Physiological Integrity

1960 questions

Question 1361Question →

A nurse is monitoring a client who is at risk for internal hemorrhage following a percutaneous liver biopsy. Which of the following vital sign trends represents the earliest physiological adaptation to intravascular fluid loss?

Show answer & explanation

Answer: Narrowing of the pulse pressure

Answer

The earliest physiological adaptation to intravascular fluid loss is a narrowing of the pulse pressure.
In the initial stages of hypovolemia or hemorrhage, the body compensates by activating the sympathetic nervous system. This causes peripheral vasoconstriction, which increases systemic vascular resistance. As a result, the diastolic blood pressure rises while the systolic pressure is temporarily maintained, leading to a narrowed pulse pressure. This is one of the earliest detectable physiological adaptations to fluid loss, occurring even before a significant drop in systolic blood pressure.

Step-by-Step Solution

1
Identify the primary clinical risk for the client.
The client is at risk for hemorrhage (intravascular fluid loss) following a liver biopsy.
Understanding the primary risk determines which physiological changes the nurse should monitor for.
2
Recall the body's initial compensatory mechanisms for fluid loss.
The sympathetic nervous system activates, causing tachycardia and peripheral vasoconstriction.
These mechanisms attempt to maintain cardiac output and vital organ perfusion before total blood volume drops critically low.
3
Determine how vasoconstriction affects blood pressure readings.
Vasoconstriction increases systemic vascular resistance, which primarily elevates the diastolic blood pressure, leading to a narrowed pulse pressure before the systolic pressure significantly drops.
This makes a narrowed pulse pressure one of the earliest detectable changes in shock.

Key Concept

Early Signs of Hypovolemic Shock
Question 1362Question →

The nurse receives the shift report for four clients on a medical-surgical unit. Which client should the nurse assess first?

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Answer: A client with a history of gastrointestinal bleeding who has a blood pressure of 108/86 mm Hg, a heart rate of 112 bpm, and new-onset restlessness.

Answer

The client with a history of gastrointestinal bleeding who has a blood pressure of 108/86 mm Hg, a heart rate of 112 bpm, and new-onset restlessness.
The correct answer identifies a client experiencing early compensatory hypovolemic (hemorrhagic) shock. Normal pulse pressure is 30 to 50 mm Hg. This client has a narrowed pulse pressure of 22 mm Hg (108 - 86 = 22). As intravascular volume is lost, peripheral vasoconstriction increases the diastolic blood pressure, narrowing the gap between systolic and diastolic values. The compensatory tachycardia (112 bpm) and early signs of cerebral hypoxia (new-onset restlessness) indicate the client is actively deteriorating and requires immediate intervention.

Step-by-Step Solution

1
Analyze the vital signs of the client with a gastrointestinal bleed.
The pulse pressure is narrow (108 - 86 = 22 mm Hg), heart rate is elevated (112 bpm), and the client is restless.
Identifying subtle vital sign changes is critical. Vasoconstriction narrows the pulse pressure as the body compensates for volume loss, and restlessness indicates early cerebral hypoxia.
2
Evaluate the arterial blood gas (ABG) for the client with chronic bronchitis.
The pH is normal (7.37), but PaCO2 (54 mm Hg) and HCO3 (30 mEq/L) are elevated.
This represents fully compensated respiratory acidosis, an expected baseline state for a client with chronic lung disease, and does not require urgent action.
3
Assess the post-operative findings for the client who had a laparoscopic cholecystectomy.
Right shoulder pain and a low-grade temperature (37.7°C) are present.
Carbon dioxide used to inflate the abdomen during surgery irritates the phrenic nerve, causing referred shoulder pain. Mild fever is a normal surgical inflammatory response.
4
Interpret the aPTT laboratory value for the client on a continuous heparin infusion.
The aPTT is 70 seconds.
The normal therapeutic goal for heparin is 1.5 to 2.5 times the baseline (typically 45-80 seconds). A value of 70 seconds is therapeutic and safe.
5
Compare all client presentations to determine the highest priority.
The client with the gastrointestinal bleed is the most unstable.
Using the ABCs (Airway, Breathing, Circulation) prioritization framework, the client demonstrating early signs of hypovolemic shock represents an immediate, life-threatening circulation issue.

Key Concept

Early Signs of Hypovolemic Shock and Prioritization
Estimated Time:1m 30s
Question 1363Question →

A nurse is preparing to administer a large-volume cleansing enema to an adult client who is experiencing severe constipation. In what order should the nurse perform the following actions? Arrange the steps in the correct sequence.

Drag items to arrange them in the correct order

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Answer

The correct sequence is to position the client on their left side, lubricate the tubing, gently insert the tube while the client exhales, initiate the fluid flow with the bag held at hip level, and finally elevate the bag to the appropriate height.
Safe and effective enema administration requires following a sequence that minimizes discomfort and maximizes fluid retention. The left lateral Sims' position is established first because it aligns with the anatomy of the descending colon. Next, lubrication is applied to prevent mucosal injury. Having the client exhale relaxes the sphincter for smooth insertion of the tube. Once inserted, initiating the flow with the bag at hip level prevents a sudden surge of fluid. Finally, gradually raising the bag to a maximum of 12 to 18 inches provides the appropriate hydrostatic pressure for instillation without causing severe bowel spasms.

