房间隔与右心耳起搏对阻止新发房颤的探讨

选取66例病态窦房结综合征患者,均符合双腔起搏器适应证。随机分为两组,一组为右心耳(RAA)起搏36例,另一组为低位房间隔(LAS)起搏30例,随访12个月。 LAS组房颤发生率(3．3%)较 RAA(19．4%)组低；RAA 组 P 波离散度较 LAS 组明显增大(P <0．01)；3个月后 RAA 组左心房容积指数(LAVI)较 LAS 组大。较之 RAA 组,LAS 组 P 波离散度降低、LAVI 减小,在阻止新发房颤方面可能更优。

To investigate atrial septum and right atrial appendage pacing for prevention of new-on atrial fibrillation

66 patients with sick sinus syndrome were enrolled in this study. All patients meeting the indications for dual chamber pacing were randomly divided into two groups: right atrial appendage(RAA) pacing group was made up of 36 patients and low atrial septal(LAS) pacing group was made up of 30 patients. Follow-up was 12 months. The incidence of atrial fibrillation(AF) was lower in LAS group(3. 3% ) compared with the RAA group(19. 4% );P wave dispersion in RAA group was significantly higher than that in the LAS group (P < 0. 01). After 3 months of the operation, left atrial volume index(LAVI) in RAA group was significantly larger than that in the LAS group. In LAS group compared with the RAA group P wave dispersion and LAVI were significantly lower after operation in sick sinus syndrome. LAS pacing was superior to RAA pacing in preventing new atrial fibrillation.