ABSTRACT
Background
There are no data of reference values on 24-hour multichannel intraluminal impedance and pH (pH-MII) monitoring in Argentinian populations.
Objective
Our aim was to obtain the normal values of pH-MII variables among healthy asymptomatic volunteers in a metropolitan Health Care Center of Argentina, and to compare them with data already published from other regions around the world.
Methods
A cross-sectional study was undertaken in a tertiary referral center in Buenos Aires. We enrolled healthy subjects and asked them to undergo esophageal pH-MII 24hours monitoring. pH-MII variables were recorded and described.
Results
Median reflux events was 20.5 (25-75%, 95%) interquartile range: (14-46, 50) and proximal reflux episodes was 2.5 (0-10, 11). Sixty percent were acid reflux episodes: 12 (5-29, 38), representing a relatively low value when compared to those reported in European, American and Chinese populations.
Conclusion
Our study shows the first reference of normal values of gastroesophageal reflux in an Argentinian population. We found a total number of reflux events and a total number of proximal reflux events lower than what was reported until this date by other authors.
Keywords:
Normal values; esophagus; 24-hour impedance-pH ambulatory.
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