Step-by-Step Solution

1
Assist the client into the left lateral Sims' position.
The client's anatomy is aligned for gravity-assisted fluid flow.
This position exposes the anus and allows fluid to flow naturally into the descending colon.
2
Lubricate the distal tip of the rectal tube.
The tube is prepared for smooth insertion.
Water-soluble lubricant prevents tissue trauma and friction against the delicate rectal mucosa.
3
Insert the tube 3 to 4 inches while the client exhales.
The tube passes the internal sphincter safely.
Exhalation relaxes the sphincter, and the depth ensures fluid enters the rectum rather than leaking out.
4
Open the clamp with the container held at hip level.
Fluid begins to flow slowly into the rectum.
Low initial pressure prevents a sudden surge of fluid that could trigger immediate cramping and expulsion.
5
Elevate the container 12 to 18 inches above the anus.
A steady, controlled flow rate is established.
This height provides optimal hydrostatic pressure for a high enema without causing excessive bowel distention.

Key Concept

Safe Administration of a Cleansing Enema
Question 1364Question →

During the administration of a first dose of intravenous ceftriaxone, the client suddenly grasps their neck, stating their throat is closing, and severe expiratory wheezing is noted. Place the following crisis management actions in the correct priority sequence from first to last.

Drag items to arrange them in the correct order

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Answer

The correct priority sequence is to first stop the offending infusion, then secure the airway and oxygenation, followed by activating emergency support, and finally administering pharmacological reversal agents like epinephrine.
In an acute anaphylactic crisis, the physiological adaptation principles dictate that removing the trigger is the absolute first step. This must be immediately followed by securing the airway (ABCs), calling for specialized emergency assistance, and then administering definitive pharmacological treatments like epinephrine.

Step-by-Step Solution

1
Analyze the clinical scenario to determine the primary pathophysiology.
The client is experiencing acute anaphylaxis, a rapid decompensation state characterized by airway compromise.
Recognizing the life-threatening nature of the allergic reaction dictates the speed and prioritization of interventions.
2
Determine the absolute first action to mitigate the cause.
Discontinuing the intravenous antibiotic infusion.
Further exposure to the antigen must be halted immediately to prevent the anaphylactic cascade from worsening.
3
Apply the ABC (Airway, Breathing, Circulation) prioritization framework.
Ensure a patent airway and apply supplemental oxygen.
Airway edema and bronchoconstriction are immediate life threats that take precedence over all other secondary actions.
4
Determine the next step for acquiring advanced medical support.
Activate the facility's rapid response system.
Additional personnel and advanced airway equipment may be required rapidly if the client's condition continues to deteriorate.
5
Provide definitive pharmacological intervention.
Administer intramuscular epinephrine.
Epinephrine is the definitive treatment for anaphylaxis, reversing vasodilation and bronchoconstriction, and should be administered per emergency protocol.

Key Concept

Anaphylaxis crisis management and prioritization
Estimated Time:1m 0s
Question 1365Question →

An adult client with acute decompensated heart failure is admitted to the cardiac intensive care unit. The client is currently receiving a continuous intravenous (IV) infusion of dobutamine at 10 \mug/kg/min10 \text{ \mu g/kg/min} via a dedicated single-lumen peripheral IV catheter. During the shift, the client suddenly develops severe dyspnea, and the nurse auscultates coarse bilateral crackles. The healthcare provider immediately prescribes a stat dose of furosemide 40 mg40 \text{ mg} IV push. Which of the following is the most appropriate action by the nurse?

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Answer: Establish a second peripheral IV access immediately to administer the furosemide.

Answer

Establish a second peripheral IV access immediately to administer the furosemide.
The correct action is to establish a second peripheral IV line. Dobutamine is a critical vasoactive medication with a very short half-life (approximately 2 minutes). Pausing the infusion can lead to rapid hemodynamic deterioration. More importantly, flushing the existing line would inadvertently force a concentrated bolus of dobutamine into the client's bloodstream, risking severe tachycardia and hypertension. Furthermore, furosemide is highly alkaline and physically incompatible with acidic solutions like dobutamine, meaning they cannot be administered simultaneously through a Y-site without causing precipitation. Given the emergent nature of the pulmonary edema, a second IV line is the only safe and effective way to administer the diuretic.

Step-by-Step Solution

1
Analyze the client's current clinical status and existing therapies.
The client has acute pulmonary edema requiring immediate diuresis with IV furosemide, but only has one IV line currently infusing continuous dobutamine.
Understanding the urgency and the limitations of current access is the first step in prioritization.
2
Evaluate the pharmacological properties of the continuous infusion.
Dobutamine is a short-acting vasoactive inotrope. The infusion cannot be paused without causing hemodynamic instability, and the line cannot be flushed without delivering an unsafe bolus to the client.
Vasoactive medications require dedicated lines and strict administration protocols to prevent adverse cardiovascular events.
3
Check the physical compatibility of the two medications.
Furosemide and dobutamine are physically incompatible and will precipitate if mixed in the same line.
Administering incompatible medications concurrently can cause crystal formation, leading to catheter occlusion or embolism.
4
Determine the safest method of administration.
Because the primary line cannot be paused, flushed, or used for concurrent administration, a new peripheral IV line must be initiated.
A secondary access site ensures the rapid delivery of the emergent diuretic without compromising the life-sustaining inotropic support.

