Fig. 4

a, b, c, d. Transesophageal echocardiogram findings after asynergy. The left main trunk blood flow became undetectable in the range of 38.5 cm/s; 30-degree scanning angle. (a), but was picked up by reducing the blood flow range to 19.3 cm/s; 30-degree scanning angle. (b). Proximal left anterior descending artery (#6) flow was narrowly detectable; 30-degree scanning angle. (c), and no distal circumflex artery (#11) flow was observed; 120-degree scanning angle. (d)