Gastroesophageal reflux-like symptoms are associated with hyposalivation and oropharyngeal problems in patients with asthma.
2020
Abstract Background Previous studies have suggested a significant relationship between hyposalivation and inhalation therapy-induced oropharyngeal problems. However, salivary secretion tests are not widely performed in daily clinical practice. In fact, xerostomia, the complaint of dry mouth, may not indicate hyposalivation. Therefore, we determined the clinical factors associated with hyposalivation in patients with asthma. Methods This study is a post-hoc analysis of our previous studies. Adult patients with asthma on maintenance inhalation therapy were enrolled. The participants completed questionnaires on oropharyngeal symptoms and underwent a salivary secretion test. Symptom severity was evaluated using a numerical rating scale (NRS), and salivary secretion was measured using the modified cotton roll method. Using logistic regression analysis, we identified the clinical factors associated with hyposalivation. Results In total, 531 patients completed the questionnaire (43.8 ± 16.9 years and male/female = 171/360), and 234 patients successfully performed a salivary secretion test, of which 126 (53.8%) were diagnosed with hyposalivation ( Conclusions Age, xerostomia, and GERLS were significantly related to hyposalivation in patients with asthma. To identify oropharyngeal problems in these patients, a careful assessment of the suspected symptoms of gastroesophageal reflux may be useful.
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