Background and Objectives: There is a lack of consensus regarding the clinical presentation and diagnosis of laryngopharyngeal reflux (LPR). The aim of this study was to explore voice-related abnormalities in a group of LPR patients, diagnosed with a 24-hour oropharyngeal pH monitoring. Patients and Methods: Eighty-two patients with voice-related problems participated in the study. Diagnosis of LPR was made using a 24-hour oropharyngeal pH monitoring. Patients were divided accordingly into positive and negative pH groups. Comparisons between the two groups were done, including results of clinical presentation, Voice Handicap Index-10 (VHI-10), reflux symptom index (RSI), reflux finding score (RFS), and acoustic measurements. The correlation was conducted between Ryan scores and other variables including VHI-10, RSI, and RFS. Results: Significant differences were found between the two groups for RSI and VHI-10. No significant differences were found between the two groups regarding clinical presentation, RFS or acoustic measures. Significant positive correlations were found between the Ryan composite measurements and both severity ratings (VHI-10, RSI). Conclusion: LPR clinical presentation appears to be non-specific in terms of symptoms and laryngeal findings. LPR appears to have an effect on the patients' self-perception of voice problems. Further studies are needed to clarify the effect of LPR on acoustic measurements.

Keywords:
Laryngopharyngeal reflux, Oropharyngeal pH, Voice problems
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2014
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