Accuracy of Gastric Ultrasound to Diagnose a "Full Stomach". A Bayesian Framework

November 21, 2017 updated by: University Health Network, Toronto

During surgery, there is a risk that food or liquid in the stomach might be forced back up the throat where it could enter the lungs (aspirate) and result in serious complications or even death. This is why people going for surgery are required not to eat before their surgery. However, in emergency situations it is often not possible to know whether a patient has recently eaten or not. Anesthesiologists have recently developed an ultrasound test to determine if there is content in a patient's stomach and how much. This test involves an ultrasound examination of the abdomen and taking some measurements on the ultrasound screen.

The purpose of this study is to determine how accurate these measurements are. In other words, how good are we at detecting an empty stomach from one that has liquids, or solids in it. You are being asked to participate in this study because we require non-pregnant volunteers in order to answer the aforementioned study question.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

80

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5T 2S8
        • Toronto Western Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 85 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy volunteers aged 18 to 85 years
  • Male or female
  • American Society of Anesthesia physical status classification I and II
  • Height greater than 145 cm
  • Ability to understand the study protocol and provide informed consent

Exclusion Criteria:

  • Subjects predisposed to have an increased residual gastric volume at baseline (eg. Diabetes or any known dysmotility)
  • History of major upper gastrointestinal disease (including hiatus hernia or prior gastroduodenal surgery)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: Fasting
Participant will remain fasted following initial gastric ultrasound
Experimental: Food intake
Participant will ingest either 250mL of clear fluid (apple juice) or 250mL of coffee and a muffin following initial gastric ultrasound
Other: Food intake
Either drinking a cup of clear liquid, or having a cup of coffee and a muffin

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Ultrasound's sensitivity to identify a "full stomach"
Time Frame: 5 minutes
Scanning the stomach to identify if the participant is fasted or has ingested liquid or solids
5 minutes

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Ultrasound's accuracy in detecting a "full stomach"
Time Frame: 5 minutes
Assessing how accurate the Ultrasound machine is in detecting either liquid or solid contents in the participant's stomach after ingestion
5 minutes
Inter/Intra-rater reliability of observer in detecting a "full stomach"
Time Frame: 5 minutes
Determining the reliability of observers in being able to similarly detect a full stomach
5 minutes

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Health Network, Toronto

Investigators

  • Principal Investigator: Anahi Perlas, MD, Staff Anesthesiologist

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 26, 2015

Primary Completion (Actual)

June 1, 2017

Study Completion (Actual)

June 1, 2017

Study Registration Dates

First Submitted

October 26, 2015

First Submitted That Met QC Criteria

October 26, 2015

First Posted (Estimate)

October 27, 2015

Study Record Updates

Last Update Posted (Actual)

November 24, 2017

Last Update Submitted That Met QC Criteria

November 21, 2017

Last Verified

November 1, 2017

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 14-7883-BE

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Aspiration

Clinical Trials on Food intake

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Angola

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe