Physiological Integrity

1960 soru

Soru 1921Soru →

A nurse is conducting a follow-up assessment on a client who underwent a transfemoral cardiac catheterization two hours ago. The client is resting in a supine position and reports the new onset of mild back pain. Which of the following vital sign profiles requires the nurse to activate the rapid response team?

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Cevap: Blood pressure 110/88 mm Hg, heart rate 108 beats/minute, respiratory rate 22 breaths/minute

Cevap

The vital sign profile demonstrating a blood pressure of 110/88 mm Hg, a heart rate of 108 beats/minute, and a respiratory rate of 22 breaths/minute indicates a medical emergency.
The correct answer indicates a narrowing pulse pressure of 2222 mm Hg combined with tachycardia and mild tachypnea. In a client who recently underwent a transfemoral cardiac catheterization, the new onset of back pain is a classic indicator of a retroperitoneal hemorrhage. These vital signs reflect the body's compensatory mechanisms for acute hypovolemia, prioritizing immediate emergency intervention.

Adım Adım Çözüm

1
Analyze the clinical scenario and associated risks.
Identify that a transfemoral cardiac catheterization carries a high risk for bleeding, and new-onset back pain strongly suggests a retroperitoneal hemorrhage.
Anticipating potential procedural complications directs the focus of the vital sign assessment.
2
Evaluate the principles of compensatory shock.
Recall that early hypovolemic shock presents with a narrowing pulse pressure (systolic minus diastolic) and an increasing heart rate.
This determines which vital sign profile reflects acute physiological deterioration before profound hypotension occurs.
3
Calculate and compare parameters across the options.
Assess the correct profile: the pulse pressure is 2222 mm Hg (110−88110 - 88), which is significantly narrowed, and the heart rate is elevated at 108 beats/minute.
This confirms the presence of compensatory shock, making it the highest priority for emergency intervention.

Anahtar Kavram

Early recognition of hypovolemic shock and retroperitoneal bleeding
Soru 1922Soru →

A nurse is caring for a client admitted 6 hours ago with fractures of the left 7th, 8th, and 9th ribs following a motor vehicle crash. The client's admission vital signs were blood pressure 132/74 mmHg, heart rate 78 beats/min, and respiratory rate 16 breaths/min. Which current assessment finding is the highest priority for the nurse to report to the healthcare provider?

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Cevap: Blood pressure 114/86 mmHg and heart rate 96 beats/min

Cevap

The vital sign changes demonstrating a narrowing pulse pressure (from 58 mmHg to 28 mmHg) and increasing heart rate.
The left 7th, 8th, and 9th ribs protect the spleen. Fractures in this area put the client at high risk for splenic rupture and internal hemorrhage. In the early (compensatory) stage of hypovolemic shock, sympathetic nervous system activation causes peripheral vasoconstriction, which raises the diastolic blood pressure, while decreased stroke volume lowers the systolic blood pressure. This results in a narrowed pulse pressure (from a baseline of 58 mmHg down to 28 mmHg). A narrowing pulse pressure accompanied by a rising heart rate is a subtle but critical early indicator of hemorrhagic shock, requiring immediate intervention before frank hypotension develops.

Adım Adım Çözüm

1
Analyze the client's risk factors based on the mechanism of injury.
Fractures of the lower left ribs (7th through 9th) place the client at high risk for underlying organ damage, specifically a ruptured spleen and subsequent internal hemorrhage.
The spleen is located in the left upper quadrant and is protected by the lower left rib cage.
2
Evaluate the vital sign trends by comparing current readings to the baseline.
The systolic pressure decreased (132 to 114) while the diastolic pressure increased (74 to 86), narrowing the pulse pressure significantly from 58 mmHg to 28 mmHg. The heart rate also increased from 78 to 96 beats/min.
Identifying trends is essential because isolated vital signs (like a heart rate of 96 or systolic BP of 114) may appear to fall within 'normal' parameters despite active physiological decompensation.
3
Apply physiological concepts of shock to the clinical findings.
The changes indicate sympathetic nervous system compensation for hypovolemia. Decreased stroke volume lowers systolic pressure, while peripheral vasoconstriction raises diastolic pressure.
Early recognition of compensatory shock is required to prevent progression to decompensated shock and cardiovascular collapse.
4
Compare the severity and expectedness of all options to establish priority.
The hemodynamic changes indicate a life-threatening complication, whereas the ABG changes, diminished breath sounds, and pleuritic pain are expected, non-emergent findings associated with rib fractures.
Clinical prioritization requires addressing unexpected, unstable, or life-threatening conditions (ABCs) before expected, localized symptoms.

Anahtar Kavram

Recognition of early, compensatory hypovolemic shock (narrowing pulse pressure) following high-risk traumatic injury.
Soru 1923Soru →

An adult client is transferred to the cardiac step-down unit after a percutaneous coronary intervention utilizing the right femoral artery approach. During routine monitoring, the nurse notes the client's blood pressure has trended downward from 134/82 mm Hg to 106/64 mm Hg within the past hour. Simultaneously, the client complains of sudden, deep pain in the lower back. Which initial action should the nurse perform?

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Cevap: Examine the right groin insertion site, flank, and retroperitoneal area for swelling or bruising.

Cevap

The correct action is to examine the right groin insertion site, flank, and retroperitoneal area for swelling or bruising.
The combination of a dropping blood pressure and new-onset lower back pain following a femoral artery procedure strongly suggests retroperitoneal bleeding. Blood tracking into the retroperitoneal space irritates nerves, causing back or flank pain, while the loss of circulating volume causes hypotension. The nurse's first priority is to directly assess the insertion site, flank, and retroperitoneal area for a hematoma, ecchymosis, or swelling to confirm this life-threatening complication.

