The nurse is administering the angiotensin II receptor antagonist valsartan. Which physiological response causes its therapeutic effect?
Chronotropic effect.
Diuresis
Vasodilation.
Sympatholytic action.
The Correct Answer is C
A) Chronotropic effect: This term refers to changes in heart rate. Angiotensin II receptor antagonists like valsartan primarily affect blood pressure and vascular tone, rather than directly altering heart rate.
B) Diuresis: Diuresis involves increased urine production. Although some antihypertensives can have a diuretic effect, valsartan primarily works through mechanisms other than increasing urine output.
C) Vasodilation: Angiotensin II receptor antagonists such as valsartan work by blocking the action of angiotensin II, which leads to vasodilation. This reduction in vascular resistance helps to lower blood pressure and is the primary therapeutic effect of valsartan.
D) Sympatholytic action: This refers to the suppression of sympathetic nervous system activity. Valsartan does not primarily act through sympathetic nervous system modulation but rather through direct vasodilation by blocking angiotensin II receptors.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) Hypertension: Phenytoin is primarily used to manage seizures, and hypertension is not a common side effect associated with its use. While monitoring blood pressure is important for overall health, it is not specifically indicated for detecting common side effects of phenytoin.
B) Peripheral edema: Peripheral edema is not a typical side effect of phenytoin. Common side effects are usually related to oral health and skin changes rather than fluid retention or swelling in the extremities.
C) Hematuria: Hematuria, or blood in the urine, is not commonly associated with phenytoin use. This side effect is more relevant to other medications or conditions, and while monitoring for overall health changes is important, it is not a primary concern with phenytoin.
D) Gingival hyperplasia: Phenytoin is well-known for causing gingival hyperplasia, which is the overgrowth of gum tissue. This is a common and notable side effect of long-term phenytoin use, making it important for the nurse to assess for this symptom in clients receiving the medication.
Correct Answer is C
Explanation
A. Taking an antiemetic medication: This information is not directly relevant before administering misoprostol. Misoprostol does not typically interact with antiemetic medications in a way that would change the administration plan.
B. Allergy to aspirin: While important to know for general medication safety, misoprostol's primary concern is its potential effects on pregnancy rather than an allergy to aspirin.
C. Currently pregnant: Misoprostol is contraindicated in pregnancy due to its potential to induce uterine contractions and cause miscarriage. It is crucial to confirm that the patient is not pregnant before administering this medication.
D. History of glaucoma: While important for other medications, a history of glaucoma is not a primary concern when administering misoprostol.
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