含餐8 h食管pH监测与常规24 h pH监测对胃食管反流病的诊断价值比较

目的探讨含餐8h食管pH监测对胃食管反流病(GERD)的诊断意义,并以常规24hpH监测为标准验证其灵敏度及特异度。方法对2003年3月至2006年9月北京大学人民医院消化科221例患者进行食管测压和pH监测。首先由系统计算24h DeMeester积分,≥14.72分诊断为胃食管反流病。入选患者晚餐开始共计8h的监测数据,同样计算DeMeester积分,相同的标准诊断胃食管反流病。比较两种方法的一致性及积分的相关性。结果221例患者经常规24hpH监测诊断胃食管反流病124例,正常97例,含餐8hpH监测方法诊断胃食管反流病120例,正常101例。含餐8h的灵敏度为93.5%,特异度95.9%,经Kappa及Mc-nemar检验2种方法具有良好的一致性,部分结果的差异不具有显著性。2种检测方式DeMeester积分的相关系数为0.929。结论含餐8小时监测法和24hpH监测法具有良好的一致性,有望用于GERD特别是内镜阴性GERD的诊断。

Comparison between 8-hour pH monitoring test in gastroesophageal reflux disease and 24-hour pH monitoring

Objective To determine the diagnostic value of 8-hour pH monitoring in gastroesophageal refulux disease(GERD)and compare its sentivity and specificity with that of 24-hour monitoring.Methods Patients had been given esophageal manometry and ambulatory 24-hour pH monitoring.The 8-hour datas were analyzed from the standard ambulatory 24-hour pH recording.GERD was confirmed if DeMeester Score was no less than 14.72 according to the routine pH monitoring,then DeMeester score was reanalyzed according to 8-hour period,the same dignosis cirteria was used for 8-hour pH monitoring.Results Totally 221 patients met the entrance criterion.The 8-hour test had a sensitivity of 93.5% when compared to the 24-hour test and a specificity of 95.9%.Kappa test and Mc-nemar test verified the two monitor periods were with considerable consistency.The Pearson coefficient correlation was 0.929 with P value less than 0.001.Conclusion The 8-hour analysis is as sensitive and specific as the routine test for demonstrating GERD.By using this method,patients may suffer less discomfort and appear enhanced compliance.