Which antihypertensive medication is not recommended for patients with chronic obstructive pulmonary disease (COPD) and asthma?

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.

Choice A rationale
Prolonged PR intervals occur with first-degree AV block, not typically with pericarditis.
Choice B rationale
Clubbing of the fingers is a loss of the normal angle between the base of the nail and the skin. This finding can be found in endocarditis, congenital defects, and/or prolonged oxygen deficiency. It is not a typical manifestation of pericarditis.
Choice C rationale
Widened pulse pressure occurs with valvular heart disease, not typically with pericarditis.
Choice D rationale
Pulsus paradoxus is a sign of cardiac tamponade, a serious complication of pericarditis. As the compression of the heart increases, decreased left atrial filling decreases cardiac output.