Which of the following describes why an ACE inhibitor is prescribed to a patient with Heart Failure?

decreases contractility

increases preload

decreased afterload

increases sympathetic stimulation

Answer and Explanation

The Correct Answer is C

A. Decreases contractility: This is incorrect because ACE inhibitors do not directly affect myocardial contractility. They primarily work on the vascular system.

B. Increases preload: This is incorrect as ACE inhibitors do not increase preload. They may decrease preload by reducing fluid retention.

C. Decreased afterload: ACE inhibitors lower systemic vascular resistance (afterload) by inhibiting the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor. This reduces the workload on the heart.

D. Increases sympathetic stimulation: This is incorrect because ACE inhibitors actually reduce sympathetic stimulation by preventing the vasoconstrictive and sodium-retaining effects of angiotensin II.

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Correct Answer is A

Explanation

A. Hypertension: This is not a cause of high-output heart failure. Hypertension typically leads to low-output heart failure due to increased afterload, which causes the heart to work harder.

B. Severe anemia: Severe anemia causes high-output heart failure because the body compensates for the decreased oxygen-carrying capacity by increasing cardiac output.

C. Sepsis: Sepsis can lead to high-output heart failure as the body attempts to maintain perfusion in the face of widespread vasodilation.

D. Hyperthyroidism: Hyperthyroidism increases metabolic demands, which can cause high-output heart failure as the heart attempts to meet the increased needs.

A. An increase in O2 saturation to greater than 90% B. The onset of atrial fibrillation C. Louder S, and S2 heart sounds D. A decrease in heart rate to 66 bpm

Correct Answer is B

Explanation

A. An increase in O2 saturation to greater than 90%: An increase in oxygen saturation is typically a positive sign and does not indicate worsening heart failure.

B. The onset of atrial fibrillation: The development of atrial fibrillation (AFib) in a patient with heart failure is a sign of worsening heart failure, as it indicates increased atrial pressure and the potential for further hemodynamic compromise.

C. Louder S1 and S2 heart sounds: Louder heart sounds do not specifically indicate worsening heart failure. They may vary based on other factors such as body habitus or the position of the patient.

D. A decrease in heart rate to 66 bpm: A heart rate of 66 bpm is within the normal range and does not suggest worsening heart failure.

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Which of the following describes why an ACE inhibitor is prescribed to a patient with Heart Failure?

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Naxlex Comprehensive Predictor Exams

Which of the following is not a cause of high-output heart failure?

Correct Answer is A

Explanation

Which assessment finding indicates that a patient's heart failure (HF) is worsening?

Correct Answer is B

Explanation

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