Adım Adım Çözüm

1
Analyze the client's clinical presentation.
The client has a downward trending blood pressure and new-onset lower back pain following a femoral artery puncture.
Identifying these acute changes is crucial for recognizing potential post-procedural complications.
2
Correlate the findings with potential procedural complications.
Hypotension combined with back or flank pain are classic early indicators of retroperitoneal bleeding, a severe risk after femoral cardiac catheterization.
Blood can pool in the retroperitoneal space without obvious external bleeding at the immediate puncture site.
3
Determine the safest priority nursing intervention.
The nurse must immediately physically assess the puncture site, flank, and retroperitoneal area to confirm bleeding.
Direct assessment provides the necessary clinical data to confirm hemorrhage and implement life-saving interventions before notifying the provider.

Anahtar Kavram

Recognizing and assessing for retroperitoneal hemorrhage post-cardiac catheterization
Soru 1924Soru →

A nurse is caring for a client receiving an intravenous infusion of a cephalosporin antibiotic. The client suddenly reports a feeling of impending doom, throat tightness, and becomes visibly dyspneic with audible wheezing. The client's blood pressure is 85/50 mm Hg, and heart rate is 128 beats/minute. Arrange the following nursing actions in the priority order they should be performed. (Place the first action at the top and the last action at the bottom.)

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Cevap

The correct sequence is: Stop the infusion, ensure airway and apply oxygen, administer intramuscular epinephrine, initiate an intravenous fluid bolus, and finally administer adjunctive medications like diphenhydramine and corticosteroids.
The correct sequence strictly adheres to emergency management protocols for anaphylaxis: eliminate the inciting trigger first, secure Airway and Breathing (oxygen), administer the definitive pharmacological treatment (epinephrine), support Circulation (IV fluids for hypotension), and conclude with adjunctive therapies to prevent recurrence.

Adım Adım Çözüm

1
Analyze the clinical scenario and identify the acute complication.
The client is experiencing anaphylactic shock, characterized by throat tightness, wheezing, hypotension, and tachycardia triggered by an intravenous antibiotic.
Recognizing the pattern of anaphylaxis dictates the immediate emergency response algorithm.
2
Prioritize interventions based on the ABCs (Airway, Breathing, Circulation) and removal of the trigger.
Stopping the infusion (trigger) must come first, followed immediately by airway management and oxygenation (Airway/Breathing).
Continuing the infusion worsens the reaction. Without a patent airway and oxygen, the client will rapidly deteriorate regardless of other medications.
3
Determine the pharmacological prioritization for anaphylactic shock.
Epinephrine is the first-line drug (Circulation/Breathing support), followed by IV fluids to correct the distributive shock, and then adjunctive medications.
Epinephrine directly reverses life-threatening bronchospasm and vasodilation. IV fluids restore intravascular volume. Diphenhydramine and steroids are slow-acting and secondary.

Anahtar Kavram

Prioritization of emergency interventions in anaphylactic shock
Tahmini Süre:1m 30s
Soru 1925Soru →

A client undergoing treatment for gastrointestinal toxicity is receiving total parenteral nutrition (TPN) through a single-lumen peripherally inserted central catheter. The client experiences a sudden onset of severe nausea, and the acute care team prescribes an immediate dose of intravenous ondansetron. Which action represents the safest medication administration practice for this client?

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Cevap: Obtain an alternative peripheral venous access site to deliver the prescribed antiemetic.

Cevap

Obtain an alternative peripheral venous access site to deliver the prescribed antiemetic.
Total parenteral nutrition (TPN) formulas are highly complex and prone to chemical precipitation when mixed with other pharmacological agents. Standard nursing practice dictates that TPN must run through a strictly dedicated intravenous line. Because the client only has a single-lumen central catheter, the nurse cannot safely use this line for any other infusions or IV push medications. Therefore, establishing a separate peripheral venous access site is the only safe method to administer the prescribed antiemetic without risking line occlusion, bloodstream infection, or glycemic instability.

Adım Adım Çözüm

1
Analyze the current intravenous setup
The client has a single-lumen central catheter dedicated to total parenteral nutrition (TPN).
Identifying the type of access and current infusion is necessary to determine if it is safe to use for secondary medications.
2
Evaluate the compatibility principles for TPN
TPN contains a complex mixture of amino acids, dextrose, and lipids that is highly incompatible with most medications and requires a strictly dedicated line.
Mixing medications with TPN poses severe risks of chemical precipitation, catheter occlusion, and bloodstream infections.
3
Determine the safest method for medication administration
A new, separate peripheral IV line must be established to administer the ondansetron.
Since the existing line cannot be interrupted or shared, an alternative access point is the only safe intervention to deliver the antiemetic.

Anahtar Kavram

Total parenteral nutrition (TPN) requires a dedicated intravenous line. Medications should never be mixed with TPN or administered in the same lumen due to high risks of incompatibility, precipitation, and infection.
Soru 1926Soru →

A nurse enters the room of a client receiving total parenteral nutrition via a right subclavian central venous catheter. The nurse discovers that the intravenous tubing has completely disconnected from the catheter hub. The client is suddenly extremely anxious, gasping for air, and cyanotic, with a rapidly dropping blood pressure. Arrange the following emergency nursing actions in the priority sequence they should be performed. (Place the most immediate priority action at the top).

