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Cardiovascular System Exam Questions And Answers
1. Which condition involves the body's immune system attacking the lungs and kidneys, causing severe respiratory and renal damage?
- A. Goodpasture syndrome
- B. Sarcoidosis
- C. Wegener's granulomatosis
- D. Interstitial lung disease
Correct answer: A
Rationale: Goodpasture syndrome is the correct answer. It is an autoimmune disease characterized by the immune system attacking the lungs and kidneys, leading to bleeding in the lungs and kidney failure. Sarcoidosis primarily affects the lungs and lymph nodes, not the kidneys. Wegener's granulomatosis affects the lungs, sinuses, and kidneys, but it is characterized by inflammation of blood vessels. Interstitial lung disease involves scarring of the lung tissue, not direct immune system attacks on the lungs and kidneys.
2. This is a more accurate indicator of tissue perfusion. It represents the cardiac output in terms of liters per minute per square meter of body surface area. Its normal range is 2.4-4 L/min.
- A. Cardiac Index
- B. Stroke volume
- C. Ejection fraction
- D. Cardiac output
Correct answer: A
Rationale: The correct answer is A: Cardiac Index. Cardiac Index is a measure of cardiac output relative to body surface area, providing a more accurate assessment of tissue perfusion. It is calculated by dividing the cardiac output by the body surface area. The normal range for cardiac index is 2.4-4 L/min/m². Choice B, Stroke volume, refers to the amount of blood ejected by the heart in one contraction and is not adjusted for body surface area. Choice C, Ejection fraction, is the percentage of blood pumped out of the heart's ventricles with each contraction, not adjusted for body surface area. Choice D, Cardiac output, is the total volume of blood pumped by the heart per minute, without considering body surface area.
3. Which test uses sound waves to create images of the heart, allowing doctors to assess its structure and function?
- A. Echocardiogram
- B. MRI
- C. CT scan
- D. X-ray
Correct answer: A
Rationale: The correct answer is A: Echocardiogram. An echocardiogram is a test that uses sound waves to create images of the heart, enabling doctors to assess its structure and function. This imaging technique is particularly useful in detecting abnormalities such as valve disease. Choices B, C, and D are incorrect because MRI, CT scans, and X-rays use different imaging technologies that do not rely on sound waves to visualize the heart.
4. A client on a beta blocker has a blood pressure of 90/60 mm Hg. What is the nurse’s priority action?
- A. Hold the beta blocker and notify the healthcare provider.
- B. Administer the beta blocker as ordered.
- C. Administer a diuretic to reduce blood pressure.
- D. Continue to monitor the client and reassess in 30 minutes.
Correct answer: A
Rationale: The correct answer is to hold the beta blocker and notify the healthcare provider. A blood pressure of 90/60 mm Hg is already low, and beta blockers can further decrease blood pressure. Administering the beta blocker can potentially worsen the situation, leading to complications. Administering a diuretic or continuing to monitor the client without taking immediate action could delay necessary intervention. Therefore, holding the beta blocker and involving the healthcare provider promptly is crucial in this scenario.
5. This is a chronic condition where the heart is unable to pump enough blood to meet the body's needs.
- A. Heart failure
- B. Cardiomyopathy
- C. Myocarditis
- D. Pericarditis
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 enough blood to meet the body's needs, resulting in symptoms such as fatigue, shortness of breath, and fluid retention. Choice B, Cardiomyopathy, refers to diseases of the heart muscle that can lead to heart failure but is not the specific term for the condition described. Choices C and D, Myocarditis and Pericarditis, respectively, are conditions involving inflammation of the heart muscle or the lining around the heart, which can cause heart failure as a complication but are not the primary condition described in the question.
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