1 MCQs in Medicine for NEET PG
A 42-year-old woman with rheumatic mitral stenosis (mitral valve area 1.2 cm²) presents with exertional dyspnea and orthopnea. She is in atrial fibrillation with a ventricular rate of 110 bpm. Transthoracic echocardiography shows a mean gradient of 18 mmHg across the mitral valve and normal left ventricular ejection fraction. Which of the following pharmacological interventions is MOST appropriate as the first-line agent to improve her symptoms?
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