In a patient with shock showing worsening tachypnea, hypotension, and altered mental status, which laboratory trend must be prioritized and reported to the provider immediately?

Stable ECG readings

Decreasing lactate levels.

Increasing creatinine levels

Elevated hemoglobin levels.

Answer and Explanation

The Correct Answer is C

A. Stable ECG readings: A stable ECG indicates that cardiac electrical activity is not currently showing acute arrhythmias or ischemic changes. While important to monitor, it does not directly reflect the severity of shock or organ perfusion, and immediate reporting is less urgent than evidence of worsening end-organ function.

B. Decreasing lactate levels: Lactate levels reflect tissue hypoperfusion and anaerobic metabolism. A decreasing trend suggests improving perfusion, which is favorable and does not require urgent reporting. It indicates that current interventions may be effective in reversing shock.

C. Increasing creatinine levels: Rising creatinine indicates declining renal function, often secondary to hypoperfusion in shock. Acute kidney injury is a critical complication of worsening shock, signaling inadequate tissue perfusion and potential multi-organ failure. Immediate reporting allows the provider to intervene promptly with fluid resuscitation, vasopressors, or other measures to prevent further organ damage.

D. Elevated hemoglobin levels: High hemoglobin may indicate hemoconcentration due to dehydration, but it is less immediately critical than evidence of end-organ dysfunction. While it should be monitored, it does not reflect acute deterioration in perfusion like rising creatinine does.

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Correct Answer is B

Explanation

A. To provide breathing until an automated external defibrillator (AED) arrives: While providing ventilation is part of CPR, the primary goal is not simply to bridge time until defibrillation. Ventilation alone does not ensure adequate perfusion of vital organs in cardiac arrest.

B. To provide oxygen to the brain, heart and other vital organs: The major objective of CPR is to maintain circulation and oxygen delivery to vital organs, particularly the brain and heart, until spontaneous cardiac activity can be restored. Effective chest compressions sustain perfusion, minimizing ischemic injury and improving the chance of survival with intact neurologic function.

C. To restore cardiac output to normal: CPR does not immediately restore normal cardiac output; it provides partial perfusion to vital organs. Full restoration of cardiac output requires successful return of spontaneous circulation through defibrillation, medications, and advanced cardiac life support interventions.

D. To prevent brain death within 2 minutes of anoxia: Although timely CPR reduces the risk of brain injury, brain death prevention is an indirect outcome rather than the immediate objective. The critical focus is maintaining oxygenated blood flow to vital tissues until cardiac function can resume.

A. Collaborate with respiratory therapy for airway clearance techniques. B. Initiate non-invasive positive pressure ventilation (NIPPV) C. Administer bronchodilators as prescribed. D. Prepare for possible endotracheal intubation. E. Begin high-flow oxygen therapy at 100% FIO2 F. Encourage vigorous physical activity to improve ventilation.

Correct Answer is ["A","B","C","D"]

Explanation

A. Collaborate with respiratory therapy for airway clearance techniques: Patients with COPD and hypercapnic respiratory failure often retain secretions due to impaired mucociliary clearance. Airway clearance techniques, such as chest physiotherapy, suctioning, and assisted coughing, help mobilize secretions, improve ventilation, and reduce the risk of infection.

B. Initiate non-invasive positive pressure ventilation (NIPPV): NIPPV, such as CPAP or BiPAP, supports ventilation by improving alveolar ventilation and reducing CO₂ retention in hypercapnic respiratory failure. It can prevent respiratory muscle fatigue and reduce the need for invasive mechanical ventilation, making it a key intervention in stable patients.

C. Administer bronchodilators as prescribed: Bronchodilators, including short-acting beta-agonists or anticholinergics, help relieve airway obstruction by relaxing bronchial smooth muscle. This improves airflow, gas exchange, and CO₂ elimination, directly addressing the pathophysiology of hypercapnic respiratory failure in COPD.

D. Prepare for possible endotracheal intubation: In cases where non-invasive measures fail or the patient becomes fatigued, hypoxic, or obtunded, endotracheal intubation with mechanical ventilation may be necessary. Early preparation ensures readiness for rapid intervention if respiratory failure progresses.

E. Begin high-flow oxygen therapy at 100% FiO₂: Administering high concentrations of oxygen can suppress the hypoxic drive in COPD patients, worsening hypercapnia. Oxygen therapy should be titrated carefully to maintain SaO₂ of 88–92%, not delivered at 100% unless clinically indicated in acute severe hypoxemia.

F. Encourage vigorous physical activity to improve ventilation: Vigorous activity in a patient with acute hypercapnic respiratory failure may exacerbate hypoxemia and fatigue respiratory muscles. Activity should be carefully graded and only encouraged once the patient is stabilized.

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In a patient with shock showing worsening tachypnea, hypotension, and altered mental status, which laboratory trend must be prioritized and reported to the provider immediately?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is B

Explanation

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Correct Answer is ["A","B","C","D"]

Explanation

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