Key Concept

Administration Safety for Vasoactive Infusions and IV Incompatibilities

Hints

1
Consider the characteristics of continuous vasoactive infusions. What happens if they are suddenly stopped, or if the tubing is flushed?
2
Think about the physical space inside the IV tubing. If you flush the line with normal saline, where does the dobutamine that was sitting in the tubing go?
3
Because the dobutamine line cannot be flushed (it would cause a dangerous bolus) and the medications are incompatible to mix, you must find an entirely different route to administer the IV push medication safely.

Practice More

Review facility protocols regarding dedicated IV lines for high-alert vasoactive medications and memorize common IV incompatibilities.

Alternative Method

N/A
Estimated Time:1m 15s
Question 1366Question →

An emergency department nurse is caring for an older adult client who presents with profound lethargy and confusion. The client has a known medical history of heart failure with a severely reduced ejection fraction. The client's family reports a three-day history of dysuria, chills, and fever prior to admission.

Current vital signs:
- Blood pressure: 76/48 mm Hg (MAP 57 mm Hg)
- Heart rate: 134 bpm
- Respiratory rate: 32 breaths/min
- Temperature: 39.2 °C (102.6 °F)
- Oxygen saturation: 88% on 4 L/min via nasal cannula

Physical assessment reveals prominent jugular venous distention at a 45-degree angle, cool and mottled extremities, and coarse crackles auscultated bilaterally up to the mid-lung fields.

Arterial Blood Gas (ABG) and laboratory results:
ParameterValue
pH7.25
PaCO228 mm Hg
PaO258 mm Hg
HCO3-12 mEq/L
Lactate6.1 mmol/L

Based on the client's clinical presentation and laboratory data, which of the following prescribed interventions is the highest priority for the nurse to implement?

Show answer & explanation

Answer: Initiate a prescribed norepinephrine infusion to restore mean arterial pressure and tissue perfusion.

Answer

Initiate a prescribed norepinephrine infusion to restore mean arterial pressure and tissue perfusion.
The client is experiencing septic shock complicated by severe left- and right-sided heart failure, evidenced by the dangerously low mean arterial pressure (MAP of 57 mm Hg), elevated lactate (6.1 mmol/L), jugular venous distention, and pulmonary edema (crackles). While the standard initial treatment for septic shock is large-volume intravenous fluid resuscitation, this is strictly contraindicated when there are clear clinical signs of profound fluid overload and cardiogenic failure. Administering fluids would worsen the pulmonary edema and respiratory failure. Furthermore, although the client has pulmonary edema, administering a diuretic like furosemide is contraindicated because it would further decrease the already critically low preload and cardiac output, exacerbating the shock state. Therefore, the most immediate priority is to initiate a vasopressor (norepinephrine) to restore systemic vascular resistance and maintain organ perfusion (MAP > 65 mm Hg) without adding volume that the failing heart cannot pump.

Step-by-Step Solution

1
Analyze the vital signs and physical assessment to determine the client's hemodynamic stability.
The MAP is 57 mm Hg (normal > 65), indicating severe hypoperfusion (shock). Concurrently, JVD and bilateral crackles in a client with a history of heart failure indicate severe fluid overload and pump failure.
Identifying the simultaneous presence of septic shock and acute cardiogenic decompensation is required to avoid harmful standard interventions.
2
Interpret the ABG and laboratory results.
pH is 7.25 (acidosis), HCO3- is 12 mEq/L (metabolic), and PaCO2 is 28 mm Hg (respiratory alkalosis compensation). This is metabolic acidosis with partial respiratory compensation, driven by severe lactic acidosis (lactate 6.1 mmol/L) due to tissue hypoxia.
Accurate ABG interpretation prevents treating the wrong acid-base imbalance (e.g., mistakenly assuming respiratory acidosis due to crackles and hypoxia).
3
Evaluate standard treatment protocols against the specific client presentation to prioritize the first intervention.
Standard sepsis protocol demands fluid boluses. However, signs of acute decompensated heart failure (JVD, crackles) make fluid administration life-threatening. Diuretics are also unsafe due to profound hypotension. Vasopressors (norepinephrine) must be prioritized.
Vasopressors will safely restore systemic vascular resistance and maintain organ perfusion (MAP > 65 mm Hg) without adding volume that the failing heart cannot pump.

Key Concept

Prioritizing hemodynamic support using vasopressors in complex shock scenarios when standard fluid resuscitation is contraindicated due to severe heart failure.
Question 1367Question →

Immediately following a percutaneous liver biopsy, an older adult client is transferred to the medical-surgical unit. The client reports mild discomfort near the insertion site and suddenly exhibits new-onset restlessness. Which intervention is the most appropriate action for the nurse to implement?

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Answer: Assist the client into a right lateral position and place a folded towel directly under the biopsy site.

Answer

The most appropriate immediate action is to assist the client into a right lateral position and place a folded towel directly under the biopsy site.
Following a percutaneous liver biopsy, the client is at a high risk for hemorrhage due to the extreme vascularity of the liver tissue. Placing the client in a right lateral (side-lying) position with a folded towel or small pillow under the costal margin applies direct, sustained external pressure to the liver capsule. This mechanical compression promotes hemostasis, prevents hematoma formation, and is a critical basic care standard for this specific procedure.

