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pH testing for detecting the position of nasogastric tubes in adults and children

Kalia, Sanjeev; Hall, Jenny; El-Habbal, Magdi; Imrie, Cameron; Arabiat, Diana H; Shields, Linda; Allgar, Victoria; Wadhawan, Jay; Greenman, John; Elliott, Barbara


Sanjeev Kalia

Jenny Hall

Magdi El-Habbal

Cameron Imrie

Diana H Arabiat

Linda Shields

Victoria Allgar

Barbara Elliott


Linda Shields


This is the protocol for a review and there is no abstract. The objectives are as follows: Our objective is to determine if there is sufficient evidence to recommend the use of pH testing (the intervention under scrutiny) for verification of correct placement of nasogastric tubes in adults and children. To this end, we will attempt to answer the following questions: 1. In adults and children, is pH testing an effective and safe method for determining whether nasogastric tubes are correctly positioned in the stomach before feeding (or delivery of any fluid) begins? 2. What evidence is there about the risk of adverse events in the case of incorrect placement? For this review, pH testing is defined as: litmus paper, pH indicator test strips, pH meters. These will be tested against other methods used for detecting placement of nasogastric tubes, including visual examination of aspirate, auscultation with insufflation of air, detection of air bubbles in a bowl of water, X-ray, ultrasonography, endoscopy, enzyme analysis of aspirate, capnography, and other methods that do not rely on measurement of pH.


Kalia, S., Hall, J., El-Habbal, M., Imrie, C., Arabiat, D. H., Shields, L., …Elliott, B. (2009). pH testing for detecting the position of nasogastric tubes in adults and children. Cochrane Database of Systematic Reviews, 28126.

Journal Article Type Review
Acceptance Date Dec 31, 2009
Online Publication Date Jan 21, 2009
Publication Date Sep 18, 2009
Journal Cochrane.Database.Syst.Rev.
Print ISSN 1469-493X
Publisher Cochrane Collaboration
Peer Reviewed Peer Reviewed
Issue 1
Pages 28126
Public URL