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实验性早期急性心肌梗塞30只犬,用电极端弯曲可控导管经食管实时记录心室晚电位(ESO-VLPs),与心外膜梗塞区实时记录心室晚电位(IZ-VLPs)对比研究结果。窦性心律时IZ-VLPs阳性76.6％,ESO-VLPs阳性70％,其敏感性、特异性及预测值各为78.3％,57.1％及85.7％。程序心室刺激诱发持续性室速(VTs)9只,室颤(VF)11只,IZ-VLPs阳性和ESO-VLPs阳性犬诱发VTs/VF的预测值为78.3％比81％(P>0.05),IZ-VLPs和ESO-VLPs阴性未诱发VTs/VF的预测值为71.4％比66.6％(P>0.05)。表明食管实时记录心室晚电位是可行的。
Thirty dogs with experimental early acute myocardial infarction were studied by real-time recording of ESO-VLPs in controllable catheter endoscopy and real-time recording of ventricular late potentials (IZ-VLPs) in epicardial infarction area. In sinus rhythm, the positive rate of IZ-VLPs was 76.6% and the positive rate of ESO-VLPs was 70%. The sensitivity, specificity and predictive value of IZ-VLPs were 78.3%, 57.1% and 85.7% respectively. Programmed ventricular stimulation induced sustained ventricular tachycardia (VTs) 9 and ventricular fibrillation (VF) 11, IZ-VLPs positive and ESO-VLPs positive dog-induced VTs / VF predictive value of 78.3% compared with 81% (P> 0.05) , And the predictive value of VTs / VF of non-induced IZ-VLPs and ESO-VLPs was 71.4% versus 66.6% (P> 0.05). That esophageal real-time recording of ventricular late potential is feasible.