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目的 探讨 2 4h食管pH值监测和胃B超检查测定胃排空率对早产儿胃食管反流 (GER)的诊断价值及体位对GER的影响。方法 用 2 4hpH自动记录仪测定 40例早产儿食管下段pH值 ,B超检测胃排空率 ,观察其与GER参数的相关性。结果 40例早产儿中 90 %出现GER ,其中 80 %为“寂静型”。日龄 <14d组及日龄≥ 14d组 ,各项反流指标无显著差异。头部抬高 30°仰卧位组各项反流指标显著低于平卧位组。GER参数与喂奶后 90min胃排空率呈负相关。结论 2 4h食管下段pH监测可早期确诊早产儿GER ,B超测定胃排空率可用于早产儿GER的筛查。早产儿取头部抬高 30°仰卧位 ,可减少GER的发生
Objective To investigate the value of 24 h esophageal pH monitoring and gastric B-ultrasound in the determination of gastric emptying rate in the diagnosis of gastroesophageal reflux (GER) in preterm infants and the effect of body position on GER. Methods The pH values of the lower esophagus of 40 premature infants were detected by 24 hpH automatic recorder and the gastric emptying rate was detected by B ultrasound. The correlation between GER and parameters was observed. Results 90% of 40 premature infants showed GER, of which 80% were “silent type”. There was no significant difference in the indexes of reflux between days 14 days and 14 days. Head elevation 30 ° supine position of the various indicators of reflux was significantly lower than the supine group. GER parameters were negatively correlated with gastric emptying rate 90 min after feeding. Conclusion 24 h early esophageal pH monitoring can be used to diagnose preterm infants with GER. The gastric emptying rate measured by B ultrasound can be used to screen GER in preterm infants. Premature infant head elevation 30 ° supine position can reduce the incidence of GER