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Failed Swallows on High-Resolution Manometry Independently Correlates With Severity of LPR Symptoms

Published:September 29, 2020DOI:https://doi.org/10.1016/j.jvoice.2020.09.003

      Summary

      Background

      Abnormal esophageal motility is prevalent in gastroesophageal reflux disease patients; however, its relationship with laryngopharyngeal reflux (LPR) symptom severity remains unclear. Altered esophageal transit may contribute to LPR symptoms. We aimed to examine the relationship between reflux symptom index (RSI), a validated questionnaire for LPR symptoms, and abnormal esophageal motility on high-resolution manometry (HRM).

      Methods

      A total of 133 consecutive patients (55.9 ± 14.6 years, 69.9% female) with suspected LPR referred for HRM and multichannel intraluminal impedance-pH study (MII-pH) at a tertiary center from March 2015 to October 2017 were included. RSI questionnaire was prospectively collected prior to motility testing. Authors analyzing HRM and MII-pH were blinded to RSI findings. Statistical analyses were performed using Student's t test or Pearson's correlation (univariate) and general linear regression (multivariable).

      Results

      Mean RSI was higher among patients with ineffective esophageal motility than those with normal motility (23.7 vs 18.6, P = 0.01). Significant positive correlation was found between RSI and percent failed swallows (R2 = 0.21, P = 0.03), but not percent weak swallows. On multivariable analysis, percent ineffective (failed or weak) swallows was significantly associated with RSI (β-coefficient: 0.072, P = 0.05) after controlling for age, gender, BMI, smoking, prior PPI use, and reflux on MII-pH. When analyzed separately, percent failed swallows (β-coefficient: 0.095, P= 0.02), but not percent weak swallows, independently predicted higher RSI.

      Conclusions

      Ineffective swallows, particularly failed swallows, are independently associated with higher RSI in patients with suspected LPR, even after controlling for reflux on MII-pH. Esophageal dysmotility may play a role in suspected LPR symptoms independent of reflux. HRM should be routinely considered in evaluating these patients.

      Key Words

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