Guidelines for Verification of Gastric Tube Location in Adult Hospitalised Patients: A Systematic Review.
Cornelius Baving, Markus Grebe, Franziska Wefer and 2 others
PMID 41913447WHAT IT FOUND
Adult hospital tube guidelines disagree on verification.
They discourage auscultation, support aspirate pH and marking, and advise x-ray if doubt remains, but only one guideline was high quality.
Key findings
01Three of the six included guidelines recommend chest x-ray with the whole tube visible before medication, nutrition or water is given through a gastric tube.
02Two guidelines recommend initial aspirate pH testing, and the included guidelines use different pH cut-offs, below 5 or below 5.5.
03Five guidelines recommend marking the tube at the nose and checking external length, and three guidelines advise against using auscultation in general.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
Only six adult hospital guidelines were included, so the recommendations reflect a small and heterogeneous set. The search was limited to English and German and to two databases plus registers, so relevant guidelines may have been missed. Most included guidelines had weak methodological transparency, and only one met the high-quality threshold. The review compares guideline recommendations, not patient outcomes, so it cannot show which method reduces misplacement or harm. It applies only to adult hospitalised patients, not children, home care or nursing homes.
Declared interests
The authors report no funding and no conflicts of interest. The review also found that all included guidelines disclosed funding or conflicts poorly.
The easy way to misread this
Do not conclude that aspirate pH alone reliably confirms tube position. The guidelines differ on pH thresholds, and the review reports limited evidence when pH is used alone.