Step-by-Step Solution

1
Analyze the procedural risks associated with the client's recent treatment.
A percutaneous liver biopsy involves puncturing a highly vascular organ, making internal hemorrhage the most significant immediate complication.
Understanding procedural risks is essential for prioritizing immediate post-operative nursing care.
2
Evaluate the clinical significance of the client's symptoms.
The client is exhibiting sudden new-onset restlessness, which is a classic early sign of decreased oxygenation to the brain, potentially indicating occult bleeding.
Recognizing early signs of shock ensures timely intervention before the client becomes hemodynamically unstable.
3
Select the intervention that directly addresses the primary physiological risk.
Placing the client on their right side with a towel underneath applies mechanical pressure to the biopsy site, effectively reducing the bleeding risk.
Physical positioning is a primary basic care and comfort measure used to prevent post-procedural complications.

Key Concept

Basic Care and Comfort: Post-Procedure Positioning
Estimated Time:1m 15s
Question 1368Question →

A nurse is preparing to administer a scheduled intravenous (IV) push medication into a client's continuous primary IV fluid infusion. To prevent a potentially life-threatening complication, which action must the nurse perform immediately prior to administration?

Show answer & explanation

Answer: Verify the chemical compatibility of the medication with the primary IV fluid.

Answer

Verify the chemical compatibility of the medication with the primary IV fluid.
Verifying the chemical compatibility of an IV medication with the primary infusing fluid is a fundamental safety principle. If incompatible solutions mix within the IV tubing, they can crystalize or form a precipitate. This solid matter can enter the client's bloodstream and cause a life-threatening complication, such as an embolism.

Step-by-Step Solution

1
Identify the clinical task being performed.
The nurse is preparing to administer an IV push medication into an active, continuous IV line.
Establishing the procedure determines the necessary safety protocols and rules of administration.
2
Determine the priority safety check for mixing an IV medication with a continuous fluid.
The nurse must verify that the two solutions are chemically compatible.
Mixing incompatible medications and IV fluids can cause a precipitate to form in the tubing, leading to a potentially fatal embolus.

Key Concept

Intravenous Medication Safety and Compatibility
Question 1369Question →

A client admitted with acute decompensated heart failure is receiving a continuous intravenous infusion of milrinone. The healthcare provider prescribes a one-time dose of intravenous furosemide 40 mg40\text{ mg} to manage worsening pulmonary edema. The client currently has a single peripheral intravenous access site. After consulting the facility's drug reference, the nurse notes that furosemide and milrinone are incompatible. Which of the following is the most appropriate action for the nurse to take?

Show answer & explanation

Answer: Establish a second peripheral intravenous access site to administer the furosemide.

Answer

Establish a second peripheral intravenous access site to administer the furosemide.
Furosemide and milrinone are chemically incompatible and cannot be mixed. While stopping an infusion and flushing the line is an acceptable practice for routine continuous fluids (like normal saline), milrinone is a critical continuous inotropic infusion. Pausing a vasoactive medication to administer an IV push can lead to an abrupt drop in cardiac output and severe hemodynamic instability. Therefore, the safest and most appropriate action is to establish a new, separate intravenous access site.

Step-by-Step Solution

1
Identify the incompatibility between the prescribed medications.
The nurse confirms that intravenous furosemide and milrinone cannot be mixed or administered through the same line concurrently.
Mixing incompatible medications can cause precipitation, leading to line occlusion or emboli.
2
Evaluate the nature of the continuous infusion.
The nurse recognizes that milrinone is a critical continuous inotropic medication used to support cardiac output in heart failure.
Understanding the pharmacology of the continuous infusion dictates whether it is safe to temporarily pause the medication.
3
Determine the safest administration strategy.
The nurse concludes that pausing the milrinone is unsafe due to the risk of hemodynamic collapse, and concurrent administration is unsafe due to incompatibility.
A second, independent intravenous line is required to safely administer the furosemide without interrupting life-sustaining therapy.

Key Concept

Intravenous Medication Compatibility and Vasoactive Infusion Safety
Question 1370Question →

A nurse is monitoring a client who is 4 hours post-operative following abdominal surgery. Which clinical finding should the nurse identify as an early indicator of hypovolemic shock?

Show answer & explanation

Answer: Restlessness and an unexplained increase in heart rate.

Answer

Restlessness and an unexplained increase in heart rate.
In the early (compensatory) stage of hypovolemic shock, the body attempts to maintain cardiac output and oxygen delivery by activating the sympathetic nervous system. This results in an increased heart rate (tachycardia) and early neurological changes, such as restlessness or anxiety, due to subtle decreases in cerebral perfusion.

Step-by-Step Solution

1
Analyze the client's clinical scenario.
The client is 4 hours post-operative, placing them at high risk for hemorrhage and hypovolemic shock.
Identifying the primary risk factor helps in anticipating possible complications.
2
Recall the physiological stages of shock.
Shock progresses from an early compensatory stage to a progressive, uncompensated stage.
Differentiating between early and late signs of shock is essential to answer the question correctly.
3
Evaluate the options based on early vs. late indicators.
Tachycardia and restlessness are early signs due to sympathetic stimulation. Hypotension and mottling are late signs when compensation fails.
This confirms which finding represents the earliest warning.

