Management of PPI and Reglan-Resistant GERD

Diagnostic Approach

• The American Gastroenterological Association recommends performing upper endoscopy to assess for erosive esophagitis, Barrett's esophagus, and structural abnormalities, followed by prolonged wireless pH monitoring off PPI (96-hour preferred) if endoscopy shows no significant findings, to confirm true GERD versus functional disorders before escalating therapy 1, 2
• Upper endoscopy should include assessment for erosive esophagitis using Los Angeles classification, Hill grade of flap valve at the diaphragmatic hiatus, axial hiatus hernia length, and Barrett's esophagus with Prague classification 1, 2
• If Los Angeles grade B or higher esophagitis or long-segment Barrett's esophagus (≥3cm) is found, GERD is confirmed and treatment escalation can proceed directly 1, 2
• Prolonged wireless pH monitoring off PPI therapy (96-hour monitoring preferred) should be performed if endoscopy shows normal findings or only LA grade A esophagitis, to objectively confirm GERD versus functional disorders 1, 3, 2

Treatment Optimization

• The American College of Gastroenterology recommends confirming the patient is taking PPI 30 minutes before meals, as improper timing dramatically reduces efficacy 2
• Consider switching to twice-daily dosing if not already implemented 1
• Add alginate antacids for breakthrough symptoms 1, 2
• Add nighttime H2 receptor antagonist for nocturnal symptoms 1
• Add baclofen for regurgitation or belch-predominant symptoms, though side effects may limit use 1
• Add prokinetic agents for coexistent gastroparesis, noting that metoclopramide alone has not been proven effective for GERD symptom control, but may help when gastroparesis coexists 1

Surgical and Endoscopic Interventions

• Offer surgical or endoscopic options when GERD is objectively confirmed by pH monitoring and medical therapy optimization has failed 1, 2
• Laparoscopic fundoplication and magnetic sphincter augmentation are effective surgical options for proven GERD 1, 2
• Transoral incisionless fundoplication is an effective endoscopic option in carefully selected patients 1, 2
• For obese patients with proven GERD, Roux-en-Y gastric bypass serves as both primary anti-reflux intervention and weight loss surgery 1, 2
• Avoid sleeve gastrectomy in GERD patients as it can worsen symptoms 2

Management of Functional Disorders

• Provide pharmacologic neuromodulation (primarily antidepressants) for functional heartburn or reflux hypersensitivity 1
• Refer for behavioral interventions including hypnotherapy, cognitive behavioral therapy, diaphragmatic breathing, and relaxation strategies 1, 3, 2
• Consider tapering PPI therapy in patients with physiologic acid exposure and no erosive disease 3

Critical Pitfalls to Avoid

• Do not empirically escalate PPI dosing or add multiple medications without first confirming the diagnosis with objective testing 2
• Do not continue long-term PPI without establishing definitive diagnosis through endoscopy and possibly pH monitoring within 12 months of initiation 1, 2

Patient Education and Shared Decision-Making

• Provide standardized educational material on GERD mechanisms, weight management, lifestyle modifications, and the brain-gut axis relationship 1, 3
• Emphasize PPI safety to address patient concerns that may affect compliance 1, 3
• Develop care plan using shared decision-making model, explaining risks and benefits of diagnostic testing and treatment escalation 1, 3