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Cevap

The correct emergency sequence is to first clamp the catheter to stop the source of the air leak, then position the client in the left lateral Trendelenburg position to trap the embolus, administer high-flow oxygen to treat hypoxia, activate the rapid response team for emergency assistance, and finally monitor hemodynamics to prepare for advanced support.
The priority in managing a central venous air embolism is to immediately stop the source of air entrainment by clamping the disconnected catheter. Following this, positioning the client in the left lateral Trendelenburg position (Durant's maneuver) is critical because it utilizes gravity to trap the air bubble in the apex of the right ventricle, preventing it from migrating into the pulmonary artery and causing obstructive shock. Once the physical source and anatomical risks are mitigated, applying 100% oxygen treats the resulting hypoxia and accelerates the resorption of nitrogen gas from the embolus. After these immediate life-saving actions are complete, the nurse must activate the rapid response team to escalate care, followed by continuous assessment and preparation of vasopressors to manage ongoing hemodynamic instability.

Adım Adım Çözüm

1
Clamp the central venous catheter immediately.
Halts the continuous entry of room air into the central venous system.
Addressing the immediate source of the crisis prevents the air embolus from expanding and causing further physiological collapse.
2
Place the client in a left lateral Trendelenburg position.
Displaces the intravascular air bubble away from the pulmonary valve.
Gravity forces the lighter air to rise into the apex of the right atrium and right ventricle, preventing a fatal right ventricular outflow tract obstruction into the pulmonary circulation.
3
Administer 100% oxygen via a non-rebreather mask.
Maximizes alveolar oxygen concentration.
Reverses profound tissue hypoxia and creates a diffusion gradient that pulls nitrogen out of the trapped air embolus, accelerating its resorption.
4
Activate the rapid response team and notify the healthcare provider.
Mobilizes critical care providers and advanced resuscitation equipment.
Definitive medical intervention and potential transfer to an intensive care unit are required immediately after independent nursing actions are completed.
5
Assess vital signs and prepare for hemodynamic support.
Establishes baseline clinical parameters post-intervention.
Identifies profound obstructive shock that may require immediate vasopressor administration or fluid volume resuscitation.

Anahtar Kavram

Management of Central Venous Air Embolism and Obstructive Shock
Tahmini Süre:2m 0s
Soru 1927Soru →

An emergency department nurse is evaluating a young adult client who presented with a severe asthma exacerbation. Upon arrival, the client was highly agitated, using accessory muscles to breathe, and had a respiratory rate of 3838 breaths/min. The initial arterial blood gas (ABG) revealed: pH 7.487.48, PaCO2\text{PaCO}_2 2828 mm Hg, and PaO2\text{PaO}_2 6868 mm Hg. After one hour of continuous bronchodilator therapy, the nurse observes that the client has become lethargic and the respiratory rate has decreased to 1414 breaths/min. A repeat ABG reveals: pH 7.297.29, PaCO2\text{PaCO}_2 5656 mm Hg, and PaO2\text{PaO}_2 5252 mm Hg. Which of the following is the priority nursing action to reduce the risk of cardiopulmonary arrest?

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Cevap: Activate the rapid response team and prepare equipment for immediate endotracheal intubation.

Cevap

The priority action is to activate the rapid response team and prepare for immediate endotracheal intubation.
The correct answer identifies that the client has progressed to respiratory failure. The initial hyperventilation (respiratory alkalosis) has been replaced by hypoventilation (respiratory acidosis) due to severe muscle fatigue, evidenced by the drop in respiratory rate, rise in carbon dioxide, and lethargy. This is a medical emergency requiring rapid intubation and mechanical ventilation to save the client's life.

Adım Adım Çözüm

1
Analyze the initial assessment findings.
The client presented with severe distress, a high respiratory rate (3838 breaths/min), and respiratory alkalosis (pH 7.487.48, PaCO2\text{PaCO}_2 2828 mm Hg).
Early in an asthma attack, hyperventilation causes excessive exhalation of carbon dioxide, leading to a compensatory respiratory alkalosis.
2
Evaluate the subsequent clinical changes and repeat ABG results.
The client became lethargic with a decreased respiratory rate (1414 breaths/min). The repeat ABG shows respiratory acidosis (pH 7.297.29, PaCO2\text{PaCO}_2 5656 mm Hg) and worsening hypoxemia (PaO2\text{PaO}_2 5252 mm Hg).
These changes indicate profound respiratory muscle fatigue. The client is no longer able to hyperventilate to blow off carbon dioxide, resulting in rapid CO2 retention and severe hypoxia.
3
Determine the priority nursing intervention based on the physiological trend.
The nurse must prepare for definitive airway management via endotracheal intubation.
Lethargy and rising PaCO2\text{PaCO}_2 in a previously hyperventilating asthmatic client are ominous signs of impending respiratory arrest that require immediate mechanical ventilation.

Anahtar Kavram

In severe asthma, a transition from respiratory alkalosis to respiratory acidosis accompanied by lethargy and a dropping respiratory rate indicates impending respiratory failure requiring immediate intubation.
Tahmini Süre:1m 30s
Soru 1928Soru →

A nurse enters the room of a client receiving intravenous fluids via a subclavian central venous catheter. The nurse discovers that the intravenous tubing has become inadvertently disconnected from the catheter hub. The client suddenly reports severe chest pain and shortness of breath, and their heart rate increases to 128 beats per minute. Which of the following is the most appropriate initial nursing action?

Cevabı ve açıklamayı göster

Cevap: Clamp the catheter hub and immediately place the client in a left lateral Trendelenburg position.

