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目的 评估彩色室壁动力分析技术 (CK)低剂量多巴酚丁胺负荷超声 (LDDSE)识别存活心肌的价值。方法 2 0例经冠状动脉造影术 (CAG)证实为冠心病 (CHO)的患者 ,术前全部行CK LDDSE检查 ,并与经皮冠状动脉腔内成形术 (PTCA)后实际改善的心肌节段进行对比研究。结果 在PTCA术前行CK LDDSE检查的 32 0个节段中 ,96段无运动 ,术后CK检查有收缩功能储备的 78个节段中 ,术前CK能检查出 70个节段 ,CK LDDSE预测存活心肌的敏感性 89 7% ,特异性 77 8% ,准确性 87 5 %。结论 CK LDDSE识别存活心肌客观、准确、安全 ,具有较高的临床应用价值。
Objective To assess the value of low-dose dobutamine stress ultrasound (LDDSE) in identifying viable myocardium using color-chamber wall dynamics (CK). Methods Twenty-two patients with coronary artery disease (CHD) confirmed by coronary angiography (CAG) underwent CK LDDSE before operation, and were compared with the actual myocardial segments after percutaneous transluminal coronary angioplasty (PTCA) Conduct a comparative study. Results Among the 32 segments of CK LDDSE before PTCA, there were no movement in 96 segments and 78 segments with systolic functional reserve after CK. There were 70 segments of CK LDDSE The predicted viability of surviving myocardium was 89.7%, specificity 77.8%, and accuracy 87.5%. Conclusions CK LDDSE is objective, accurate and safe for identifying viable myocardium and has high clinical value.