Nursing Elites

1. Which term refers to the relaxation phase of the heart, during which the chambers fill with blood?

• A. Diastole
• B. Systole
• C. Refractoriness
• D. Automaticity

Correct answer: A

Rationale: The correct answer is A, Diastole. Diastole is the phase of the cardiac cycle when the heart muscles relax, allowing the chambers to fill with blood. Choice B, Systole, is incorrect as systole is the contraction phase of the heart when blood is pumped out of the chambers. Choice C, Refractoriness, refers to a period during which the heart muscle is unresponsive to stimuli. Choice D, Automaticity, relates to the heart's ability to generate its own electrical impulses.

2. Which condition refers to the heart being unable to pump sufficient blood to meet the body's needs?

• A. Heart failure
• B. Myocardial infarction
• C. Cardiomyopathy
• D. Pericarditis

Correct answer: A

Rationale: The correct answer is A, heart failure. This condition occurs when the heart can't pump enough blood to fulfill the body's requirements. Myocardial infarction (choice B) is the medical term for a heart attack, which is caused by a blockage in the coronary arteries. Cardiomyopathy (choice C) is a disease of the heart muscle that makes it harder for the heart to pump blood. Pericarditis (choice D) is the inflammation of the pericardium, the thin sac-like membrane surrounding the heart, and does not specifically involve the heart's inability to pump sufficient blood.

3. What is a surgical procedure to redirect blood flow around a blocked or narrowed artery, often involving the use of a graft from another part of the body?

• A. Coronary artery bypass graft (CABG)
• B. Valve replacement
• C. Aneurysm repair
• D. Atherectomy

Correct answer: A

Rationale: The correct answer is A: Coronary artery bypass graft (CABG). This surgical procedure is used to redirect blood flow around a blocked or narrowed artery by using a graft from another part of the body. Choices B, C, and D are incorrect because valve replacement involves replacing heart valves, aneurysm repair addresses the treatment of aneurysms, and atherectomy is a procedure to remove plaque from blood vessels, none of which match the description provided in the question.

4. When administering furosemide (Lasix) to a client, which lab value is most important to monitor?

• A. Potassium
• B. Sodium
• C. Calcium
• D. Chloride

Correct answer: A

Rationale: When administering furosemide (Lasix), it is crucial to monitor potassium levels closely. Furosemide is a loop diuretic that can lead to potassium loss, potentially causing hypokalemia. Monitoring potassium levels helps prevent adverse effects associated with low potassium, such as cardiac arrhythmias. While monitoring sodium, calcium, and chloride levels may also be important in certain situations, potassium is the most critical to monitor when administering furosemide.

5. Which condition is characterized by an inability to effectively pump blood, leading to fluid buildup and swelling in the body?

• A. Heart failure
• B. Cardiomyopathy
• C. Angina
• D. Myocarditis

Correct answer: A

Rationale: Heart failure is the correct answer. It is a condition where the heart is unable to pump blood effectively, resulting in fluid accumulation and swelling in the body. Cardiomyopathy is a disease of the heart muscle that affects its ability to pump blood but is not the specific condition described in the question. Angina is chest pain or discomfort caused by reduced blood flow to the heart, not directly related to fluid buildup and swelling. Myocarditis is inflammation of the heart muscle and does not necessarily involve the inability to pump blood effectively.

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