Vandenplas Y, Helven R, Goyvaerts H, Sacré L
Academisch Ziekenhuis Kinderen Vrije Universiteit Brussel, Belgium.
Gut. 1990 Apr;31(4):374-7. doi: 10.1136/gut.31.4.374.
The reproducibility of 24 hour oesophageal pH monitoring was studied in 30 infants and children including the proportions of the investigation time with a pH less than 4 (reflux index), the number of episodes with a pH less than 4 or lasting longer than five minutes, and the duration of the longest episodes with a pH less than 4. Twenty four hour pH monitoring was performed using identical equipment on two consecutive days under similar conditions. Pearson correlation coefficients range from 0.88 to 0.98. The results obtained on two consecutive days were similar. The reflux index and the number of reflux episodes greater than five minutes were the most reproducible parameters. Despite the many patient related factors influencing pH data, the reproducibility of 24 hour pH monitoring data are satisfactory for routine clinical application.
对30名婴幼儿和儿童进行了24小时食管pH监测的重复性研究，包括pH小于4的监测时间比例（反流指数）、pH小于4或持续超过5分钟的发作次数，以及pH小于4的最长发作持续时间。在相似条件下，连续两天使用相同设备进行24小时pH监测。Pearson相关系数范围为0.88至0.98。连续两天获得的结果相似。反流指数和持续超过5分钟的反流发作次数是最具重复性的参数。尽管有许多与患者相关的因素影响pH数据，但24小时pH监测数据的重复性对于常规临床应用来说是令人满意的。
