Significance of effective-height caliper for the repair of quadricuspid aortic valve.

Fig. 1. A photograph captured intraoperatively (a) and schematic representation of QAV (b) as viewed through the aortotomy. The right and left coronary cusps were almost normal in size and had sufficient effective height. While the noncoronary cusp (NCC) was relatively thick and large, the accessory cusp (AC) was too small to independently act as a competent cusp. The raphe between the NCC and AC was restricted toward the annulus (arrow). R, right coronary cusp; L, left coronary cusp; N, non-coronary cusp; A, accessory cusp.