A comparative study of 22-channel water-perfusion system and solid-state system with 36-sensors in esophageal manometery

Background To compare the characteristics between 22-channel water-perfusion manometry (WPM) and solid-state manometry (SSM) with 36 sensors of the pressure measurements, as well as patients’ discomfort indices in nose and pharynx, the preparation and operation time of the manometry.