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Which type of medication is used to reduce the workload on the heart by slowing down the heart rate and lowering blood pressure?
- A. Beta-blocker
- B. ACE inhibitor
- C. Calcium channel blocker
- D. Diuretic
Correct Answer: A
Rationale: The correct answer is A: Beta-blocker. Beta-blockers reduce the workload on the heart by blocking the action of adrenaline on beta receptors, slowing down heart rate and lowering blood pressure. This helps to decrease the heart's oxygen demand and improve its efficiency. ACE inhibitors (B) work by dilating blood vessels, Calcium channel blockers (C) block calcium entry into cells to relax blood vessels, and Diuretics (D) reduce blood volume by increasing urine output, but they do not specifically target reducing the workload on the heart.
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What is a chronic condition where the heart is unable to pump blood efficiently, leading to fluid buildup in the lungs and other parts of the body?
- A. Heart failure
- B. Cardiomyopathy
- C. Pericarditis
- D. Aortic stenosis
Correct Answer: A
Rationale: Step 1: Heart failure is a chronic condition where the heart is unable to pump blood efficiently.
Step 2: This inefficiency leads to fluid buildup in the lungs (pulmonary congestion) and other parts of the body.
Step 3: Cardiomyopathy is a broad term for diseases that affect the heart muscle but may not necessarily result in heart failure.
Step 4: Pericarditis is inflammation of the pericardium, the sac surrounding the heart, not directly related to heart pumping efficiency.
Step 5: Aortic stenosis is a condition where the aortic valve narrows, affecting blood flow from the heart but not necessarily leading to heart failure.
What short term pharmacological approach is used after a client has a prosthetic heart valve replacement for 1 to 2 months postoperatively?
- A. Anticoagulant therapy
- B. Antibiotic therapy
- C. Ace Inhibitor therapy
- D. Beta Blocker therapy
Correct Answer: A
Rationale: Anticoagulant therapy prevents clot formation around the prosthetic valve, reducing the risk of complications.
This is the inflammation of the heart's inner lining, usually caused by an infection.
- A. Endocarditis
- B. Myocarditis
- C. Pericarditis
- D. Valvulitis
Correct Answer: A
Rationale: The correct answer is A: Endocarditis. Endocarditis is the inflammation of the heart's inner lining, often due to an infection. "Endo-" refers to the inner lining of the heart (endocardium) and "-itis" denotes inflammation. Myocarditis (B) is inflammation of the heart muscle, pericarditis (C) is inflammation of the outer lining of the heart, and valvulitis (D) is inflammation of the heart valves. Endocarditis specifically targets the inner lining, making it the correct choice.
What is the term for the amount of blood ejected by the left ventricle into the aorta per beat, determined by preload, contractility, and afterload?
- A. Stroke volume
- B. Cardiac output
- C. End-diastolic volume
- D. Ejection fraction
Correct Answer: A
Rationale: The correct answer is A: Stroke volume. Stroke volume is the amount of blood ejected by the left ventricle into the aorta per beat. Preload (end-diastolic volume), contractility, and afterload influence stroke volume. Cardiac output (B) is the total volume of blood pumped by the heart per minute. End-diastolic volume (C) is the volume of blood in the ventricle before contraction. Ejection fraction (D) is the percentage of blood ejected from the ventricle during systole.
The client is on enalapril (Vasotec) for hypertension. What side effect is most commonly associated with this medication?
- A. Dry cough
- B. Hypotension
- C. Hyperkalemia
- D. Headache
Correct Answer: A
Rationale: The correct answer is A: Dry cough. Enalapril is an ACE inhibitor, which commonly causes a dry cough due to increased bradykinin levels. This side effect is well-documented in literature and can lead to medication non-adherence. Other choices (B) Hypotension, (C) Hyperkalemia, and (D) Headache are potential side effects of enalapril but are not as commonly associated as dry cough. Hypotension and hyperkalemia are more serious adverse effects that require monitoring, while headache is a less common side effect compared to dry cough.