title: Predictors of treatment response in patients with non-erosive reflux disease.
abstract: BACKGROUND
  Up to 40% of patients with non-erosive reflux disease (NERD) fail to respond to proton pump inhibitor therapy.
  
  
  OBJECTIVE
  To determine useful prognostic factors for response to and suppression in NERD.
  
  
  METHODS
  A pooled analysis from three multicentre, double-blind trials of patients with a normal endoscopy and heartburn for 4 days or more during the 7 days prior to the start of each treatment. Patients received omeprazole 20 mg, esomeprazole 20 mg or esomeprazole 40 mg/day for 4 weeks. Complete resolution of heartburn was defined as no heartburn during the last week.
  
  
  RESULTS
  Of 2458 patients included, complete heartburn resolution was achieved in 63% at the end of 4 weeks treatment. Response on days 5-7 provided an 85% probability of complete resolution of heartburn at 4 weeks; the probability of complete heartburn resolution at 4 weeks in those with moderate to severe symptoms on days 5-7 was 22%. Sensitivity and specificity of no heartburn on days 5-7 was 55% and 83% respectively. Patient demographics, duration of symptoms, medications used, other symptoms and body mass index were not predictors.
  
  
  CONCLUSIONS
  Assessment of heartburn resolution during the first week of therapy was the best predictor of treatment success at 4 weeks in non-erosive reflux disease, but was suboptimal as a test.
authors.affiliation: Division of Gastroenterology and Hepatology, Mayo Clinic and Mayo Clinic College of Medicine, Rochester, MN 55905, USA. talley.nicholas@mayo.edu
authors.forename: N J
authors.initials: NJ
authors.lastname: Talley
authors.forename: D
authors.initials: D
authors.lastname: Armstrong
authors.forename: O
authors.initials: O
authors.lastname: Junghard
authors.forename: I
authors.initials: I
authors.lastname: Wiklund
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D004311:Double-Blind Method; D005260:Female; D005764:Gastroesophageal Reflux / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015337:Multicenter Studies as Topic; D054328:Proton Pump Inhibitors; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome
chemical_list: D054328:Proton Pump Inhibitors