Marinskis Germanas, Lip Gregory Y H, Aidietis Audrius, Jurkuvenas Paulius, Kaireviciūte Diana, Jezov Vladimir, Bagdonas Kestutis, Serpytis Pranas, Laucevicius Aleksandras
Int J Cardiol. 2006 Feb 8;107(1):134-5. doi: 10.1016/j.ijcard.2005.01.030.
Amplitude ratios of two adjacent mixed blood oxygen saturation curve peaks in randomly selected strips of ECG were analysed in 32 patients with regular wide-QRS complex tachycardias and 60 control subjects where pacing was performed before ablation of narrow-QRS complex tachycardias. Patients with VT showed different patterns of A-to-V relationships, leading to varying ratios of SpO2 adjacent peak amplitudes, in contrast to patients with aberrant SVTs and 1:1 AV association. Application of a criterion of adjacent SpO2 peaks differing by twofold or more had a sensitivity of 90.0% and specificity of 83.3% to detect AV dissociation during VT. Fluctuations on the mixed oxygen saturation curve may be a useful non-invasive clinical parameter to detect different ventricular filling caused by atrio-ventricular dissociation during VT.
对32例规则性宽QRS波群心动过速患者以及60例窄QRS波群心动过速消融术前进行起搏的对照受试者，分析随机选取的心电图条带上两个相邻混合血氧饱和度曲线峰值的振幅比。与伴差异性室内传导的室上性心动过速患者和1:1房室传导患者相比，室性心动过速患者表现出不同的A-V关系模式，导致相邻SpO2峰值振幅比值各异。应用相邻SpO2峰值相差两倍或更多这一标准来检测室性心动过速期间的房室分离，其敏感性为90.0%，特异性为83.3%。混合血氧饱和度曲线上的波动可能是检测室性心动过速期间房室分离引起的不同心室充盈的有用非侵入性临床参数。
