Nursing Elites

1. What is a condition where the heart's mitral valve does not close properly, causing blood to leak backward into the left atrium?

• A. Mitral valve prolapse
• B. Aortic stenosis
• C. Mitral stenosis
• D. Tricuspid regurgitation

Correct answer: A

Rationale: Mitral valve prolapse is the correct answer. It occurs when the mitral valve does not close properly, leading to blood leaking backward into the left atrium. This condition can manifest with symptoms such as palpitations and chest pain. Choices B, C, and D are incorrect because aortic stenosis involves narrowing of the aortic valve, mitral stenosis is the narrowing of the mitral valve, and tricuspid regurgitation is when blood leaks backward through the tricuspid valve.

2. Which surgical procedure involves opening or replacing a narrowed or blocked heart valve?

• A. Valve replacement
• B. Angioplasty
• C. Stent placement
• D. Coronary bypass surgery

Correct answer: A

Rationale: Valve replacement is the correct answer because it specifically involves surgically replacing a damaged or diseased heart valve with a prosthetic valve to address narrowing or blockage, thereby improving blood flow and heart function. Angioplasty (choice B) is a procedure to widen narrowed or obstructed arteries, typically using a balloon catheter. Stent placement (choice C) involves inserting a mesh tube to support a weakened artery. Coronary bypass surgery (choice D) is a procedure to create new routes for blood flow to the heart muscle by bypassing blocked arteries.

3. What is a chronic condition where the heart is unable to pump blood effectively, leading to fluid buildup in the lungs and other parts of the body?

• A. Heart failure
• B. Myocardial infarction
• C. Pericarditis
• D. Pulmonary edema

Correct answer: A

Rationale: The correct answer is A: Heart failure. Heart failure is a chronic condition characterized by the heart's inability to pump blood effectively, resulting in fluid accumulation in the lungs and other body tissues. Myocardial infarction (choice B) refers to a heart attack caused by a blocked coronary artery, leading to damage of heart muscle tissue. Pericarditis (choice C) is the inflammation of the pericardium, the protective sac around the heart. Pulmonary edema (choice D) is a condition where fluid builds up in the lungs, often as a result of heart failure.

4. What are the pressure-sensitive structures located in the aortic and carotid bodies called?

• A. Baroreceptors
• B. Chemoreceptors
• C. Nociceptors
• D. Mechanoreceptors

Correct answer: A

Rationale: Baroreceptors are the correct answer. Baroreceptors are specialized sensory receptors that detect changes in pressure within blood vessels. They are primarily located in the aortic arch and carotid sinuses, where they play a crucial role in regulating blood pressure. Chemoreceptors (Choice B) are receptors that detect chemical changes, not pressure changes. Nociceptors (Choice C) are responsible for detecting painful stimuli. Mechanoreceptors (Choice D) respond to mechanical stimuli such as touch, pressure, and vibration, but they are not specifically located in the aortic and carotid bodies.

5. The client on furosemide (Lasix) has a potassium level of 3.1 mEq/L. What is the nurse’s priority action?

• A. Administer a potassium supplement.
• B. Hold the furosemide and notify the healthcare provider.
• C. Continue the current dose of furosemide.
• D. Administer Digibind.

Correct answer: A

Rationale: The correct answer is to administer a potassium supplement. A potassium level of 3.1 mEq/L indicates hypokalemia, which can lead to serious complications like cardiac dysrhythmias. Therefore, the priority action is to address the low potassium level by administering a potassium supplement. Holding the furosemide (Choice B) may be necessary in the long term to prevent further potassium loss, but the immediate need is to correct the low potassium level. Continuing the current dose of furosemide (Choice C) without addressing the low potassium level can worsen hypokalemia. Administering Digibind (Choice D) is not indicated for low potassium levels; Digibind is used to treat digoxin toxicity.

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