The nurse is administering nitroglycerin intravenously to alleviate chest pain. What is the therapeutic action of this medication?
Increases glomerular filtration, resulting in decreased venous return.
Enhances the contractility of the myocardium, increasing oxygen delivery.
Produces an immediate analgesic effect, relieving chest pain.
Increases the coronary blood supply and decreases the afterload.
The Correct Answer is D
Choice A rationale
Increasing glomerular filtration would result in increased urine output, not decreased venous return. This action is not directly related to the therapeutic action of nitroglycerin.
Choice B rationale
While enhancing the contractility of the myocardium would increase oxygen delivery, this is not the primary action of nitroglycerin. Nitroglycerin primarily works by dilating the blood vessels, which reduces the amount of work the heart has to do and increases the blood supply to the heart muscle.
Choice C rationale
Nitroglycerin does not produce an immediate analgesic effect. While it can relieve chest pain, it does so by increasing blood flow to the heart, not by acting as an analgesic.
Choice D rationale
Nitroglycerin increases the coronary blood supply and decreases the afterload314. By dilating the blood vessels, nitroglycerin reduces the amount of work the heart has to do and increases the blood supply to the heart muscle. This is the primary therapeutic action of nitroglycerin in alleviating chest pain.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D"]
Explanation
Choice A rationale
Rheumatoid arthritis is an autoimmune disease that primarily affects the joints. While it can increase the risk of cardiovascular disease due to systemic inflammation, it is not typically considered a direct cause of secondary hypertension.
Choice B rationale
Coarctation of the aorta, a congenital condition characterized by a narrowing of the aorta, can cause secondary hypertension. This is because the narrowing can increase resistance to blood flow, leading to increased pressure.
Choice C rationale
Increased intracranial pressure (ICP) can cause secondary hypertension as part of Cushing’s reflex, a physiological response to protect the brain from damage. This reflex can lead to an increase in systemic blood pressure in an attempt to maintain cerebral perfusion.
Choice D rationale
Renal disease is a common cause of secondary hypertension. The kidneys play a crucial role in regulating blood pressure, and damage to the kidneys can lead to hypertension.
Choice E rationale
Colon cancer is not typically associated with secondary hypertension. While some cancers can produce substances that increase blood pressure, colon cancer is not commonly associated with this phenomenon.
Correct Answer is D
Explanation
Choice A rationale
Aortic regurgitation is a condition where the aortic valve doesn’t close tightly, causing blood to leak back into the left ventricle. This condition can lead to left heart failure but is not typically associated with right heart failure.
Choice B rationale
Mitral regurgitation is a disorder in which the mitral valve on the left side of the heart does not close properly. This condition can lead to left heart failure but is not typically associated with right heart failure.
Choice C rationale
Aortic stenosis is a narrowing of the aortic valve opening. This condition can lead to left heart failure but is not typically associated with right heart failure.
Choice D rationale
Tricuspid regurgitation is a disorder in which the heart’s tricuspid valve does not close properly, causing blood to flow backward into the right atrium. This condition can lead to right heart failure, especially when associated with pulmonary hypertension.
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