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Updated: Aug 11, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Nocturnal acid breakthrough in children with reflux esophagitis taking proton pump inhibitors
Marian D Pfefferkorn1, Joseph M Croffie, Sandeep K Gupta
1Division of Pediatric Gastroenterology/Hepatology/Nutrition, Indiana University School of Medicine, James Whitcomb Riley Hospital for Children, 702 Barnhill Drive, Indianapolis, IN 46202, USA. mdelrosa@iupui.edu
Insights
Nocturnal acid breakthrough is common in children on proton pump inhibitors for reflux esophagitis. Adding ranitidine did not improve healing, suggesting proton pump inhibitors alone are effective.
Area of Science:
- Pediatric Gastroenterology
- Pharmacology
- Acid Reflux Management
Background:
- Reflux esophagitis is a common condition in children.
- Proton pump inhibitors (PPIs) are a standard treatment for pediatric reflux esophagitis.
- Nocturnal acid breakthrough (NAB) during PPI therapy may impact treatment efficacy.
Purpose of the Study:
- To determine the incidence of nocturnal acid breakthrough in pediatric patients receiving PPIs for reflux esophagitis.
- To compare the healing of esophagitis in children with NAB who received PPIs with or without ranitidine.
Main Methods:
- Prospective, double-blind study involving 18 pediatric patients (ages 1-13).
- Esophagitis assessed via endoscopic and histologic scores.
- Esophagogastric pH monitoring performed at week 3 to identify nocturnal acid breakthrough.
- Patients with NAB were randomized to receive PPIs +/- ranitidine at bedtime.
Main Results:
- Nocturnal acid breakthrough occurred in 89% of patients.
- Esophagitis improved in all patients, with mean endoscopic and histologic scores decreasing significantly (P < 0.0020).
- Symptoms improved significantly (P = 0.0001), but ranitidine supplementation showed no additional benefit.
Conclusions:
- Nocturnal acid breakthrough is highly prevalent in pediatric patients on PPI therapy.
- Despite NAB, esophagitis and symptoms improved with PPIs alone.
- Ranitidine added at bedtime did not provide additional therapeutic benefit for healing or symptom control.
Objectives:
We aimed to determine if nocturnal acid breakthrough occurs in children receiving proton pump inhibitors for reflux esophagitis, and to compare the healing of esophagitis in children with nocturnal acid breakthrough receiving proton pump inhibitors +/- ranitidine.
Methods:
This is a prospective, double-blind study. Endoscopic and histologic esophagitis were scored 0-4 and 0-3, respectively. Patients were treated with a proton pump inhibitor twice daily and esophagogastric pH monitoring was performed at week 3. Patients with nocturnal acid breakthrough were randomized. One group received ranitidine and the other received placebo at bedtime in addition to proton pump inhibitor therapy. Endoscopy was performed on all patients (with pH monitoring on patients with nocturnal acid breakthrough) during the 17th week of therapy.
Results:
We enrolled 18 patients, ages 1 to 13 years (mean = 10.3 years). Mean baseline endoscopic and histologic scores were 3.1 +/- 1.4 and 1.8 +/- 0.7, respectively. Mean dose of proton pump inhibitor was 1.3 mg/kg +/- 0.6. Nocturnal acid breakthrough was documented in 16/18 (89%) patients. Seven patients received ranitidine and 9 received placebo. The reflux index improved: mean of 14.3 at baseline, 2.0 at week 3 (P = 0.0001), and 5.1 at week 17 (P = 0.09). Nocturnal acid breakthrough persisted in 9/12 (75%) patients, 3 of whom received ranitidine at bedtime. Esophagitis improved in all patients following therapy: mean endoscopy and histology scores were 1.6 +/- 1.8 (P = 0.0020) and 0.8 +/- 0.9 (P = 0.0013), respectively. Symptoms significantly improved from a mean score of 2.0 at baseline to 0.4 at week 17 (P = 0.0001).
Conclusions:
Nocturnal acid breakthrough is common in pediatric patients treated with proton pump inhibitors. Reflux index remains normal in spite of nocturnal acid breakthrough. Symptoms and esophagitis continued to improve during therapy in spite of nocturnal acid breakthrough. There appears to be no additional benefit to supplementation with ranitidine at bedtime.
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