病态窦房结综合征伴房室传导延迟AAI与DDD起搏模式右心功能的超声评价

Echocardiography in evaluating right ventricular function of patients with sick sinus syndrome and atrioventricular delay with perianal abscesson under AAI and DDD pacing modes

目的探讨AAI与DDD起搏模式下病态窦房结综合征伴房室传导阻滞患者的右心功能。方法 35例病态窦房结综合征伴Ⅰ度房室传导阻滞植入DDD双腔起搏器患者,先用程控仪将起搏器程控为DDD模式,最后程控为AAI模式。超声心动图检测患者2种起搏模式下的各参数变化情况。结果 DDD起搏模式下的RVPEP、RVPEP/RVET、Sm、Tei指数明显高于AAI起搏模式(P<0.05),E/Em低于AAI起搏模式(P<0.05)。结论 AAI起搏模式右心的收缩和舒张功能均优于AV间期优化的DDD起搏模式。

Objective To explore the right ventricular function of patients with sick sinus syndrome and atrioventricular delay under AAI and DDD pacing modes.Methods Thirty-five sick sinus syndrome combined with Ⅰ degree atrioventricular block implantation of DDD patients with dual chamber pacemaker were included in the study.The program-controlled instrument was used to change the pacemaker to DDD mode first,and then to AAI mode.Echocardiography was employed to detect parameter changes of patients with two kinds of pacing mode.Results RVPEP RVPEP/RVET and Sm,Tei index of DDD pacing mode were significantly higher than those of AAI pacing mode（P〈0.05）.The E/Em of DDD pacing mode was less than that of AAI pacing mode（P〈0.05）.Conclusion The right cardiac systolic and diastolic function of the patients with AV is better under the AAI mode pacing mode than under the DDD mode pacing mode.