Cevap

The correct action is to clamp the catheter hub and immediately place the client in a left lateral Trendelenburg position.
The clinical scenario of a disconnected central line accompanied by sudden dyspnea and tachycardia is the classic presentation of an acute air embolism. To reduce the risk of cardiopulmonary collapse, the nurse must immediately clamp the catheter to prevent further air entry. Placing the client in the left lateral Trendelenburg position utilizes gravity to trap the air in the apex of the right ventricle, preventing it from occluding the pulmonary artery.

Adım Adım Çözüm

1
Identify the clinical emergency based on the presentation.
The disconnected central venous catheter paired with sudden respiratory distress and tachycardia strongly indicates a suspected air embolism.
Recognizing life-threatening complications quickly dictates the priority of nursing care.
2
Determine the physiological goal of the intervention.
The goal is to stop further air from entering the circulatory system and to trap the air that has already entered before it reaches the pulmonary or cerebral circulation.
Air entering the right atrium and ventricle can block blood flow to the lungs, leading to rapid cardiovascular collapse.
3
Select the appropriate action to achieve this goal.
Clamping the catheter prevents further air entry. Placing the client on their left side with the head down (left lateral Trendelenburg) traps the air bubble in the apex of the right ventricle, keeping it away from the pulmonary valve.
This specific combination of mechanical closure and gravitational positioning is the definitive first-line emergency intervention for an air embolism.

Anahtar Kavram

Management of Central Venous Catheter Complications (Air Embolism)
Tahmini Süre:1m 0s
Soru 1929Soru →

A nurse is preparing to deliver an intermittent antibiotic infusion into an existing continuous intravenous line utilizing the backpriming technique. Arrange the following actions in the correct chronological sequence.

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Cevap

The correct sequence is: Confirm compatibility, close the clamp and spike the bag, scrub the injection port, connect and lower the container to backprime, and finally hang the container above the primary bag and program the pump.
Safe intravenous administration requires a systematic approach. The nurse must first ensure compatibility between the primary and secondary fluids. Next, the equipment is prepared by closing the secondary clamp and spiking the bag. Aseptic technique is then maintained by scrubbing the primary port before connection. Connecting the tubing and lowering the secondary bag allows backpriming, which effectively clears air from the line without wasting any medication. Finally, hanging the secondary bag higher than the primary bag ensures the secondary medication infuses first due to gravity, and the pump is programmed to deliver the prescribed dose.

Adım Adım Çözüm

1
Confirm the compatibility of the prescribed antibiotic with the current continuous intravenous fluid.
Ensures the two solutions will not react or precipitate.
Patient safety is prioritized by avoiding dangerous chemical incompatibilities within the infusion system.
2
Close the roller clamp on the new tubing and spike the antibiotic fluid container.
The secondary equipment is prepared without spilling medication.
Closing the clamp prevents the medication from running out immediately upon spiking the container.
3
Scrub the uppermost injection port on the primary IV tubing with an antimicrobial swab.
The access point is disinfected.
Strict aseptic technique prevents the introduction of pathogens into the patient's bloodstream.
4
Connect the new tubing to the injection port and lower the antibiotic container below the primary bag to backprime.
Air is cleared from the secondary tubing.
Backpriming uses the primary fluid to clear the line, preventing both air embolisms and the loss of any medication.
5
Hang the antibiotic container on the pole above the primary bag and program the infusion pump.
The setup is complete and ready to infuse.
The secondary bag must be physically higher than the primary bag to exert greater hydrostatic pressure, allowing it to infuse first.

Anahtar Kavram

Intravenous Piggyback (IVPB) Administration and Backpriming
Soru 1930Soru →

An adult client presents to the emergency department reporting severe, intractable vomiting for the past four days. The client is lethargic and exhibits shallow respirations, bilateral calf cramping, and tingling around the mouth. An arterial blood gas (ABG) analysis reveals a pH of 7.55, a PaCO2 of 44 mm Hg, and an HCO3- of 36 mEq/L. To prevent the development of a life-threatening complication associated with these clinical findings, which intervention is the highest priority for the nurse to implement?

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Cevap: Establish continuous electrocardiogram (ECG) monitoring and prepare for intravenous potassium replacement.

Cevap

Establish continuous electrocardiogram (ECG) monitoring and prepare for intravenous potassium replacement.
The client's ABG results indicate metabolic alkalosis (pH > 7.45, HCO3- > 26 mEq/L) resulting from severe gastric acid loss due to prolonged vomiting. This condition causes an intracellular shift of potassium, leading to hypokalemia, which is evidenced by the client's calf cramping and paresthesia. Hypokalemia places the client at an immediate, life-threatening risk for cardiac dysrhythmias. Therefore, the highest priority action to reduce this risk is to initiate continuous cardiac telemetry and prepare for potassium replacement.

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) values.
The pH is 7.55 (alkalosis), PaCO2 is 44 mm Hg (normal range), and HCO3- is 36 mEq/L (high), which confirms uncompensated metabolic alkalosis.
Accurate interpretation of diagnostic data is required to identify the primary physiological disturbance.
2
Correlate the client's clinical symptoms with the underlying pathophysiology.
The history of prolonged vomiting explains the significant loss of gastric acid (hydrogen ions). The calf cramping and perioral tingling strongly suggest concurrent hypokalemia and hypocalcemia, which are common and dangerous complications of metabolic alkalosis due to intracellular fluid shifts.
Connecting observable symptoms to the acid-base imbalance helps identify the highest priority physiological risks.
3
Determine the highest priority intervention to reduce physiological risk.
Hypokalemia poses a severe, immediate risk for fatal cardiac dysrhythmias. Initiating continuous ECG monitoring and preparing for electrolyte replacement addresses this life-threatening potential.
In accordance with prioritization frameworks, interventions that prevent immediate circulatory collapse or fatal arrhythmias must take precedence.