Key Concept

Early indicators of hypovolemic shock include tachycardia, tachypnea, and altered mental status (restlessness) as the body attempts to compensate for decreased fluid volume.
Estimated Time:1m 0s
Question 1371Question →

Following a prolonged transcontinental flight, a traveler is brought to the urgent care clinic reporting sudden, sharp chest pain and severe shortness of breath. Initial assessment reveals a heart rate of 122 beats per minute, a blood pressure of 98/80 mmHg, and a respiratory rate of 32 breaths per minute. Arterial blood gas (ABG) analysis on room air demonstrates a pHpH of 7.54, PaCO2PaCO_2 of 26 mmHg, PaO2PaO_2 of 54 mmHg, and HCO3−HCO_3^- of 23 mEq/L. Which physiological adaptations accurately reflect this client's current presentation? (Select all that apply)

Select all that apply

Show answer & explanation

Answer: Reduced ventricular stroke volume secondary to acute right heart strain; Alveolar hyperventilation resulting in a primary uncompensated respiratory alkalosis

Answer

The accurate physiological adaptations are reduced ventricular stroke volume due to acute right heart strain and an uncompensated respiratory alkalosis driven by alveolar hyperventilation.
The clinical picture strongly suggests an acute pulmonary embolism leading to obstructive shock. The significant narrowing of the pulse pressure (98 - 80 = 18 mmHg) coupled with tachycardia demonstrates reduced ventricular stroke volume from right heart strain and subsequent compensatory sympathetic vasoconstriction. Additionally, the severe tachypnea (32 breaths/min) has caused excessive elimination of CO2CO_2, resulting in a high pHpH (7.54) and low PaCO2PaCO_2 (26 mmHg) with normal bicarbonate, which defines an uncompensated respiratory alkalosis.

Step-by-Step Solution

1
Analyze the hemodynamic vital signs to identify early markers of shock.
The blood pressure of 98/80 mmHg reveals a narrowed pulse pressure of 18 mmHg. Combined with tachycardia (122 bpm), this indicates compensatory sympathetic activation due to decreased stroke volume.
Recognizing a narrow pulse pressure is critical for identifying early obstructive or hypovolemic shock before profound hypotension occurs.
2
Interpret the Arterial Blood Gas (ABG) values.
The pHpH is elevated (7.54), indicating alkalemia. The PaCO2PaCO_2 is low (26 mmHg), indicating a respiratory etiology. The HCO3−HCO_3^- is normal (23 mEq/L), indicating an uncompensated state.
ABG interpretation determines the specific acid-base imbalance and the presence or absence of metabolic compensation.
3
Evaluate the effect of the acid-base disturbance on oxygen delivery.
The respiratory alkalosis will cause a leftward shift of the oxyhemoglobin dissociation curve.
A leftward shift means hemoglobin has an increased affinity for oxygen, making it harder to release oxygen to the tissues, exacerbating cellular hypoxia despite the measured PaO2PaO_2.

Key Concept

Physiological adaptation to acute pulmonary embolism involves obstructive shock hemodynamics (narrow pulse pressure, tachycardia) and uncompensated respiratory alkalosis.
Question 1372Question →

A telemetry unit nurse is monitoring a client who has a long-standing history of chronic obstructive pulmonary disease. The client was admitted yesterday with a severe lower respiratory tract infection. During the current assessment, the nurse observes that the client is somnolent and only responds to painful stimuli. The respiratory rate has dropped from 26 to 9 breaths per minute. The most recent arterial blood gas analysis reveals a pH of 7.217.21, a PaCO 2_2 of 7878 mmHg, an HCO 3−_3^- of 2929 mEq/L, and a PaO 2_2 of 5454 mmHg. Based on these findings, which of the following is the most appropriate initial action?

Show answer & explanation

Answer: Provide immediate ventilatory assistance with a bag-valve-mask device.

Answer

Provide immediate ventilatory assistance with a bag-valve-mask device.
The correct action is to provide immediate ventilatory assistance with a bag-valve-mask device. The client is experiencing acute hypercapnic respiratory failure (carbon dioxide narcosis), as evidenced by the severe drop in respiratory rate (9 breaths per minute), altered level of consciousness (somnolent, responds only to pain), and severe respiratory acidosis (pH 7.21, PaCO2 78 mmHg). When a client loses the drive or ability to spontaneously ventilate, the immediate priority is to artificially support their airway and breathing to facilitate gas exchange and remove excess carbon dioxide.

Step-by-Step Solution

1
Analyze the client's current clinical presentation.
The client is somnolent, responds only to painful stimuli, and has a respiratory rate of 9 breaths per minute.
Identifying the level of consciousness and respiratory effort is crucial for determining the ability to maintain a patent airway and adequate spontaneous ventilation.
2
Interpret the arterial blood gas (ABG) values.
pH 7.21 indicates severe acidemia. PaCO2 78 mmHg indicates severe hypercapnia. HCO3 29 mEq/L indicates partial compensation. PaO2 54 mmHg indicates severe hypoxemia.
ABG interpretation confirms acute-on-chronic respiratory acidosis resulting from profound alveolar hypoventilation.
3
Synthesize the findings to prioritize the nursing intervention.
The combination of bradypnea, unresponsiveness, and severe respiratory acidosis indicates impending respiratory arrest due to carbon dioxide narcosis.
When a client can no longer spontaneously breathe effectively enough to clear carbon dioxide or maintain oxygenation, manual mechanical ventilation must be initiated immediately prior to endotracheal intubation.

Key Concept

Management of Acute Hypercapnic Respiratory Failure
Question 1373Question →

A 42-year-old client is being monitored in the neuro-intensive care unit following a severe traumatic brain injury. The client is sedated and mechanically ventilated. Current assessment findings include an intracranial pressure (ICP) of 26 mm Hg, a blood pressure of 170/65 mm Hg, and a heart rate of 52 beats/min. The latest arterial blood gas (ABG) results are: pH 7.28, PaCO2 58 mm Hg, PaO2 94 mm Hg, and HCO3 24 mEq/L. Which intervention should the nurse prioritize to reduce the client's risk for further neurological deterioration?

