tricuspid regurgitation and ventricular septal defects. Because the intensity of these murmurs is high immediately after the onset of S1, and extends to just before the S2, the S1 and S2 sounds ...

Studies of patients whose echocardiograms had been read as indeterminate were re-reviewed by two clinicians and categorized as definite bicuspid AV, tricuspid AV, or uncertain AV morphology.