PMID- 32737802 OWN - NLM STAT- MEDLINE DCOM- 20220325 LR - 20220325 IS - 1612-9067 (Electronic) IS - 1612-9059 (Linking) VI - 18 IP - 2 DP - 2021 Apr TI - Association of residual gastric acid secretion with persistent symptoms in gastroesophageal reflux disease patients receiving standard-dose proton pump inhibitor therapy. PG - 380-387 LID - 10.1007/s10388-020-00765-2 [doi] AB - BACKGROUND: Although a third of gastroesophageal reflux disease (GERD) patients are refractory to proton pump inhibitor (PPI) therapy, the underlying mechanism of the refractoriness remains unclear. We compared the level of gastric acid suppression during PPI treatment between responders and non-responders by directly measuring gastric acid secretion in GERD patients taking PPIs. METHODS: Seventy-five consecutive patients receiving standard-dose PPI therapy for GERD were prospectively recruited, irrespective of persistent GERD symptoms. They were asked about their GERD symptoms using a validated questionnaire, and simultaneously underwent both a routine endoscopic examination and a gastric acid secretory testing using an endoscopic gastrin test. Associations between residual gastric acid secretion during PPI treatment and persistent GERD symptoms were analyzed by a logistic regression analysis. RESULTS: Overall, 26 of 75 (34.7%) patients were judged to be positive for persistent GERD symptoms. The patients with and without persistent symptoms showed similar gastric acid secretion levels (1.3 [1.3] mEq/10 min vs. 1.4 [2.0] mEq/10 min). Sufficient gastric acid suppression, defined as < 0.6, was not significantly associated with persistent GERD symptoms (odds ratio 1.1, 95% confidence interval 0.40-3.5). CONCLUSIONS: This study provided solid evidence to support that the gastric acid suppression level during PPI treatment does not differ between patients with and without persistent GERD symptoms. The insignificant role of residual gastric acid in the persistent GERD symptoms suggests that the use of medications other than those that enhance gastric acid inhibitory effects would be an essential approach for the management of PPI-refractory GERD. FAU - Kikuchi, H AU - Kikuchi H AD - Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan. FAU - Fukuda, S AU - Fukuda S AD - Department of Gastroenterology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan. FAU - Koike, T AU - Koike T AD - Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan. FAU - Shimodaira, Y AU - Shimodaira Y AD - Department of Gastroenterology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan. FAU - Watanabe, K AU - Watanabe K AD - Department of Gastroenterology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan. FAU - Saito, M AU - Saito M AD - Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan. FAU - Nakagawa, K AU - Nakagawa K AD - Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan. FAU - Hatta, W AU - Hatta W AD - Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan. FAU - Masamune, A AU - Masamune A AD - Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan. FAU - Iijima, K AU - Iijima K AD - Department of Gastroenterology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan. kiijima@med.akita-u.ac.jp. LA - eng PT - Journal Article DEP - 20200731 PL - Japan TA - Esophagus JT - Esophagus : official journal of the Japan Esophageal Society JID - 101206627 RN - 0 (Proton Pump Inhibitors) SB - IM MH - Disease Progression MH - Gastric Acid MH - *Gastroesophageal Reflux/diagnosis MH - Humans MH - *Proton Pump Inhibitors/therapeutic use OTO - NOTNLM OT - Gastric acid secretion OT - Gastroesophageal reflux diseases OT - Proton pump inhibitors EDAT- 2020/08/02 06:00 MHDA- 2022/03/26 06:00 CRDT- 2020/08/02 06:00 PHST- 2020/04/25 00:00 [received] PHST- 2020/07/24 00:00 [accepted] PHST- 2020/08/02 06:00 [pubmed] PHST- 2022/03/26 06:00 [medline] PHST- 2020/08/02 06:00 [entrez] AID - 10.1007/s10388-020-00765-2 [pii] AID - 10.1007/s10388-020-00765-2 [doi] PST - ppublish SO - Esophagus. 2021 Apr;18(2):380-387. doi: 10.1007/s10388-020-00765-2. Epub 2020 Jul 31.