Confirming nasogastric tube position: Methods and restrictions: A narrative review

Mehdi Rahimi; Khosro Farhadi; Hossein Ashtarian; Frahnaz Changaei

Journal of Nursing and Midwifery Sciences

The Official Journal of Mazandaran University of Medical Sciences

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Confirming nasogastric tube position: Methods and restrictions: A narrative review

Author(s):

Mehdi Rahimi

^1,*,

Khosro Farhadi²,

Hossein Ashtarian³,

Frahnaz Changaei⁴

1Department of Medical Surgical Nursing, Nursing & Midwifery School, Lorestan University of Medical Sciences, Lorestan, Iran

2Department of Anesthesia and Assistant Professor of Kermanshah University of Medical Sciences, Kermanshah, Iran

3Department of Nursing Educations and Management, Nursing and Midwifery School, Kermanshah University of Medical Sciences, Kermanshah, Iran

4Department of Midwifery, Nursing and Midwifery School, Lorestan University of Medical Sciences (LUMS), Lorestan, Iran

Journal of Nursing and Midwifery Sciences:Vol. 2, issue 1; 55-62

Published online:Jun 20, 2015

Article type:Review Article

Received:Sep 16, 2014

Accepted:Nov 23, 2014

How to Cite:Rahimi M, Farhadi K, Ashtarian H, Changaei F. Confirming nasogastric tube position: Methods and restrictions: A narrative review.J Nurs Midwifery Sci.2015;2(1):e141384.

Abstract

Background and Purpose: Inserting a nasogastric tube, though a common clinical procedure with widespread use for critically ill
patients, can produce unexpected complications so that tube misplacement into the lungs is a potential complication with serious
consequences. The reliability of common bedside methods to differentiate between pulmonary and gastric placement has not been
acceptable. The goal of this study was to review the diagnostic accuracy of methods in detecting inadvertent airway intubation and
verifying correct placement of nasogastric tube and restrictions.
Methods: A review of Pub Med, Medline and CINAHL databases has been conducted to identify peer-reviewed, English language,
human subject research studies published between the years 1994 and 2013.The research was conducted on the confirmation,
methods and restrictions of NGT in the adult's population. Out off 151 English publications, 29 were duplicates and 2 were animal
studies. Quality assessments, data extractions and analysis were completed on all included studies.
Results: Although methods for assessing correct NGT location at the bedside are available, each has its limitations. The
methods include auscultation (the most common method), PH testing of aspirates, capnography, insertion under direct
vision and magnetic detection. All studies used X-rays as the reference standard for comparison since auscultation is
unreliable.
Conclusion: While none of the existing bedside methods for testing the position of nasogastric tubes

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