Erbel R, Schön F, Leischik R, von Birgelen C, Zeppelini R
Abteilung Kardiologie, Universitätsklinikum-Gesamthochschule-Essen.
Z Kardiol. 1994;83 Suppl 5:41-7.
Transesophageal echocardiography is superior to transthoracic echocardiography in detection of superior to transthoracic echocardiography in detection of left atrial thrombi and spontaneous echocardiographic contrast, particularly in patients with atrial fibrillation and spontaneous echocardiographic contrast, thrombus formation is likely. In addition to the morphology, Doppler-echocardiography can be used to access left atrial appendage function. In patients with lone atrial fibrillation, reduced velocity was found in 60%, and no flow was detected in the left atrial appendage in 40%. These patients had a higher risk for spontaneous echocardiographic contrast and thrombus formation. As left atrial thrombi are found in 12% of patients, transesophageal echocardiography can be used to avoid cardioversion in these patients, which may lead to cerebral or peripheral emboli. Despite ruling out left atrial thrombi, embolism occurred after cardioversion when anticoagulation was insufficient or not performed. Current investigations are undertaken in order to demonstrate the clinical benefit of transesophageal echocardiography in patients with left atrial fibrillation.
经食管超声心动图在检测左心房血栓和自发超声造影方面优于经胸超声心动图，特别是在房颤患者中，自发超声造影提示血栓形成的可能性较大。除了形态学检查外，多普勒超声心动图还可用于评估左心耳功能。在孤立性房颤患者中，60%的患者左心耳血流速度降低，40%的患者左心耳未检测到血流。这些患者发生自发超声造影和血栓形成的风险较高。由于12%的患者存在左心房血栓，经食管超声心动图可用于避免这些患者进行心脏复律，因为这可能导致脑或外周栓塞。尽管排除了左心房血栓，但在抗凝不足或未进行抗凝的情况下，心脏复律后仍会发生栓塞。目前正在进行研究，以证明经食管超声心动图对房颤患者的临床益处。
