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以经食道心房调搏为工具,用Narula法测定73人的SACT_(N_1)和SACT_(N_2)分为3组,第Ⅰ组正常人34人,第Ⅱ组非病窦的心脏病患者20人,第Ⅲ组病窦患者19人,其中31人同时用Strauss法测定SACT_(S_1)和SACT_(S_2)。结果表明:一、第Ⅰ与Ⅲ组的SACT_(N_1)及SACT_(N_2)之间有非常显著差异(P<0.001);第Ⅱ与Ⅲ组的SACT_(N_1)及SACT_(N_2)之间也有显著差异(P值分别<0.02及<0.005),提示SACT可以作为诊断病窦的一个指标。二、SACT_(N_1)与SACT_(S_1)及SACT_(N_2)与SACT_(S_2)之间都有显著的直线相关性,提示Narula法和Strauss法都可用来测定SACT。三、两种测定法对窦性自律性有明显的抑制作用,Nafula法比Strauss法影响更大,用A_3A_4替代A_1A_1计算得到的SACT_(N_2)和SACT_(S_2)能更好地反映窦房传导的情况。
Using transthoracic atrial pacing as a tool, 73 patients with SACT_ (N_1) and SACT_ (N_2) were divided into 3 groups by Narula method, 34 patients in group Ⅰ were normal, 20 patients in group Ⅱ , 19 patients with group Ⅲ sick sinus, 31 of them simultaneously measured SACT_ (S_1) and SACT_ (S_2) by strauss method. The results showed that there was a significant difference between SACT_ (N_1) and SACT_ (N_2) in groups Ⅰ and Ⅲ (P <0.001). There were also differences between SACT_ (N_1) and SACT_ (N_2) Significant differences (P values <0.02 and <0.005, respectively) suggest that SACT can be used as an indicator for the diagnosis of sick sinusoids. There is a significant linear correlation between SACT_ (N_1) and SACT_ (S_1) and SACT_ (N_2) and SACT_ (S_2), suggesting that both Narula method and Strauss method can be used to determine SACT. Third, the two assays significantly inhibited sinus self-regulation. The Nafula method had a greater effect than the Strauss method. The SACT_ (N_2) and SACT_ (S_2) calculated by A_3A_4 instead of A_1A_1 can better reflect the sinoatrial conduction Case.