Show answer & explanation

Answer: Anticipate an order to increase the mechanical ventilator rate to decrease the arterial carbon dioxide level.

Answer

The correct action is to anticipate an order to increase the mechanical ventilator rate to lower the arterial carbon dioxide level, which will cause cerebral vasoconstriction and reduce intracranial pressure.
The client is exhibiting Cushing's triad (bradycardia, severe hypertension with widened pulse pressure) and an elevated intracranial pressure (ICP), indicating impending brainstem herniation. The arterial blood gas reveals uncompensated respiratory acidosis (pH 7.28, PaCO2 58 mm Hg). Elevated PaCO2 causes potent cerebral vasodilation, which increases cerebral blood volume and further elevates ICP. Increasing the ventilator rate will blow off excess CO2, causing cerebral vasoconstriction and immediately reducing the risk of herniation.

Step-by-Step Solution

1
Analyze the client's vital signs and physical findings.
The client has an elevated ICP of 26 mm Hg, severe hypertension with a widened pulse pressure (170/65 mm Hg), and bradycardia (52 bpm).
These findings represent Cushing's triad, indicating impending, life-threatening brainstem herniation.
2
Interpret the arterial blood gas (ABG) values.
The ABG shows a low pH (7.28), high PaCO2 (58 mm Hg), and normal HCO3 (24 mEq/L), which indicates uncompensated respiratory acidosis.
Understanding the precise acid-base imbalance is necessary to determine the physiological cause of the neurological deterioration.
3
Connect the laboratory data to the clinical pathophysiology of the brain injury.
Hypercapnia (elevated PaCO2) is a potent cerebral vasodilator. This vasodilation increases cerebral blood volume, directly driving up the intracranial pressure.
Identifying the physiological trigger guides the selection of the most effective risk-reduction strategy.
4
Select the intervention that immediately reduces the physiological risk.
Increasing the mechanical ventilator rate.
A higher respiratory rate blows off excess carbon dioxide, inducing cerebral vasoconstriction and immediately reducing the intracranial pressure to prevent herniation.

Key Concept

Reduction of Risk Potential: Management of Increased Intracranial Pressure and Respiratory Acidosis
Question 1374Question →

While managing the care of a critically ill client diagnosed with severe sepsis, the nurse monitors for the complication of acute respiratory distress syndrome (ARDS). Which specific assessment findings signify that the client has entered the early stages of this pulmonary complication? Select all that apply.

Select all that apply

Show answer & explanation

Answer: Arterial oxygen tension (PaO2) of 54 mm Hg (7.2 kPa) despite oxygen therapy via a non-rebreather mask; Chest radiograph revealing diffuse, bilateral pulmonary opacities; Sudden onset of severe tachypnea and use of accessory muscles

Answer

The correct findings indicating early-stage ARDS are a PaO2 of 54 mm Hg despite high-flow oxygen, bilateral diffuse opacities on the chest radiograph, and a sudden onset of severe tachypnea with accessory muscle use.
The diagnosis of early-stage ARDS is supported by the presence of refractory hypoxemia (low PaO2 despite high oxygen delivery), diffuse bilateral pulmonary opacities on a chest radiograph due to increased capillary permeability, and early clinical signs of respiratory distress such as sudden tachypnea and accessory muscle use.

Step-by-Step Solution

1
Recall the pathophysiology and diagnostic criteria for acute respiratory distress syndrome (ARDS).
ARDS is a form of non-cardiogenic pulmonary edema characterized by widespread inflammation, increased capillary permeability, and loss of surfactant, leading to alveolar collapse.
Understanding the underlying mechanism distinguishes ARDS from cardiogenic causes of respiratory failure.
2
Analyze the options for early clinical manifestations of ARDS.
Early signs include severe tachypnea, increased work of breathing, and respiratory alkalosis due to hyperventilation. The chest radiograph will show bilateral opacities.
Identifying timeline-specific symptoms is critical, as manifestations change (e.g., progression from respiratory alkalosis to respiratory acidosis) as the condition worsens.
3
Evaluate the hemodynamic and oxygenation indicators associated with ARDS.
Refractory hypoxemia is present, meaning PaO2 remains low despite high FiO2. The pulmonary artery wedge pressure (PAWP) should be normal (less than 18 mm Hg) because the edema is non-cardiogenic.
Hemodynamic parameters like PAWP definitively differentiate ARDS from left-sided heart failure and cardiogenic shock.

Key Concept

Acute Respiratory Distress Syndrome (ARDS) Pathophysiology and Assessment
Question 1375Question →

A nurse is managing the care of an older adult client who is receiving continuous enteral nutrition via a nasogastric tube. As part of the client's pressure injury prevention plan, the nurse must reposition the client into a flat, lateral recumbent position. Which action is the most appropriate?

Show answer & explanation

Answer: Suspend the continuous enteral feeding for at least 30 minutes before lowering the head of the bed.

Answer

Suspend the continuous enteral feeding for at least 30 minutes before lowering the head of the bed.
To prevent regurgitation and aspiration, continuous enteral feedings must be paused for 30 to 60 minutes before placing a client in a flat position, allowing sufficient time for gastric emptying.