Anahtar Kavram

Identifying complications of metabolic alkalosis and mitigating the risk of hypokalemia-induced cardiac dysrhythmias.
Soru 1931Soru →

At 0800, a nurse responds to a monitoring alarm for an adult client who is 36 hours post-operative from an open reduction and internal fixation of a fractured right femur. The client appears highly restless, confused, and is expectorating small amounts of blood-tinged sputum. Vital signs reveal a heart rate of 126 beats/min, a respiratory rate of 34 breaths/min, blood pressure of 148/88 mm Hg, and an oxygen saturation of 84% on room air. An arterial blood gas (ABG) analysis indicates a pH of 7.53, PaCO2 of 27 mm Hg, HCO3 of 23 mEq/L, and PaO2 of 52 mm Hg. Which intervention is the priority for the nurse to implement?

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Cevap: Apply a non-rebreather oxygen mask at 15 L/min.

Cevap

Apply a non-rebreather oxygen mask at 15 L/min.
The correct answer directly addresses the most immediate threat to the client's life: severe hypoxemia (PaO2 of 52 mm Hg). The client's restlessness, confusion, and rapid breathing are compensatory mechanisms for this profound lack of oxygen, likely resulting from a fat embolism or pulmonary embolism after the femur fracture. Based on the ABC (Airway, Breathing, Circulation) framework, restoring oxygenation with high-flow supplemental oxygen is the absolute highest priority.

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) results and pulse oximetry.
The client has uncompensated respiratory alkalosis (high pH, low PaCO2) with severe hypoxemia (PaO2 52 mm Hg, SpO2 84%).
To identify the primary physiological derangement causing the acute symptoms.
2
Evaluate the clinical presentation in the context of the client's surgical history.
The client is restless, tachypneic, tachycardic, and has blood-tinged sputum 36 hours after a long bone fracture, strongly suggesting a fat embolism syndrome or pulmonary embolism.
To correlate the laboratory values with the physical symptoms of acute respiratory distress.
3
Apply the ABC (Airway, Breathing, Circulation) prioritization framework.
Oxygenation must be addressed immediately before moving to symptom management or diagnostic testing.
To determine the single most critical and immediate nursing action to prevent physiological collapse.

Anahtar Kavram

Prioritizing oxygenation in acute hypoxemic respiratory failure
Soru 1932Soru →

A client admitted with severe lobar pneumonia is receiving targeted intravenous antibiotic therapy. During hourly rounds, the nurse observes that the client has become increasingly agitated and diaphoretic. Current vital signs include a temperature of 39.2∘C39.2^\circ\text{C} (102.6∘F102.6^\circ\text{F}), a heart rate of 126126 beats per minute, a respiratory rate of 3030 breaths per minute, and a blood pressure of 94/68 mm Hg94/68\text{ mm Hg}.

An arterial blood gas (ABG) analysis is drawn and reveals the following results:

ParameterResult
pH\text{pH}7.287.28
PaCO2\text{PaCO}_231 mm Hg31\text{ mm Hg}
HCO3−\text{HCO}_3^-14 mEq/L14\text{ mEq/L}

Based on these assessment findings, which physiological alteration is the client most likely experiencing?

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Cevap: Systemic tissue hypoperfusion resulting in metabolic acidosis

Cevap

The correct answer is systemic tissue hypoperfusion resulting in metabolic acidosis. This is evidenced by the client's progression to early septic shock, characterized by agitation, tachycardia, borderline hypotension, and an ABG confirming a primary metabolic acidosis.
The correct answer identifies that the client is experiencing systemic tissue hypoperfusion resulting in a metabolic acidosis. The client's presentation of a severe infection combined with new-onset agitation, tachycardia, and a blood pressure of 94/68 mm Hg are classic indicators of early septic shock. As tissues become deprived of oxygen, they shift to anaerobic metabolism, which rapidly produces lactic acid. This accumulation of lactic acid consumes bicarbonate buffers, causing the primary metabolic acidosis seen on the ABG (pH 7.28, HCO3- 14 mEq/L).

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) results to determine the primary acid-base imbalance.
The pH of 7.28 indicates acidemia. The low HCO3- (14 mEq/L) matches the acidic pH, confirming a primary metabolic acidosis. The PaCO2 (31 mm Hg) is low, indicating a partial respiratory compensation.
Accurate ABG interpretation is the first step in diagnosing the client's internal physiological state.
2
Evaluate the current vital signs and clinical presentation for signs of physiological deterioration.
The client is tachycardic (126 bpm), tachypneic (30 breaths/min), hypotensive relative to normal parameters (94/68 mm Hg), and exhibiting an altered mental status (agitation).
Vital sign trends provide critical information about systemic tissue perfusion and end-organ function.
3
Synthesize the laboratory data and clinical findings to identify the underlying pathophysiological process.
The combination of an active infection (pneumonia), signs of poor systemic perfusion, and a metabolic acidosis points directly to lactic acid accumulation from anaerobic metabolism, indicating early septic shock.
Connecting lab values with physical assessment findings enables the nurse to anticipate the correct medical emergency and prioritize life-saving care.

Anahtar Kavram

Septic shock presents with signs of systemic hypoperfusion (hypotension, altered mental status, tachycardia), which forces cells into anaerobic metabolism, leading to lactic acid production and a subsequent metabolic acidosis.
Soru 1933Soru →

A triage nurse is assessing a client with a history of chronic kidney disease who missed their last two hemodialysis sessions. The client reports profound muscle weakness and tingling in the extremities. An immediate electrocardiogram (ECG) reveals a prolonged PR interval, a widened QRS complex, and tall, peaked T waves. The serum potassium level is reported as 7.4 mEq/L. Which of the following prescribed interventions should the nurse implement first?

