In the treatment of angina, the mechanism of action of an organic nitrate is:
Increased contractility and heart rate.
Slowed heart rate and decreased contractility of the heart.
Relaxation of arterial and venous smooth muscle.
Increased peripheral resistance.
The Correct Answer is C
A. Organic nitrates do not increase contractility and heart rate; they typically decrease myocardial oxygen demand.
B. Organic nitrates do not slow heart rate or decrease contractility of the heart.
C. The mechanism of action of organic nitrates in the treatment of angina is the relaxation of arterial and venous smooth muscle, leading to vasodilation and decreased myocardial oxygen demand.
D. Organic nitrates do not increase peripheral resistance; they typically cause vasodilation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Shaving excess hair from the skin before applying a nitroglycerin patch helps ensure proper adhesion and absorption of the medication.
B. Used nitroglycerin patches should be folded with the medication area to the inside and disposed of in a manner that prevents accidental exposure to others.
C. Nitroglycerin patches are typically worn for a specified duration, often 12 to 14 hours, before being removed and replaced with a new patch.
D. Using multiple nitroglycerin patches simultaneously is not recommended and could lead to overdose.
Correct Answer is ["A","D","E"]
Explanation
A. Dizziness is a common side effect of nitroglycerin due to its vasodilatory effects.
B. Hyponatremia and hyperkalemia are not typically associated with nitroglycerin use.
C. Hyponatremia is not typically associated with nitroglycerin use.
D. Hypotension is a common side effect of nitroglycerin due to its vasodilatory effects.
E. Reflex tachycardia, or an increase in heart rate, can occur as a compensatory response to the drop in blood pressure caused by nitroglycerin.
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