Objective:to investigate evidence in the literature on procedures for measuring gastric tube
insertion in newborns and verifying its placement, using alternative procedures to
radiological examination. Method:an integrative review of the literature carried out in the Cochrane, LILACS,
CINAHL, EMBASE, MEDLINE and Scopus databases using the descriptors “Intubation,
gastrointestinal” and “newborns” in original articles. Results:seventeen publications were included and categorized as “measuring method” or
“technique for verifying placement”. Regarding measuring methods, the measurements
of two morphological distances and the application of two formulas, one based on
weight and another based on height, were found. Regarding the techniques for
assessing placement, the following were found: electromagnetic tracing, diaphragm
electrical activity, CO2 detection, indigo carmine solution,
epigastrium auscultation, gastric secretion aspiration, color inspection, and
evaluation of pH, enzymes and bilirubin. Conclusion:the measuring method using nose to earlobe to a point midway between the xiphoid
process and the umbilicus measurement presents the best evidence. Equations based
on weight and height need to be experimentally tested. The return of secretion
into the tube aspiration, color assessment and secretion pH are reliable
indicators to identify gastric tube placement, and are the currently indicated
techniques.