... (tip) of the cusp projecting about2 mm into the sinus, with the corners (sides) of the cusp projecting slightly into the aorta, such t hat flowenters the sinus during systole at the center of the ... exceeds that of the lin-ear flow in the aorta, and the valve begins to close. Ifflow does not enter the sinus at the cusp tip, then the vortex, necessary to counter the pressure in the aorta toprevent ... troponin was noted duringextensive work-up of the event. The only abnormalfinding was on coronary angiography, showing a n irre-gularity in the LAD suspicious for an intramural coron-ary. Lacking...