Step-by-Step Solution

1
Identify the primary safety risk associated with continuous enteral feeding.
The highest risk is aspiration of gastric contents into the lungs.
Enteral formulas introduced into the stomach can easily reflux up the esophagus if gravity is not utilized.
2
Determine the necessary positioning requirements for continuous enteral feeding.
The head of the bed must be maintained at an elevation of at least 30 degrees.
Elevation uses gravity to keep gastric contents in the stomach and prevent regurgitation.
3
Analyze the procedural requirement (flat, lateral recumbent position) against the feeding safety requirement.
The procedural position contradicts the safety requirement for active feeding.
Lying flat removes the gravitational barrier to reflux, making active feeding unsafe.
4
Select the appropriate nursing intervention to resolve the conflict.
The nurse must pause the feeding pump for 30 to 60 minutes before lowering the head of the bed.
This waiting period allows sufficient time for gastric emptying, significantly reducing the risk of aspiration when the client is laid flat.

Key Concept

Aspiration prevention during continuous enteral nutrition and client repositioning.
Question 1376Question →

A nurse is caring for a client who is two days postoperative following an open exploratory laparotomy. The client coughs forcefully and reports a sudden "popping" sensation in the abdomen. The nurse assesses the surgical site and observes an evisceration. In which order should the nurse perform the following actions to reduce the client's risk of complications? Arrange the actions in chronological order from first to last.

Drag items to arrange them in the correct order

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Answer

The correct sequence is to call for help, position the client, cover the organs, assess vital signs, notify the surgeon, and prepare for surgery.
The correct sequence prioritizes immediate client safety and organ viability. The nurse must first secure help to obtain supplies without abandoning the client. Next, placing the client in a low-Fowler's position with bent knees immediately reduces abdominal tension to prevent further evisceration. Once supplies arrive, covering the exposed organs with sterile, moist dressings is critical to prevent necrosis. Only after the organs are protected should the nurse assess vital signs to evaluate for shock. This assessment provides necessary data for the subsequent step of notifying the surgeon. Finally, the nurse prepares the client for definitive emergency surgery.

Step-by-Step Solution

1
Remain with the client and delegate a colleague to gather sterile supplies.
Immediate assistance is secured without abandoning the client.
The nurse must never leave a client with an evisceration due to the high risk of rapid physiological deterioration.
2
Position the client in a low-Fowler's position with the knees flexed.
Tension on the abdominal musculature is reduced.
This positioning prevents further protrusion of the viscera by relaxing the abdominal wall.
3
Cover the protruding internal organs with sterile dressings moistened with sterile normal saline.
The exposed viscera are protected from the environment.
Preventing bowel drying, ischemia, and necrosis is the most urgent physiological priority once supplies are available.
4
Assess the client's vital signs and peripheral perfusion.
The client's hemodynamic status is established.
Monitoring for hypovolemic shock provides critical baseline data needed before contacting the provider.
5
Communicate the assessment findings and the clinical emergency to the surgeon.
The surgical team is activated.
The surgeon needs the current vital signs and the exact clinical situation to initiate emergency surgical protocols.
6
Maintain the client's NPO status and prepare for immediate surgical intervention.
The client is readied for the operating room.
The definitive treatment for an evisceration is surgical closure.

Key Concept

Emergency management of surgical wound evisceration requires immediate interventions to reduce tension and protect organ viability before assessment and notification.
Question 1377Question →

A client recovering from abdominal surgery requires pain management. The provider orders morphine sulfate 6 mg6 \text{ mg} IV push every 4 hours as needed for severe pain. The medication is available in a vial containing 10 mg/mL10 \text{ mg}/\text{mL}. How many milliliters should the nurse administer for a single dose?

Show answer & explanation

Answer: 0.6 mL0.6 \text{ mL}

Answer

0.6 mL0.6 \text{ mL}
The correct calculation for this medication administration uses the standard formula of (Desired Dose / Available Dose) ×\times Volume. The desired dose is 6 mg6 \text{ mg}, and the available dose is 10 mg10 \text{ mg} per 1 mL1 \text{ mL}. Therefore, 6 mg10 mg×1 mL=0.6 mL\frac{6 \text{ mg}}{10 \text{ mg}} \times 1 \text{ mL} = 0.6 \text{ mL}.

Step-by-Step Solution

1
Identify the desired dose from the provider's order.
Desired dose = 6 mg6 \text{ mg}
This represents the exact amount of medication the client needs to receive.
2
Identify the available concentration (have) and the volume it is dissolved in.
Have = 10 mg10 \text{ mg}, Volume = 1 mL1 \text{ mL}
This information is found on the medication vial label and is required for the calculation.
3
Apply the medication calculation formula: DesiredHave×Volume\frac{\text{Desired}}{\text{Have}} \times \text{Volume}.
6 mg10 mg×1 mL=0.6 mL\frac{6 \text{ mg}}{10 \text{ mg}} \times 1 \text{ mL} = 0.6 \text{ mL}
This formula accurately converts the prescribed milligram dose into the correct administrable liquid volume.

Key Concept

Basic Medication Dosage Calculation
Estimated Time:45s
Question 1378Question →

A 75-year-old client is prescribed prolonged bed rest and has an indwelling urinary catheter in place. The client, who has been previously cooperative and oriented, suddenly becomes severely agitated and repeatedly pulls at the catheter tubing. Which intervention is the most appropriate for the nurse to perform?

