The pressure data is displayed in color by pressure topography, allowing easy analysis of the internal pressure and peristalsis of the entire esophagus, including the upper esophageal sphincter (UES) and lower esophageal sphincter (LES) [6, 7].
Kahrilas, "Classifying esophageal motility by pressure topography characteristics: a study of 400 patients and 75 controls," The American Journal of Gastroenterology, vol.
Pandolfino, "Esophageal motility disorders in terms of pressure topography: the Chicago classification," Journal of Clinical Gastroenterology, vol.
Kahrilas et al., "Chicago classification criteria of esophageal motility disorders defined in high resolution esophageal pressure topography," Neurogastroenterology and Motility, vol.
A real-time esophageal pressure topography
was displayed in monitor using Trace software, version 1.2.
et al., 2000 "Esophagogastric function pressure topography
after fundoplication," Surgery, Vol.127(2), pp.200-08
Pressure topography was analyzed manually using Mano-ViewTM software with data tracings viewed in the color pressure topography mode.
In conjunction with HRM, impedance monitoring allowed tracking the swallowed bolus in relation to esophageal pressure topography. Bolus transit time (BTT) defined as time elapsed between bolus entry at 19 cm above the reference line and bolus exit at 5 cm above the reference line .
HRIM depicts both esophageal pressure topography and bolus disposition on the same graphic, and thus the most comprehensive assessment of peristaltic integrity is achieved.
Carlson et al., "Distal esophageal spasm in high-resolution esophageal pressure topography: defining clinical phenotypes," Gastroenterology, vol.
Kahrilas, "Weak peristalsis in esophageal pressure topography: classification and association with dysphagia," The American Journal of Gastroenterology, vol.