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Cevap: Administer intravenous calcium gluconate.

Cevap

Administer intravenous calcium gluconate.
The client is experiencing a life-threatening physiological emergency due to severe hyperkalemia. The widening of the QRS complex indicates that the high potassium level is disrupting ventricular depolarization, placing the client at imminent risk for a lethal dysrhythmia, such as ventricular fibrillation or asystole. The absolute highest priority is to stabilize the myocardial cell membrane. Intravenous calcium gluconate works rapidly (within minutes) to raise the threshold potential of cardiac myocytes, protecting the heart. Once the heart is protected, the nurse will then administer agents to shift potassium into the cells (insulin/dextrose) and remove it from the body (hemodialysis or sodium polystyrene sulfonate).

Adım Adım Çözüm

1
Identify the clinical emergency from the assessment data.
The client has severe hyperkalemia (7.4 mEq/L) with significant cardiac manifestations, including a widened QRS complex and peaked T waves.
A widened QRS complex indicates severely impaired ventricular depolarization, placing the client at imminent risk for lethal dysrhythmias such as ventricular fibrillation or asystole.
2
Determine the physiological priority.
Protecting the heart from lethal dysrhythmias takes precedence over shifting or removing the excess potassium.
According to the ABCs (Airway, Breathing, Circulation) and survival principles, preventing cardiac arrest is the most immediate life-saving action.
3
Select the appropriate intervention that matches the priority.
Intravenous calcium gluconate is identified as the correct first action.
Calcium directly antagonizes the membrane-depolarizing effects of potassium, stabilizing the myocardium within minutes.

Anahtar Kavram

Prioritization of life-threatening hyperkalemia with cardiac manifestations.
Soru 1934Soru →

A client is recovering in the surgical step-down unit 2424 hours after a right-sided pneumonectomy for lung cancer. The client is receiving oxygen at 22 L/min via nasal cannula. The client reports incisional pain of 66 on a 00-1010 scale and is taking shallow breaths. The nurse evaluates the most recent arterial blood gas (ABG) results:

ParameterClient ResultReference Range
pH7.327.327.357.35 - 7.457.45
PaCO2_25454 mm Hg3535 - 4545 mm Hg
HCO3−_3^-2626 mEq/L2222 - 2626 mEq/L
PaO2_27272 mm Hg8080 - 100100 mm Hg

Based on these clinical findings, which action should the nurse take first to reduce the client's risk of respiratory compromise?

Cevabı ve açıklamayı göster

Cevap: Administer the prescribed analgesic and encourage the use of an incentive spirometer.

Cevap

The priority action is to administer the prescribed analgesic and encourage the use of an incentive spirometer to improve ventilation.
The arterial blood gas results demonstrate uncompensated respiratory acidosis (low pH, elevated PaCO2, normal HCO3-), indicating that the client is hypoventilating. Postoperative incisional pain frequently causes clients to take shallow breaths (splinting), which leads to carbon dioxide retention. The priority action is to treat the pain with analgesics so the client can effectively participate in deep breathing exercises and incentive spirometry. This will increase alveolar ventilation, blow off the excess carbon dioxide, and correct the acidosis.

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) results to determine the primary acid-base imbalance.
The pH is low (acidosis) and the PaCO2 is elevated, indicating uncompensated respiratory acidosis.
Identifying the physiological state is required to select the correct targeted intervention.
2
Relate the ABG abnormality to the client's clinical presentation.
The respiratory acidosis is caused by hypoventilation, which is secondary to shallow breathing (splinting) from uncontrolled incisional pain.
Understanding the root cause of the hypoventilation directs the therapeutic action toward pain management.
3
Evaluate the proposed interventions against safety protocols for a post-pneumonectomy client.
Positioning on the unoperated side is unsafe; administering pain medication and promoting lung expansion is safe and directly addresses the root cause of the acidosis.
This ensures the selected action reduces risk without introducing new life-threatening complications.

Anahtar Kavram

Postoperative respiratory acidosis and post-pneumonectomy safety precautions
Soru 1935Soru →

A nurse evaluates the arterial blood gas (ABG) results for a client admitted with acute respiratory distress secondary to severe pneumonia. The laboratory report shows the following values:

ParameterValue
pH7.30
PaCO262 mm Hg
PaO258 mm Hg
HCO330 mEq/L

Which acid-base imbalance do these findings indicate?

Cevabı ve açıklamayı göster

Cevap: Partially compensated respiratory acidosis

Cevap

The findings indicate partially compensated respiratory acidosis.
The combination of a low pH (acidosis) and a high PaCO2 confirms a primary respiratory acidosis. The elevated HCO3 demonstrates that the kidneys are actively retaining bicarbonate to buffer the excess acid. Because the pH remains outside the normal range (7.35-7.45), this physiological adaptation is defined as partially compensated.

Adım Adım Çözüm

1
Analyze the pH to determine if the client is in a state of acidosis or alkalosis.
The pH is 7.30, which falls below the normal range of 7.35 to 7.45.
A pH below 7.35 defines acidemia (acidosis), establishing the primary direction of the imbalance.
2
Evaluate the PaCO2 and HCO3 to identify the primary cause of the acidosis.
The PaCO2 is elevated at 62 mm Hg (normal 35-45 mm Hg), and the HCO3 is elevated at 30 mEq/L (normal 22-26 mEq/L).
Because the PaCO2 indicates acidity and matches the acidic pH, the primary problem is respiratory in nature.
3
Assess the degree of compensation by checking the opposite parameter and the final pH.
The HCO3 is elevated outside its normal range, but the pH remains abnormal.
An elevated HCO3 shows the kidneys are retaining base to compensate for the high acid level. However, because the pH has not yet returned to a normal value, the compensation is only partial.

