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  • Title: Prospective evaluation of duodenogastroesophageal reflux in gastroesophageal reflux disease patients refractory to proton pump inhibitor therapy.
    Author: Kunsch S, Neesse A, Linhart T, Nell C, Gress TM, Ellenrieder V.
    Journal: Digestion; 2012; 86(4):315-22. PubMed ID: 23128301.
    Abstract:
    BACKGROUND: Duodenogastroesophageal reflux (DGER) is considered an independent risk factor for complicated reflux disease (gastroesophageal reflux disease; GERD). However, the role of DGER in GERD patients refractory to proton pump inhibitors (PPI) remains poorly understood. METHODS: 85 patients with clinical reflux symptoms and a history of ineffective response to PPIs were enrolled in the study. Patients with elevated reflux measurement (pH and/or Bilitec measurement; n = 47) received pantoprazole 80 mg for 8 weeks. Clinical outcome was defined as response (≤2 symptoms/week) or nonresponse (≥3 symptoms/week). RESULTS: Of the 47 patients with elevated reflux measurement, 30 were classified as responders and 17 as nonresponders. Treatment with pantoprazole resulted in a significant reduction of acidic reflux in both PPI responders and PPI nonresponders. In contrast, DGER was only significantly reduced in the PPI responder group (22.8 ± 22.8 vs. 6.6 ± 10.8%; p < 0.05) but not in the PPI nonresponder group (24.5 ± 18.6 vs. 22.2 ± 12.7%; p > 0.05). CONCLUSIONS: The presented study firstly describes that nonresponsiveness to PPI is associated with a limited effect of PPIs on reducing DGER. Thus, persistent DGER may play a key role in mediating reflux symptoms refractory to high-dose PPIs.
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