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. 2021 Feb;49(2):101-105.
doi: 10.1002/jcu.22963. Epub 2020 Dec 9.

Validation of sonographic assistance for placement of a nasogastric tube in pediatric patients

Edward Choi  1 , Michael Korostensky  2 , Andrew Walker  1 , Adam Spencer  1
Affiliations

Validation of sonographic assistance for placement of a nasogastric tube in pediatric patients

Edward Choi et al. J Clin Ultrasound. 2021 Feb.

Abstract

Purpose: Enteral access via nasogastric tube (NGT) placement can be essential in the provision of care in pediatric patients. Methods exist to confirm correct placement with success rates between 80% and 85%. Radiographic confirmation remains the "gold-standard," however; it exposes patients to ionizing radiation and fails to provide "real-time" information. In this study, we determined the feasibility of using sonography to assist in the placement of NGT insertions in pediatric patients that have difficulty cooperating.

Methods: Thirty patients requiring NGT placement were stratified into three age groups. Upon NGT insertion, transverse and longitudinal ultrasound images were acquired to visualize tube progression through the esophagus. Subsequently, a focused ultrasonographic exam of the gastric antrum and body were performed. If amenable, an air bolus (1 mL/kg) was injected in the stomach if the NGT was not directly visualized. Following intubation, standard guidelines for NGT position confirmation were performed.

Results: The NGT was visualized in all esophageal views and 52% of gastric views. Subgroup analysis showed that successful visualization of tube placement in the stomach ranged from 40% (7-18 years) to 70% (3-6 years). Eighty percentage of air boluses injected were visualized.

Conclusion: The use of ultrasonography may assist NGT placement in pediatric patients and reduce the incidence of suboptimal placement during insertion. We demonstrated successful NGT visualization through the esophagus regardless of age. NGT visualization in the stomach was challenging; however, injection of an air bolus may improve visualization. Further studies are required to improve the success rate of obtaining gastric views of the NGT.

Keywords: intubation; nasogastric tube; pediatrics; sonography; ultrasound.

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References

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