Arruda A, Campos Filho O, Ribeiro E, Petrizzo A, Andrade J L, Carvalho A C, Buffolo E, Martinez E, Mathias Júnior W
Escola Paulista de Medicina-UNIFESP.
Arq Bras Cardiol. 1997 Dec;69(6):413-9. doi: 10.1590/s0066-782x1997001200009.
To study the value of Doppler echocardiography as a tool for the evaluation of left internal thoracic artery graft (LITAG) patency in patients who underwent coronary revascularization using minimally invasive bypass surgery without extracorporeal circulation.
The first 12 consecutive patients were studied after coronary artery bypass surgery using a 5 MHz Doppler transducer. Doppler signals for the systolic and diastolic flow velocities were preferably obtained in the second intercostal space. All patients underwent coronary angiography while hospitalized.
The exam was feasible in 93% of patients. Doppler flow pattern was predominantly diastolic (pattern A) in patients with patent anastomoses (6/7). In patients with occluded anastomoses (4/4) Doppler flow pattern was predominantly systolic (pattern B) (p = 0.003).
Internal thoracic artery flow pattern as measured by Doppler echocardiography after minimally invasive coronary artery bypass graft surgery is an accurate method for identifying LITAG patency.
研究在接受非体外循环微创搭桥手术进行冠状动脉血运重建的患者中，多普勒超声心动图作为评估左内乳动脉移植物（LITAG）通畅性工具的价值。
使用5兆赫多普勒换能器对连续的12例患者在冠状动脉搭桥手术后进行研究。收缩期和舒张期血流速度的多普勒信号最好在第二肋间间隙获取。所有患者住院期间均接受冠状动脉造影。
93%的患者该项检查可行。吻合口通畅的患者（6/7）多普勒血流模式主要为舒张期（A模式）。吻合口闭塞的患者（4/4）多普勒血流模式主要为收缩期（B模式）（p = 0.003）。
微创冠状动脉搭桥移植术后通过多普勒超声心动图测量的胸廓内动脉血流模式是识别LITAG通畅性的准确方法。
