Henson K D, Geiser E A, Billett J, Alexander J A, Akins E W, Bopitiya C
University of Florida, Gainesville.
Clin Cardiol. 1992 Jun;15(6):462-5. doi: 10.1002/clc.4960150615.
This case report demonstrates a role for transesophageal echocardiography in defining the course of anomalous coronary arteries. Origin of the right coronary artery (RCA) from the left main (LM) (single coronary artery) is an exceedingly rare congenital anomaly. It is not always benign and may result in myocardial infarction. This may be due to compression between the aorta and the pulmonary artery. Transesophageal echocardiography offers a low-risk, noninvasive means of imaging the proximal coronary arteries. In the majority of patients, the proximal segments of the three major coronaries can be clearly visualized. With the addition of color flow, it is possible to visualize flow in most patients. Proximal obstructive lesions can be seen in some patients although sensitivity thus far seems low.
本病例报告展示了经食管超声心动图在明确异常冠状动脉走行方面的作用。右冠状动脉（RCA）起源于左主干（LM）（单一冠状动脉）是一种极其罕见的先天性异常。它并非总是良性的，可能导致心肌梗死。这可能是由于主动脉和肺动脉之间的压迫所致。经食管超声心动图提供了一种低风险、非侵入性的近端冠状动脉成像方法。在大多数患者中，三大冠状动脉的近端节段能够清晰可视化。加上彩色血流成像，大多数患者的血流也能够可视化。在一些患者中可以看到近端阻塞性病变，尽管目前看来敏感性较低。
