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首页> 外文期刊>Journal of Clinical Ultrasound: JCU >Effect of graft patency on the prediction of myocardial viability by dobutamine stress and myocardial contrast echocardiography before coronary artery bypass surgery
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Effect of graft patency on the prediction of myocardial viability by dobutamine stress and myocardial contrast echocardiography before coronary artery bypass surgery

机译：冠状动脉搭桥术前多巴酚丁胺负荷和心肌对比超声心动图对移植物通畅性对心肌生存能力预测的影响

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Background: Myocardial functional recovery after revascularization is considered the "gold standard" for myocardial viability (MV) assessment. However, the patency of the revascularized coronary artery affects myocardial functional recovery in patients subjected to coronary artery bypass grafting (CABG). The influence of graft patency on viability results has not been widely studied. Purpose: We evaluated the effect of graft patency on the prediction of MV after CABG by myocardial contrast echocardiography (MCE) and low-dose dobutamine stress echocardiography (LD-DSE). Methods: Fifty-three subjects with chronic ischemic heart disease scheduled for CABG were divided randomly into groups A (n=26) and B (n=27). They underwent MCE and LD-DSE preoperatively. Patients were followed up 12 months after CABG. Group B patients underwent multislice computed tomography angiography to assess CABG patency, and patients with obstructed grafts were excluded. Group A patients were not subjected to multislice CT angiography. The accuracy of MCE and LD-DSE for assessing MV between the two groups was compared. Results: The accuracy and positive predictive values of MCE and LD-DSE for predicting MV were higher in group B than in group A (p<0.05). Conclusions: Preoperative LD-DSE and MCE ability to predict MV depends on the patency of CABG.
机译：背景：血运重建后的心肌功能恢复被认为是评估心肌生存力（MV）的“黄金标准”。然而，在接受冠状动脉旁路移植术（CABG）的患者中，血运重建的冠状动脉的通畅会影响心肌功能的恢复。移植物通畅性对生存力结果的影响尚未得到广泛研究。目的：我们评估了心肌造影超声心动图（MCE）和小剂量多巴酚丁胺负荷超声心动图（LD-DSE）对CABG术后移植物通畅性的预测价值。方法：将53例计划用于CABG的慢性缺血性心脏病患者随机分为A组（n = 26）和B组（n = 27）。他们在术前接受了MCE和LD-DSE。在CABG后12个月对患者进行了随访。 B组患者进行了多层计算机断层血管造影以评估CABG的通畅性，并排除了移植物阻塞的患者。 A组患者未接受多层CT血管造影。比较了MCE和LD-DSE评估两组之间MV的准确性。结果：B组MCE和LD-DSE预测MV的准确性和阳性预测值均高于A组（p <0.05）。结论：术前LD-DSE和MCE预测MV的能力取决于CABG的通畅性。

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