Prospective Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Apr 28, 2015; 21(16): 5009-5016
Published online Apr 28, 2015. doi: 10.3748/wjg.v21.i16.5009
Figure 1
Figure 1 Based on the results obtained from intraesophageal manometry and 24-h-long intraesophageal pH/impedance monitoring, the subjects were classified into three groups according to the Rome III criteria: acid reflux-related mechanism (n = 22), non-acid reflux-related mechanism (n = 34), and functional heartburn (n = 22). pH-POS: Excessive intraesophageal acid exposure time; HE: Hypersensitive esophagus (non-excessive esophageal acid exposure time and positive symptom index); FH: Functional heartburn; PPI: Proton pump inhibitor.