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 ["C","D"]
Explanation
A. Green beans and bananas do not contain high amounts of omega-3 fatty acids.
B. Bananas do not contain significant amounts of omega-3 fatty acids.
C. Flax seeds are a rich source of alpha-linolenic acid (ALA), a type of omega-3 fatty acid.
D. Salmon is a fatty fish rich in omega-3 fatty acids, particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).
E. Sunflower seeds are not a significant source of omega-3 fatty acids; they are higher in omega-6 fatty acids.
Correct Answer is ["B","C","D"]
Explanation
A. While medication may be necessary for some individuals with high lipid levels, lifestyle modifications should be attempted first.
B. Smoking cessation can help improve lipid profiles and overall cardiovascular health.
C. Increased exercise can help lower lipid levels and improve cardiovascular health.
D. Restricting dietary cholesterol can help lower blood lipid levels.
E. Unsaturated fats, particularly monounsaturated and polyunsaturated fats, are actually beneficial for heart health and should not be restricted.
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