1) The likelihood of an abnormal esophageal pH for symptomatic GERD patients on b.i.d. PPI is very small. 2) In this group of patients failing b.i.d. PPIs causes other than GERD should be sought.

Several signs of posterior laryngeal irritation (e.g., interarytenoid bar, erythema of the medial wall of the arytenoids), which are generally considered to be signs of laryngopharyngeal reflux, are present in a high percentage of nonsymptomatic individuals, raising question about their diagnostic specificity. In addition, these signs were more often detected with flexible than with rigid laryngoscopes, suggesting that flexible laryngoscopy is more sensitive but less specific in identifying laryngeal tissue irritation.

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