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Related Experiment Video

Updated: Jun 4, 2026

Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation

Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation

Published on: September 22, 2023

Ultrasound visualization of ingested tablets: a pilot study.

Sean Patrick Nordt¹, Colleen Campbell, Anthony Medak

¹Section of Toxicology, Department of Emergency Medicine, University of Southern California, Los Angeles, California 90033, USA. spnordt@hotmail.com

Pharmacotherapy

|March 3, 2011

Summary

This summary is machine-generated.

Ultrasonography is not reliable for detecting ingested tablets in the stomach, showing poor agreement between observers and numerous false results. Further research is needed to assess its utility in acute poisoning cases.

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Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation

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Area of Science:

Medical Imaging
Radiology
Gastroenterology

Background:

Accurate detection of ingested substances is crucial in acute poisoning cases.
Radiographic techniques are often used, but their efficacy can vary.
Ultrasonography offers a non-invasive imaging modality with potential applications in visualizing gastric contents.

Purpose of the Study:

To evaluate the diagnostic accuracy of ultrasonography in visualizing ingested tablets within the human stomach.
To assess the reliability and reproducibility of ultrasonography for this purpose.

Main Methods:

A prospective, ultrasonographer-blinded pilot study was conducted.
Fifteen healthy adults ingested tablets (acetaminophen, ibuprofen, multivitamin) or water.
Two experienced ultrasonographers independently assessed images for tablet presence.

Main Results:

One ultrasonographer achieved 93% accuracy, while the other achieved 40% accuracy.
Interobserver agreement was poor (Cohen κ = -0.25).
Six false positives and four false negatives were recorded, indicating significant diagnostic uncertainty.

Conclusions:

Current evidence does not support using ultrasonography to confirm or exclude the presence of ingested tablets in acute poisoning.
Similar to other radiographic methods, a negative ultrasonography finding does not rule out tablet presence.
Larger studies with more participants and sonographers are required to determine ultrasonography's role in managing acute poisonings.