BACKGROUND: Gastroesophageal reflux disease can be associated with extraesophageal symptoms (hoarseness, cough, asthma, and globus). However, these symptoms may have a multifactorial etiology. Proximal pH monitoring has been proposed as a means of identifying patients where reflux is the cause of the extraesophageal symptoms. The aim of this study was to determine whether proximal esophageal or pharyngeal pH monitoring better identified patients with extraesophageal symptoms that improved after antireflux surgery. METHODS: A retrospective chart review was performed to identify all patients who had esophageal and pharyngeal pH monitoring before an antireflux operation. A composite score was used to define an abnormal result with each test. A successful outcome was defined as improvement or resolution of extraesophageal symptoms. RESULTS: There were 20 patients identified. Antireflux surgery led to a successful outcome in 14 patients (70 %). Restech better identified patients with extraesophageal symptoms who had a successful outcome with antireflux surgery (12 of 14 [86 %] based on abnormal Restech versus 5 of 10 [50 %] based on abnormal proximal probe, p = 0.06). Comparing only the 15 patients who had both proximal esophageal and pharyngeal pH monitoring, Restech again better identified those who had a successful outcome with antireflux surgery (9 of 10 [90 %] based on abnormal Restech versus 5 of 10 [50 %] based on abnormal proximal probe, p = 0.05). The positive and negative predictive values for symptomatic improvement after a fundoplication were better for an abnormal Restech score than for an abnormal proximal esophageal score (80 vs. 71 % and 60 vs. 38 %, respectively). In two patients with a successful outcome, Restech was the only positive test. CONCLUSIONS: In patients with extraesophageal reflux symptoms, proximal esophageal pH monitoring failed to identify half of the patients who had a successful outcome after antireflux surgery. In contrast, an abnormal Restech pH test was present in 90 % of patients with a successful outcome. Further, a negative Restech study more reliably indicated the absence of reflux-induced extraesophageal symptoms. Our results indicate that Restech pharyngeal pH monitoring should be utilized in the evaluation of patients with extraesophageal symptoms that may be associated with reflux disease.
BACKGROUND:Gastroesophageal reflux disease can be associated with extraesophageal symptoms (hoarseness, cough, asthma, and globus). However, these symptoms may have a multifactorial etiology. Proximal pH monitoring has been proposed as a means of identifying patients where reflux is the cause of the extraesophageal symptoms. The aim of this study was to determine whether proximal esophageal or pharyngeal pH monitoring better identified patients with extraesophageal symptoms that improved after antireflux surgery. METHODS: A retrospective chart review was performed to identify all patients who had esophageal and pharyngeal pH monitoring before an antireflux operation. A composite score was used to define an abnormal result with each test. A successful outcome was defined as improvement or resolution of extraesophageal symptoms. RESULTS: There were 20 patients identified. Antireflux surgery led to a successful outcome in 14 patients (70 %). Restech better identified patients with extraesophageal symptoms who had a successful outcome with antireflux surgery (12 of 14 [86 %] based on abnormal Restech versus 5 of 10 [50 %] based on abnormal proximal probe, p = 0.06). Comparing only the 15 patients who had both proximal esophageal and pharyngeal pH monitoring, Restech again better identified those who had a successful outcome with antireflux surgery (9 of 10 [90 %] based on abnormal Restech versus 5 of 10 [50 %] based on abnormal proximal probe, p = 0.05). The positive and negative predictive values for symptomatic improvement after a fundoplication were better for an abnormal Restech score than for an abnormal proximal esophageal score (80 vs. 71 % and 60 vs. 38 %, respectively). In two patients with a successful outcome, Restech was the only positive test. CONCLUSIONS: In patients with extraesophageal reflux symptoms, proximal esophageal pH monitoring failed to identify half of the patients who had a successful outcome after antireflux surgery. In contrast, an abnormal Restech pH test was present in 90 % of patients with a successful outcome. Further, a negative Restech study more reliably indicated the absence of reflux-induced extraesophageal symptoms. Our results indicate that Restech pharyngeal pH monitoring should be utilized in the evaluation of patients with extraesophageal symptoms that may be associated with reflux disease.
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