Nursing Elites

1. What is a surgical procedure to replace a damaged or diseased heart valve with a prosthetic valve?

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

Correct answer: A

Rationale: Valve replacement is the correct answer because it involves replacing a damaged or diseased heart valve with a prosthetic valve. This procedure is essential for improving blood flow and heart function. Angioplasty (choice B) is a procedure to widen narrowed or obstructed arteries. Stent placement (choice C) involves inserting a mesh tube to help support weak arteries. Bypass surgery (choice D) is a procedure to create new routes for blood flow when arteries are blocked.

2. Which surgical procedure involves removing a portion of the lung?

• A. Lobectomy
• B. Pneumonectomy
• C. Tracheostomy
• D. Bronchoscopy

Correct answer: A

Rationale: A lobectomy is the surgical removal of a lobe of the lung. This procedure is commonly performed to treat conditions like lung cancer or severe lung diseases. Pneumonectomy involves removing an entire lung, making it incorrect. Tracheostomy is a surgical procedure to create an opening in the windpipe, not involving lung tissue removal. Bronchoscopy is a diagnostic procedure that allows visualization of the airways using a thin, flexible tube with a camera, not involving lung tissue removal.

3. What is the average cardiac output?

• A. Approximately 4 to 6 L per minute
• B. Approximately 4 to 8 L per minute
• C. Approximately 5 to 8 L per minute
• D. Approximately 3 to 7 L per minute

Correct answer: B

Rationale: The correct answer is B: Approximately 4 to 8 L per minute. Cardiac output is defined as the volume of blood the heart pumps per minute, typically ranging between 4 to 8 liters. Choices A, C, and D provide ranges that are either too narrow or outside the standard average values for cardiac output, making them incorrect.

4. Which type of heart valve disease occurs when the mitral valve does not close properly, allowing blood to flow backward into the left atrium?

• A. Mitral regurgitation
• B. Aortic stenosis
• C. Tricuspid regurgitation
• D. Pulmonary hypertension

Correct answer: A

Rationale: Mitral regurgitation is the correct answer. It occurs when the mitral valve does not close properly, allowing blood to flow backward into the left atrium. This condition can lead to symptoms such as fatigue, shortness of breath, and if left untreated, it can progress to heart failure. Aortic stenosis (choice B) is a different heart valve condition characterized by narrowing of the aortic valve, restricting blood flow from the heart. Tricuspid regurgitation (choice C) involves the tricuspid valve not closing properly, leading to blood flowing back into the right atrium. Pulmonary hypertension (choice D) is a condition characterized by high blood pressure in the arteries of the lungs.

5. 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.

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