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High-resolution impedance manometry (HRIM) measures both intraluminal pressure and impedance. Bolus retention and distensibility can be evaluated by HRIM. HRIM is performed to assess esophageal motility and swallow function. Esophageal bolus retention is evaluated with parameters, such as bolus flow time (BFT) and esophageal impedance integral (EII) ratio. EII ratio may be a better indicator for assessment of esophageal bolus retention than esophagram. Esophageal distention could be evaluated by pressure-flow analysis or distention-contraction profileDistention-contraction profile using HRIM. Pharyngeal HRIM can evaluate meso-pharyngeal contraction and upper esophageal sphincter relaxation during swallow, which allows assessment of swallow function. HRIM during post-prandial periods can detect rumination, supra-gastric belching and excessive transient lower esophageal sphincter. HRIM is a better method to assess rumination syndrome, excessive supra-gastric belching than impedance monitoring alone.

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Esophageal Motility Test, High-Resolution Impedance Oesophageal Manometry

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  • 发表日期：

    2026年

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  • Shiko Kuribayashi

摘要

High-resolution impedance manometry (HRIM) measures both intraluminal pressure and impedance. Bolus retention and distensibility can be evaluated by HRIM. HRIM is performed to assess esophageal motility and swallow function. Esophageal bolus retention is evaluated with parameters, such as bolus flow time (BFT) and esophageal impedance integral (EII) ratio. EII ratio may be a better indicator for assessment of esophageal bolus retention than esophagram. Esophageal distention could be evaluated by pressure-flow analysis or distention-contraction profileDistention-contraction profile using HRIM. Pharyngeal HRIM can evaluate meso-pharyngeal contraction and upper esophageal sphincter relaxation during swallow, which allows assessment of swallow function. HRIM during post-prandial periods can detect rumination, supra-gastric belching and excessive transient lower esophageal sphincter. HRIM is a better method to assess rumination syndrome, excessive supra-gastric belching than impedance monitoring alone.