text: <unk>  is a disorder in which the heart's<unk> icuspid valve does not close properly, causing blood to flow backward (leak) into the right upper heart chamber (atrium) when the right lower heart chamber (ventricle) contracts.
option_0: Tricuspid regurgitation
option_1: Aortic regurgitation
option_2: Mitral regurgitation
option_3: Pulmonic regurgitation
option_4: Mitral stenosis
option_5: Tricuspid stenosis
option_6: Aortic stenosis
option_7: Bicuspid aortic stenosis