Anahtar Kavram

Interpretation of Arterial Blood Gases (ABGs) and compensatory mechanisms.

Alternatif Yöntem

The Tic-Tac-Toe or R.O.M.E. (Respiratory Opposite, Metabolic Equal) method can visually organize these values. For R.O.M.E.: pH is down, PaCO2 is up (Opposite = Respiratory). Since HCO3 is also up (trying to balance the acid) but pH is still abnormal, it is partially compensated.
Tahmini Süre:1m 0s
Soru 1936Soru →

A nurse is reviewing a new prescription for a client with a serum potassium level of 2.8 mEq/L (2.8 mmol/L). The prescription reads: "Potassium chloride 40 mEq in 100 mL 0.9% sodium chloride IV to infuse over 4 hours." The client has a 20-gauge peripheral intravenous catheter in the left cephalic vein. Which of the following is the most appropriate action by the nurse?

Cevabı ve açıklamayı göster

Cevap: Contact the healthcare provider to request diluting the medication in a larger volume of intravenous fluid.

Cevap

The correct action is to contact the healthcare provider to request diluting the medication in a larger volume of intravenous fluid.
The correct answer identifies that the prescribed concentration is too high for peripheral administration. The maximum recommended concentration for peripheral administration of intravenous potassium chloride is typically 10 mEq10 \text{ mEq} per 100 mL100 \text{ mL}. A concentration of 40 mEq40 \text{ mEq} in 100 mL100 \text{ mL} is highly hyperosmolar and will cause severe pain and chemical phlebitis. The nurse must intervene by requesting the dose be diluted in a larger volume of fluid or by establishing a central venous catheter.

Adım Adım Çözüm

1
Analyze the prescription's medication concentration.
The prescription contains 40 mEq40 \text{ mEq} of potassium chloride in 100 mL100 \text{ mL} of fluid.
To determine if the concentration is safe for the designated route of administration.
2
Evaluate the route of administration.
The client has a peripheral intravenous line in the cephalic vein.
Different vascular access devices have different tolerances for osmolarity and chemical irritation.
3
Compare the prescribed concentration against safety guidelines for peripheral lines.
The maximum safe peripheral concentration is typically 10 mEq10 \text{ mEq} per 100 mL100 \text{ mL}. The prescribed 40 mEq40 \text{ mEq} per 100 mL100 \text{ mL} is highly concentrated.
Hyperosmolar and highly concentrated potassium solutions cause severe chemical phlebitis and tissue damage if given peripherally.
4
Determine the appropriate nursing intervention.
The nurse must withhold the medication and contact the provider for a safer prescription (e.g., diluting the dose in 500 mL500 \text{ mL} or 1000 mL1000 \text{ mL} of fluid).
Nurses are responsible for verifying the safety of all medication prescriptions prior to administration.

Anahtar Kavram

Intravenous Potassium Chloride Safety Guidelines
Soru 1937Soru →

A surgical nurse is evaluating a client who is 4 hours post-operative following a total abdominal hysterectomy. Which of the following assessment findings are early clinical indicators of developing hypovolemic shock? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Heart rate increase from 75 to 118 beats per minute; Sudden onset of unexplained restlessness and apprehension; Respiratory rate increase from 14 to 24 breaths per minute

Cevap

The correct findings that indicate early hypovolemic shock are an increased heart rate, the sudden onset of restlessness and apprehension, and an increased respiratory rate.
The correct selections represent the body's early compensatory mechanisms for volume loss. Sympathetic nervous system activation causes tachycardia and tachypnea to maintain oxygen delivery, while decreased cerebral perfusion manifests early as restlessness and apprehension.

Adım Adım Çözüm

1
Analyze the pathophysiology of early hypovolemic shock.
Recognize that the initial physiological response involves sympathetic nervous system activation.
Compensatory mechanisms attempt to immediately maintain cardiac output and tissue perfusion.
2
Evaluate each assessment finding against early compensatory signs.
Identify tachycardia, tachypnea, and neurological changes (restlessness) as early signs.
These specific signs reflect the body's immediate attempt to oxygenate and supply vital organs like the brain.
3
Differentiate early signs from late signs or other types of shock.
Eliminate widening pulse pressure and warm, flushed skin from the correct selections.
Hypovolemic shock causes a narrowed pulse pressure and cool, clammy skin due to peripheral vasoconstriction.

Anahtar Kavram

Early Indicators of Hypovolemic Shock
Soru 1938Soru →

A nurse is assessing a client who underwent an exploratory laparotomy three days ago. The client suddenly coughs and reports a sensation of 'giving way' in the abdomen. The nurse inspects the surgical site and observes that a loop of bowel is protruding from the incision. Arrange the following nursing interventions in the correct chronological sequence to mitigate the risk of severe complications.

Öğeleri doğru sıraya koymak için sürükleyin

Cevabı ve açıklamayı göster

Cevap

The correct sequence is to first stay with the client and call for help, then position the client to reduce abdominal tension, cover the eviscerated organs with sterile saline dressings, assess vital signs for shock, and finally prepare the client for emergency surgery.
Wound evisceration is a critical surgical complication requiring rapid, sequential intervention to reduce risk. The immediate priority is maintaining client safety by staying with them and calling for assistance. The next priority is anatomical positioning (low Fowler's with flexed knees) to decrease abdominal tension and prevent further evisceration. Once sterile supplies are brought to the room, the exposed bowel must be protected from drying and infection using saline-soaked sterile dressings. After securing the local wound site, the nurse assesses systemic status via vital signs to monitor for shock, and then prepares the client for definitive surgical repair.

