The results of estimation of SACT in 49 patients are reported. The patients were subdivided into 3 groups,Group SSS comprising 13 patients of SSS,Group B 18 patients of simple sinus bradycardia and control group A 18 patients.

• 本文报告49例 SACT 检查结果,其中 SSS 组13例,单纯窦缓组18例,正常对照组18例。