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Answer: Inspect the catheter tubing for any kinks or blockages and gently palpate the client's suprapubic area for bladder distention.

Answer

Inspect the catheter tubing for any kinks or blockages and gently palpate the client's suprapubic area for bladder distention.
The correct answer focuses on identifying and resolving the physiological source of the client's distress. In older adults, sudden agitation is frequently a behavioral manifestation of an unmet basic care need, such as pain or a full bladder. Checking the catheter for patency and the bladder for distention addresses the most likely cause of the discomfort.

Step-by-Step Solution

1
Analyze the client's sudden change in behavior.
The client has transitioned rapidly from being cooperative to severely agitated, specifically targeting the urinary catheter.
Sudden behavioral changes in older adults often stem from unmet basic physiological needs or acute, unexpressed physical discomfort.
2
Identify potential sources of physical discomfort related to the client's specific actions.
The client is pulling at the catheter, strongly suggesting localized discomfort in the bladder or urethral area.
A blocked, kinked, or clamped catheter causes urine to accumulate in the bladder, leading to painful distention and severe agitation.
3
Determine the most appropriate basic care nursing intervention.
The nurse must immediately assess the equipment for patency and the client's abdomen for a full bladder.
Resolving the physical discomfort by restoring normal urine flow directly addresses the root cause of the agitation.

Key Concept

Recognizing physical discomfort and elimination issues as primary causes of acute agitation in older adults.
Estimated Time:1m 15s
Question 1379Question →

A client is recovering on the telemetry unit 4 hours after a percutaneous coronary intervention (PCI) via the right femoral artery. The client reports a new, mild, dull ache in the lower back but denies chest pain or shortness of breath. The nurse notes the following vital sign trends over the past hour:

TimeBlood PressureHeart RateRespiratory Rate
14:00134/76 mm Hg74 bpm14 breaths/min
14:30128/82 mm Hg86 bpm16 breaths/min
15:00116/88 mm Hg104 bpm22 breaths/min

Which of the following actions should the nurse take FIRST?

Show answer & explanation

Answer: Inspect the right groin insertion site and gently logroll the client to assess the flank.

Answer

Inspect the right groin insertion site and gently logroll the client to assess the flank.
The correct action is to assess the insertion site and flank. The vital sign trends (narrowing pulse pressure, tachycardia, tachypnea) combined with the new-onset lower back pain are classic signs of a retroperitoneal hemorrhage, a severe complication of femoral arterial access. The nursing process dictates that assessment must occur first to confirm the source of bleeding so immediate mechanical interventions (e.g., manual pressure) can be applied.

Step-by-Step Solution

1
Analyze the client's symptoms and vital sign trends.
The client has a narrowing pulse pressure (58 to 28 mm Hg), increasing tachycardia, and tachypnea, along with new-onset lower back pain.
Recognizing early compensatory mechanisms of shock is essential for timely intervention.
2
Correlate the findings with the recent procedure (femoral PCI).
The clinical picture strongly suggests a retroperitoneal hemorrhage, a known complication of femoral arterial access.
Lower back or flank pain combined with hypovolemic signs post-femoral puncture is the classic presentation of retroperitoneal bleeding.
3
Determine the highest priority nursing action using the nursing process.
Assessment of the puncture site and flank/retroperitoneal area must precede any pharmacological or fluid interventions.
Direct assessment confirms the complication and dictates immediate life-saving actions, such as applying manual pressure.

Key Concept

Early recognition of retroperitoneal hemorrhage and hypovolemic shock post-femoral arterial puncture.
Question 1380Question →

An older adult client with moderate Alzheimer's disease is admitted to the medical unit for treatment of bacterial pneumonia. The client is receiving continuous intravenous (IV) fluids. Throughout the morning, the client becomes repeatedly incontinent of urine, appears increasingly restless, and continuously picks at the IV dressing. Which action by the nurse is most appropriate?

Show answer & explanation

Answer: Apply a protective moisture barrier cream to the perineal area and camouflage the IV tubing using a long-sleeved hospital gown.

Answer

The correct intervention is to apply a moisture barrier cream to protect the skin and conceal the IV site using a long-sleeved gown as a restraint alternative.
The correct answer addresses the client's physiological needs while utilizing the least restrictive interventions. Applying a moisture barrier cream protects the client's skin from moisture-associated skin damage caused by incontinence. Concealing the IV site with a long-sleeved gown or tubular bandage is an effective, non-restrictive alternative to prevent the client from picking at the line.

Step-by-Step Solution

1
Identify the client's primary needs based on the clinical presentation.
The client requires immediate skin protection due to incontinence and an IV protection strategy due to restlessness.
Frequent incontinence increases the risk of skin breakdown, and pulling at the IV line risks interrupting essential prescribed therapy.
2
Evaluate the proposed interventions for safety and adherence to the nursing scope of practice.
Restraints are too restrictive for an initial intervention, and delegating assessment to a UAP is unsafe.
Least restrictive measures must be used first to promote safety, and registered nurses cannot delegate nursing assessments.
3
Select the intervention that promotes comfort and safety using the least restrictive means.
Applying barrier cream and camouflaging the IV site is the best choice.
This comprehensively addresses both hygiene and safety by protecting the skin and distracting the client without using physical restraints.

Key Concept

Prioritizing least restrictive safety measures and maintaining skin integrity in cognitively impaired older adults.
Estimated Time:1m 0s
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