Adım Adım Çözüm

1
Stay with the client and call for help.
Assistance is secured while the client is continuously monitored.
Leaving the client increases anxiety and risks further injury; help is needed to gather emergency supplies.
2
Place the client in a low Fowler's position with flexed knees.
Abdominal muscle tension is minimized.
Reducing intra-abdominal pressure prevents further evisceration of the intestines.
3
Cover the viscera with sterile, saline-moistened dressings.
The exposed organs are protected from the environment.
Moisture prevents tissue necrosis, and sterile technique reduces the risk of massive infection.
4
Assess vital signs and oxygenation.
Baseline physiological status during the emergency is established.
Monitoring for tachycardia and hypotension helps detect the onset of shock.
5
Prepare for emergency surgical intervention.
The client is readied for transport to the operating room.
Evisceration requires immediate surgical closure to restore physiological integrity.

Anahtar Kavram

Wound Evisceration Emergency Management
Tahmini Süre:1m 30s
Soru 1939Soru →

A 64-year-old client is being monitored on the medical-surgical unit 2 hours after a flexible bronchoscopy with transbronchial biopsy. Which assessment findings indicate a developing physiological complication that requires immediate nursing intervention? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Heart rate increased from a baseline of 72 to 118 beats per minute; Asymmetrical chest wall expansion with absent breath sounds on the right side; Oxygen saturation reading of 87% on room air

Cevap

The findings that indicate a developing complication are the increased heart rate (tachycardia), asymmetrical chest wall expansion with absent breath sounds, and an oxygen saturation of 87%.
Tachycardia is an early compensatory sign of physiological stress, hemorrhage, or hypoxemia. Asymmetrical chest wall expansion and absent breath sounds on the operative side are classic indicators of a pneumothorax, which is a major complication of a transbronchial biopsy. An oxygen saturation of 87% on room air indicates significant hypoxemia requiring immediate oxygen therapy and medical evaluation.

Adım Adım Çözüm

1
Identify the procedure performed and its associated physiological risks.
The client underwent a flexible bronchoscopy with transbronchial biopsy. High-risk complications include pneumothorax, hemorrhage, bronchospasm, and hypoxemia.
Understanding the specific procedure guides the nurse in anticipating and prioritizing potential life-threatening complications.
2
Differentiate between expected post-procedure findings and pathological changes.
Blood-tinged sputum is a normal expectation due to the biopsy trauma. Normal ABG values (pH 7.42, PaCO2 38) and adequate urine output (45 mL/hr) indicate physiological stability.
Recognizing expected findings prevents unnecessary alarm and allows the nurse to focus on true indications of decompensation.
3
Analyze the remaining assessment findings for signs of physiological decompensation.
A sudden onset of tachycardia (HR 118), absent breath sounds with asymmetrical expansion, and hypoxemia (SpO2 87%) are critical indicators of hemorrhage or pneumothorax.
These abnormal findings represent life-threatening complications that require immediate escalation of care and intervention.

Anahtar Kavram

Reduction of Risk Potential: Recognition of Post-Procedure Complications
Soru 1940Soru →

A nurse is assessing a client who has had a nasogastric (NG) tube connected to continuous low wall suction for the past 48 hours due to a small bowel obstruction. Which of the following clinical and laboratory findings indicate that the client is experiencing a primary acid-base imbalance associated with this therapy? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Arterial blood pH of 7.52; Decreased respiratory rate of 10 breaths per minute

Cevap

The correct findings are an arterial blood pH of 7.52 and a decreased respiratory rate of 10 breaths per minute.
Continuous nasogastric suctioning depletes the stomach of hydrochloric acid, leading to a state of metabolic alkalosis. This is evidenced by an elevated arterial blood pH (greater than 7.45). To compensate for this alkalotic state, the respiratory system slows down (hypoventilation) to retain carbon dioxide, which forms carbonic acid in the blood and helps bring the pH back toward a normal range. Therefore, both the elevated pH and the decreased respiratory rate are expected findings.

Adım Adım Çözüm

1
Identify the primary physiological consequence of continuous nasogastric suctioning.
The client is losing significant amounts of gastric acid (hydrochloric acid).
Gastric secretions are highly acidic; excessive removal leads to a deficit of acid and a relative excess of base in the extracellular fluid.
2
Determine the specific acid-base imbalance caused by this loss.
The loss of stomach acid results in metabolic alkalosis.
Metabolic alkalosis is defined by a primary increase in bicarbonate or a loss of hydrogen ions, presenting with a pH greater than 7.45.
3
Identify the expected physiological compensation for this state.
The lungs will attempt to compensate by hypoventilating.
Decreasing the respiratory rate retains carbon dioxide, which acts as an acid in the blood, attempting to neutralize the alkalosis and lower the pH.
4
Evaluate the options against these findings.
An elevated pH and a decreased respiratory rate match the expected primary imbalance and compensatory response.
Options presenting acidosis (low bicarbonate) or hyperventilation (low carbon dioxide) represent misinterpretations of the imbalance and its compensation.

Anahtar Kavram

Continuous removal of gastric acid via nasogastric suctioning leads to metabolic alkalosis, characterized by an elevated pH, elevated bicarbonate, and a compensatory decrease in respiratory rate to retain carbon dioxide.
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Physiological Integrity Alıştırma Soruları — NCLEX-RN — Sayfa 97 | Examkin