Abstract
The most effective current treatment option for patients suffering from laryngopharyngeal reflux (LPR) is the use of proton pump inhibitors (PPIs). Compared to other PPIs, esomeprazole seems to provide best 24-h control of intragastric acid. However, some patients remain resistant to medical acid suppression with PPIs. The aim of this investigation was to identify the number of non-responders among patients suffering from LPR being treated by esomeprazole 40 mg once daily (officially approved maximum dosage). Between June 2004 and January 2006, 27 patients suffering from LPR diagnosed by dual-probe pH monitoring were treated with esomeprazole 40 mg once daily. After 13-54 days (mean 28 days) while still under PPI-treatment, the 24-h pH-study was repeated in order to control the effectiveness of therapy. Patients with at least a reduction of the reflux area index (RAI) compared to the result before treatment were categorized as responders. Furthermore, the number of patients with a measurable reduction of proximal reflux episodes under PPI-treatment was quantified. Repeated pH monitoring during PPI therapy revealed a reduction of the RAI in 22 of 27 patients. Five patients, however, showed a higher RAI despite medical treatment (19%). In 13 patients (48%), treatment with 40 mg esomeprazole once daily reduced the RAI to a normal value (<6.3). In 18 of 27 patients, the number of proximal reflux episodes has decreased (67%). In a number of patients suffering from LPR, treatment with esomeprazole 40 mg once daily did not provide any measurable proximal acid reduction. Repeated pH monitoring during treatment is an adequate diagnostic tool to control the therapeutic effect of PPIs objectively and to identify non-responders at an early point.
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