Answer 27

27.  Choice B is the correct answer.  Mitral stenosis patients are prone to tachycardia and the mainstay of medical treatment is rate control.  Dyspnea and orthopnea are common presenting symptoms.  Rheumatic fever is the most common cause.  Aortic stenosis can cause tachycardia but is less likely.  Pulmonic regurgitation treatment is usually geared at targeting pulmonary hypertension which is usually the cause.  Tricuspid regurgitation is usually caused by pulmonary hypertension also.