Nursing Elites

1. What is a condition where the heart is unable to relax properly between beats, reducing its ability to fill with blood?

• A. Diastolic heart failure
• B. Systolic heart failure
• C. Hypertrophic cardiomyopathy
• D. Restrictive cardiomyopathy

Correct answer: A

Rationale: The correct answer is A: Diastolic heart failure. In diastolic heart failure, the heart is unable to relax properly between beats, leading to a reduced ability to fill with blood. This condition primarily affects the heart's filling function rather than its pumping function, which is characteristic of systolic heart failure (choice B). Hypertrophic cardiomyopathy (choice C) involves the abnormal thickening of the heart muscle, while restrictive cardiomyopathy (choice D) is characterized by the heart muscle becoming stiff and less compliant. Therefore, choices B, C, and D are incorrect in the context of a heart condition where relaxation between beats is impaired.

2. What is a condition where the blood supply to part of the brain is interrupted or reduced, preventing brain tissue from getting oxygen and nutrients?

• A. Stroke
• B. Heart attack
• C. Pulmonary embolism
• D. Pneumonia

Correct answer: A

Rationale: A stroke occurs when the blood supply to part of the brain is interrupted or reduced, leading to brain cell death and potential disability. Choice B, a heart attack, involves a blockage in the blood vessels that supply the heart muscle. Choice C, a pulmonary embolism, is a blockage in one of the pulmonary arteries in the lungs. Choice D, pneumonia, is an infection that inflames the air sacs in one or both lungs.

3. Which neurotransmitter released by the parasympathetic nervous system can decrease heart rate?

• A. Acetylcholine
• B. Norepinephrine
• C. Dopamine
• D. Serotonin

Correct answer: A

Rationale: Acetylcholine is the correct answer. It is a neurotransmitter released by the parasympathetic nervous system that can decrease heart rate. Norepinephrine, dopamine, and serotonin are neurotransmitters that usually have different effects on the body and are not specifically associated with decreasing heart rate. Norepinephrine, for example, is often related to the fight-or-flight response and can increase heart rate.

4. Which surgical procedure involves grafting a blood vessel to bypass a blocked artery in the heart?

• A. Coronary artery bypass graft (CABG)
• B. Valve replacement
• C. Stent placement
• D. Angioplasty

Correct answer: A

Rationale: The correct answer is A, Coronary artery bypass graft (CABG). This surgical procedure involves grafting a blood vessel to bypass a blocked coronary artery, improving blood flow to the heart muscle. Choice B, Valve replacement, is a procedure to replace a damaged heart valve and is not directly related to bypassing blocked arteries. Choice C, Stent placement, involves inserting a mesh tube to keep blocked arteries open and is different from grafting a blood vessel. Choice D, Angioplasty, is a procedure to widen narrowed or blocked arteries, typically using a balloon catheter, and does not involve grafting a blood vessel.

5. The client is on hydrochlorothiazide and digoxin. What effect can the nurse expect?

• A. Hydrochlorothiazide increases digoxin levels.
• B. Hydrochlorothiazide decreases digoxin levels.
• C. Hydrochlorothiazide decreases potassium, increasing the risk of digoxin toxicity.
• D. Digoxin can increase the effectiveness of hydrochlorothiazide.

Correct answer: C

Rationale: The correct answer is C. Hydrochlorothiazide is a diuretic that can decrease potassium levels, which in turn can increase the risk of digoxin toxicity. Digoxin typically doesn't impact hydrochlorothiazide levels or effectiveness, making choices A, B, and D incorrect. Choice A stating that hydrochlorothiazide increases digoxin levels is inaccurate. Choice B suggesting that hydrochlorothiazide decreases digoxin levels is also incorrect. Choice D, stating that digoxin can increase the effectiveness of hydrochlorothiazide, is not a typical interaction seen between these medications.

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