Which pharmacological interventions are typically utilized in the management of mitral regurgitation, and what is the urgency of valve replacement or repair in the setting of heart failure?
a) Angiotensin-converting enzyme (ACE) inhibitors or angiotensin II receptor blockers (ARBs), diuretics, and beta-blockers; valve replacement or repair is urgent
b) Diuretics, calcium channel blockers, and nitrates; valve replacement or repair is elective
c) Digoxin, vasodilators, and aldosterone antagonists; valve replacement or repair is elective
d) Beta-blockers, antiarrhythmics, and anticoagulants; valve replacement or repair is urgent