Results showed that SAN functions for SACT, SNRT, CSNRT, Wencke-bach A -VB points and 2 : 1 block points were not significant (P > 0.05) .

• 结果显示:术后SACT、SNRT、CSNRT、房室传导文氏阻滞点、2:1阻滞点与术前比较差异均无显著意义(P>0.；05)