W1800 Utilizing Intraluminal Pressure Gradients to Predict Esophageal Clearance: A Validation Study

AGA Abstracts

W1801 Does Gas Reflux Provoke Any Symptoms of GERD? Clinical Significance of Gas Reflux in Patients with GERD By Multichannel Intraluminal Impedance and pH Study Kyu Sung Chung, Joon Seong Lee, Hee Hyuk Im, Yun Jung, Tae Hee Lee, Won Young Cho, Soo Hoon Eun, Bong Min Ko, Su Jin Hong, Jin-Oh Kim, Joo Young Cho, Moon Sung Lee, Chan Sup Shim, Boo Sung Kim Background: Recent studies showed gas reflux might play an important role in NERD. Aim: To characterize whether gas reflux brings along reflux associated symptom. Patients and Methods: Thirty one patients diagnosed as GERD by MII-pH with positive symptom index (SI, ≥50%) were recruited. All the refluxate were analyzed in accordance with its composition, such as, liquid and gas reflux and with its acidity, like, acid (pH