessment findings in each option to the baseline and clinical expectations.
The finding of blood pressure 122/88 mm Hg, heart rate 114, and restlessness shows a narrowed pulse pressure (34 mm Hg) and new-onset tachycardia.
This comparison identifies the physiological changes associated with the early compensatory stage of shock.
3
Differentiate between early and late signs of shock.
Hypotension (blood pressure 86/52 mm Hg) is identified as a late sign, while narrowing pulse pressure, tachycardia, and restlessness are confirmed as the earliest indicators.
The question explicitly asks for the EARLIEST indicator of hemorrhagic shock.

Anahtar Kavram

Early indicators of hemorrhagic and hypovolemic shock (Compensatory Stage)
Soru 536Soru →

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 severe lower back pain, shortness of breath, and chills. Arrange the following nursing actions in the correct priority order from first to last.

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Cevabı ve açıklamayı göster

Cevap

The correct sequence is to first stop the transfusion, then maintain IV access with normal saline using new tubing, followed by assessing the client, notifying the provider and blood bank, and finally sending the blood bag and tubing back to the blood bank.
According to prioritization principles, when a client experiences an adverse reaction to an infusion, the immediate priority is to stop the causative agent. Next, the nurse must maintain a patent IV line with normal saline using new tubing to ensure emergency medications can be given without flushing more of the reactive blood into the client. Only after these immediate safety measures are taken should the nurse conduct a full assessment, notify the provider, and handle the blood products.

Adım Adım Çözüm

1
Identify the signs of an acute hemolytic transfusion reaction.
Recognize that lower back pain, shortness of breath, and chills require immediate intervention.
Early recognition is crucial for reducing risk potential and preventing severe physiological complications.
2
Determine the most critical priority action.
Select stopping the transfusion as the first step.
Removing the causative agent immediately prevents further harm to the client.
3
Sequence the remaining supportive and administrative actions.
Place securing IV access before assessment, followed by provider notification, and finally returning the equipment.
Airway and circulation support (IV access) precedes full assessment, and client stabilization precedes diagnostic follow-up.

Anahtar Kavram

Management of Acute Hemolytic Transfusion Reactions
Tahmini Süre:1m 30s
Soru 537Soru →

A nurse is caring for a client with a spinal cord injury at the T4 level. The client suddenly reports a severe, pounding headache and blurred vision. The nurse notes profuse diaphoresis and flushing above the level of the injury. The client's blood pressure is 210/115 mm Hg, and the heart rate is 52 beats/min. Arrange the following nursing actions in the correct priority order.

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Cevabı ve açıklamayı göster

Cevap

The correct priority sequence is to first elevate the head of the bed, then loosen clothing and check the bladder, assess for a fecal impaction, administer an antihypertensive medication if needed, and finally document the event.
In autonomic dysreflexia, the priority is preventing a stroke from severe hypertension. Elevating the head of the bed provides immediate orthostatic relief. The nurse then systematically assesses for and removes noxious stimuli below the level of the injury, starting with the bladder (most common) and then the bowel. Medications are a secondary intervention if trigger removal fails. Documentation is the final step after stabilization.

Adım Adım Çözüm

1
Elevate the head of the bed to a high Fowler's position.
Induces an orthostatic decrease in blood pressure.
Autonomic dysreflexia causes severe, life-threatening hypertension. Sitting the client upright is the quickest non-pharmacological way to lower the blood pressure and prevent cerebral hemorrhage.
2
Loosen constrictive clothing and assess the urinary catheter for kinks.
Identifies and resolves the most common noxious stimulus.
The condition is a reflex response to stimuli below the level of injury. A distended bladder from a kinked catheter or full bladder is the leading cause.
3
Assess the client's rectum for a fecal impaction if the bladder is empty.
Identifies the second most common trigger.
If the bladder is ruled out, a bowel impaction is the next most likely noxious stimulus causing the sympathetic surge.
4
Administer a prescribed rapid-acting antihypertensive medication.
Pharmacologically lowers the blood pressure.
Medications are indicated only if identifying and removing the underlying noxious stimuli fails to resolve the hypertensive crisis.
5
Document the clinical event, the interventions implemented, and the client's response.
Provides an accurate medical record of the emergency.
Documentation should always occur after the client's immediate physiological needs have been met and stabilization is achieved.

Anahtar Kavram

Autonomic dysreflexia is a medical emergency in clients with spinal cord injuries at or above T6. Management prioritizes immediately lowering blood pressure through positioning (high Fowler's), followed by identifying and removing the triggering noxious stimulus (most commonly a full bladder or bowel).
Soru 538Soru →

A client admitted with ventricular tachycardia is receiving a continuous intravenous (IV) infusion of amiodarone through a dedicated peripheral line. The healthcare provider prescribes a STAT dose of IV furosemide to treat a sudden onset of pulmonary edema. The nurse notes in the facility's drug reference guide that furosemide and amiodarone are incompatible at the Y-site. Which action should the nurse take?

Cevabı ve açıklamayı göster

Cevap: Insert a new peripheral intravenous catheter to administer the furosemide.

Cevap

Insert a new peripheral intravenous catheter to administer the furosemide.
The safest and most effective nursing action is to establish a second peripheral IV line. Amiodarone is a critical continuous antiarrhythmic infusion that should never be paused unnecessarily, as interrupting the medication could lead to an immediate recurrence of life-threatening ventricular tachycardia. Because furosemide is chemically incompatible with amiodarone, a new line allows the emergency diuretic to be administered promptly for the pulmonary edema without compromising the continuous antiarrhythmic therapy or risking crystallization inside the IV tubing.

