Reflux characteristics of 113 GERD patients with abnormal 24-h multichannel intraluminal impedance-pH tests24小时食管多通道腔内阻抗-pH监测阳性的113例胃食管反流病(GERD)患者的胃食管反流特点

To analyze reflux parameters by means of combined multichannel intraluminal impedance and pH (MII-pH) monitoring in patients with gastroesophageal reflux disease (GERD) symptoms off medication, and to find the reflux characteristics of Chinese GERD patients and the influences of gender, age, body posture, and body mass index (BMI) on gastroesophageal reflux (GER).