Normal values for combined impedance-pH monitoring based on 95th percentile data in healthy volunteers off and on acid-suppressive therapy

		Off therapy (N = 60)	On therapy (PPI twice daily) (N = 20)
Esophageal pH data
Percent time pH <4	Total	6.7%	1.3%
	Upright	9.7%	2.2%
	Recumbent	2.1%	0.0%
Esophageal MII-data
Nr. reflux episodes	Total	73	48
	Acid	55	12
	Non-acid	27	44

PPI: proton pump inhibitor; MII: multichannel intraluminal impedance.

Data from:
1. Shay, S, Tutuian, R, Sifrim, D, et al. Twenty-Four Hour Ambulatory Simultaneous Impedance and pH Monitoring: A Multicenter Report of Normal Values From 60 Healthy Volunteers. Am J Gastroenterol 2004; 99:1037.
2. Tutuian, R, Mainie, I, Agrawal, A, et al. Normal values for ambulatory 24-h combined impedance-pH monitoring on acid suppressive therapy. Gastroenterology 2006; 130 Suppl 2:A171.

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خرید پکیج

Normal values for combined impedance-pH monitoring based on 95th percentile data in healthy volunteers off and on acid-suppressive therapy