Adım Adım Çözüm

1
Identify the chemical incompatibility between amiodarone and furosemide.
The medications cannot be administered through the same IV tubing without risking chemical precipitation.
Mixing incompatible medications can cause crystal formation, leading to catheter occlusion or a life-threatening embolism.
2
Evaluate the clinical nature of the continuous amiodarone infusion.
Amiodarone is a critical, continuous antiarrhythmic medication.
Pausing the infusion to flush the line and push another medication could result in a sudden drop in serum drug levels, triggering the immediate recurrence of a life-threatening ventricular dysrhythmia.
3
Determine the safest method for administering the STAT furosemide.
Establishing a second IV access site is required.
A new IV line allows immediate administration of the emergency diuretic for pulmonary edema without interrupting the life-sustaining antiarrhythmic drip.

Anahtar Kavram

Management of Intravenous Therapy Incompatibilities and Critical Infusions
Soru 539Soru →

A nurse is preparing to administer a unit of packed red blood cells (PRBCs) to an adult client with symptomatic anemia. Which of the following interventions should the nurse implement to ensure safe administration? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Verify the client's identification band and the blood product label with another registered nurse at the bedside.; Prime the Y-type blood administration tubing exclusively with 0.9% sodium chloride.; Remain in the client's room to closely monitor for adverse reactions during the first 15 minutes of the transfusion.

Cevap

The correct interventions for safe blood administration include verifying the client and product with another registered nurse, priming the tubing with 0.9% sodium chloride, and remaining with the client for the first 15 minutes of the transfusion.
Safe administration of packed red blood cells requires strict adherence to protocols. Verifying the blood product and client identity with a second registered nurse ensures ABO compatibility. Priming the administration set with 0.9% sodium chloride is mandatory because it is the only isotonic fluid that does not cause hemolysis or clotting of the blood product. Remaining with the client for the first 15 minutes is crucial because this is the window when life-threatening hemolytic or anaphylactic reactions are most likely to occur.

Adım Adım Çözüm

1
Identify the primary goal and risks associated with the procedure.
The goal is to safely administer PRBCs while preventing and actively monitoring for potentially fatal adverse reactions.
Blood transfusions carry a high risk of life-threatening hemolytic, allergic, and febrile reactions, requiring strict adherence to safety protocols.
2
Evaluate fluid compatibility and correct line setup.
Determine that only 0.9% sodium chloride can be used to prime the line, and no other medications or fluids can be piggybacked.
Mixing blood with other fluids (like dextrose or lactated Ringer's) or medications causes cellular lysis or precipitation within the tubing.
3
Determine appropriate delegation and monitoring requirements.
Recognize that two registered nurses must independently verify the blood, and the assigned RN must assess the client for the first 15 minutes.
Verification and early reaction detection require the registered nurse's scope of practice, advanced assessment skills, and clinical judgment.

Anahtar Kavram

Safe Administration of Blood Products
Soru 540Soru →

A nurse is caring for a client who has been receiving continuous nasogastric (NG) tube suctioning for three days to treat a paralytic ileus. The client's most recent arterial blood gas (ABG) values are: pH=7.53\text{pH} = 7.53, PaCO2=47 mm Hg\text{PaCO}_2 = 47 \text{ mm Hg}, and HCO3−=33 mEq/L\text{HCO}_3^- = 33 \text{ mEq/L}. Which clinical manifestation is a direct physiological consequence of the client's current acid-base imbalance?

Cevabı ve açıklamayı göster

Cevap: Muscle twitching and a positive Trousseau sign

Cevap

The correct answer is muscle twitching and a positive Trousseau sign, which indicate hypocalcemia resulting from metabolic alkalosis.
Prolonged nasogastric suctioning removes hydrochloric acid from the stomach, leading to metabolic alkalosis (indicated by the pH of 7.53 and bicarbonate of 33 mEq/L). In an alkalotic state, hydrogen ions detach from plasma proteins (like albumin) to act as a buffer. This frees up negatively charged binding sites on the proteins, which rapidly bind to free ionized calcium in the blood. The resulting drop in free ionized calcium (relative hypocalcemia) leads to heightened neuromuscular excitability. This manifests clinically as muscle twitching, cramping, hyperreflexia, and a positive Trousseau sign (carpopedal spasm).

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) values to determine the primary acid-base imbalance.
The elevated pH (7.53) indicates alkalemia. The elevated HCO3−\text{HCO}_3^- (33 mEq/L) matches the alkaline pH, identifying primary metabolic alkalosis. The slightly elevated PaCO2\text{PaCO}_2 (47 mm Hg) shows partial respiratory compensation.
Establishing the correct acid-base disturbance is required to anticipate the physiological manifestations.
2
Determine how metabolic alkalosis affects serum electrolytes, specifically calcium.
In an alkaline environment, hydrogen ions dissociate from plasma proteins like albumin to buffer the blood. This leaves more binding sites available on albumin, which then bind free calcium, causing a rapid decrease in ionized (active) serum calcium.
Electrolyte shifts are the primary cause of symptoms during acute acid-base imbalances.
3
Identify the clinical signs associated with decreased ionized calcium (hypocalcemia).
Hypocalcemia causes increased neuromuscular excitability, which presents clinically as muscle twitching, numbness, tingling, hyperactive deep tendon reflexes, and a positive Trousseau or Chvostek sign.
This answers the question by linking the ABG interpretation to the anticipated physical assessment finding.

Anahtar Kavram

Metabolic alkalosis resulting in symptomatic hypocalcemia
Tahmini Süre:1m 30s
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Physiological Integrity Alıştırma Soruları — NCLEX-RN — Sayfa 27 | Examkin