Objective To observe the effect of cardiac function and reducing ventricular pacing and rapid atrial arrhythmia with the auto AV search algorithm. Methods One hundred patients implanted with two types of DDD/R pacemakers (AV Search 50 cases, non AV Search 50 Cases) were investigated in one year of follow-up study. The percent of ventricular pacing,atrial high frequence event, plasma atrial natriuretic peptide(ANP) level and echocardiograph were recorded. Results Patients implanted with AV Search DDD/R had a significant decrease in percentage of ventricular pacing 3,6 and 12 months after implantion( 18.7% ±5.6% vs 82. 4% ± 10. 2% , 19. 8% ±6.6% vs 77. 3% ±9.5%, 18.4% ±7.3% vs 79.2% ± 8.6% , all P < 0.05). The left ventricular end diastolic diameter and left atrial diameter showed improvement and the left ventricular ejection fraction was increased in AV Search group (P < 0.05). The plasma ANP level and atrial high rate events were all decreased in AV Search group(203.10 ±28.20 pg/ml vs 298.80 ±31.50 pg/ml ,18 ±9 times vs 39 ± 11 times, P < 0.05). Conclusion DDD/R with AV Search is superior to non AV Search DDD/R in reducing unnecessary ventricular pacing,atrial high rate events and improving cardiac function.%目的 观察自动AV间期搜索功能双腔起搏器减少心室起搏的有效性及对心功能和快速房性心律失常的影响.方法 100例植入DDD/R起搏器的患者(有AV搜索功能50例,无AV搜索功能50例),术后1年内程控获取右室起搏百分比、高频心房事件、检查超声心动图及测试血浆心房利钠肽(ANP)值.结果 有AV搜索功能组术后3,6,12个月右室起搏百分比明显小于无AV搜索功能组(18.7％±5.6％vS 82.4％±10.2％,19.8％±6.6％ vs77.3％±9.5％,18.4％±7.3％vs 79.2％±8.6％,P均＜0.05).有AV搜索功能组左室舒张末内径、左房内径、左室射血分数均明显改善(P均＜0.05)；ANP水平明显降低(203.10±28.20 pg/ml vs 298.80±31.50pg/ml,P ＜0.05)；高频心房事件也显著减少(18±9次vs39 ±11次,P＜0.05).结论 有AV搜索功能起搏器明显减少病窦综合征患者右室起搏比例,改善心功能,并减少高频心房事件.
展开▼
