Which drug blocks the binding of angiotensin II to its receptors on blood vessels and adrenal glands, preventing its vasoconstrictive and aldosterone-stimulating effects?
Beta blockers
Calcium channel blockers
Angiotensin II receptor blockers (ARBs)
Direct acting vasodilators.
The Correct Answer is C
Angiotensin II receptor blockers (ARBs) block the binding of angiotensin II to its receptors on blood vessels and adrenal glands, preventing its vasoconstrictive and aldosterone-stimulating effects
Choice A is wrong because beta blockers do not block angiotensin II receptors, but rather beta-adrenergic receptors, which are involved in the sympathetic nervous system. Beta blockers reduce heart rate and blood pressure by inhibiting the effects of adrenaline and noradrenaline
Choice B is wrong because calcium channel blockers do not block angiotensin II receptors, but rather calcium channels, which are involved in the contraction of smooth muscle cells. Calcium channel blockers relax blood vessels and lower blood pressure by reducing the influx of calcium into the cells
Choice D is wrong because direct acting vasodilators do not block angiotensin II receptors, but rather act directly on the smooth muscle cells of blood vessels, causing them to relax and dilate. Direct acting vasodilators lower blood pressure by decreasing peripheral resistance
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
This is because diltiazem (Cardizem) is a calcium channel blocker that lowers blood pressure and can cause orthostatic hypotension, which is a sudden drop in blood pressure when standing up from a sitting or lying position. This can lead to dizziness and lightheadedness, which can increase the risk of falls and injuries. Changing positions slowly can help prevent or reduce these symptoms by allowing the body to adjust to the change in blood pressure.
Choice A) Administer diltiazem as ordered by physician is wrong because it does not address the patient’s complaint of dizziness and lightheadedness, which are side effects of the medication.
The nurse should monitor the patient’s blood pressure and heart rate before and after administering diltiazem, and report any abnormal findings to the physician.
Choice C) Notify physician immediately is wrong because it is not necessary to notify the physician immediately for a common and mild side effect of diltiazem, unless the patient has other signs of severe hypotension, such as fainting, chest pain, or confusion.
The nurse should educate the patient about the possible side effects of diltiazem and how to prevent or manage them.
Choice D) Hold diltiazem and notify physician if symptoms persist is wrong because it is not appropriate to hold a prescribed medication without a valid reason or an order from the physician.
Holding diltiazem could cause the patient’s blood pressure to rise and increase the risk of complications from atrial fibrillation, such as stroke or heart failure.
The nurse should administer diltiazem as ordered and monitor the patient’s response.
Correct Answer is C
Explanation
The client has a blood pressure of 120/78 mm Hg. This indicates that the medication is effective because it lowers the blood pressure below the hypertensive levels.In adults 60 years of age or older, this is typically defined as a systolic pressure below 150 mm Hg and a diastolic pressure below 90 mm Hg.
Choice A is wrong because the client has no edema in the lower extremities. This is not a specific outcome of lisinopril, an angiotensin II receptor blocker (ARB). Edema can be caused by many factors, such as heart failure, kidney disease, or venous insufficiency. Lisinopril does not directly affect fluid retention or edema.
Choice B is wrong because the client has a urine output of 30 mL/hr. This is a low urine output that may indicate dehydration, kidney impairment, or urinary obstruction. Lisinopril is expected to increase urine output by reducing the blood pressure and improving the renal blood flow.
Choice D is wrong because the client has a serum creatinine level of 1.2 mg/dL. This is a high serum creatinine level that may indicate kidney damage or reduced kidney function. Lisinopril is expected to lower the serum creatinine level by preventing the progression of kidney disease and protecting the kidney from further injury.
Normal ranges of urine output, blood pressure, and serum creatinine are:
• Urine output: 800 to 2000 mL/day or 40 to 80 mL/hr
• Blood pressure: less than 120/80 mm Hg for adults
• Serum creatinine: 0.6 to 1.2 mg/dL for males and 0.5 to 1.1 mg/dL for females
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