Assessing gastric volume and emptying in pediatric surgery patients

Gastric Assessment of Pediatric Patients Undergoing Surgery

Observational Boston Children's Hospital · NCT05674643

This study tests if using ultrasound to measure stomach size and how quickly it empties is reliable for kids having surgery, compared to a standard test, to help keep them safe during anesthesia.

Quick facts

Study typeObservational
Enrollment60 (estimated)
Ages2 Years to 18 Years
SexAll
SponsorBoston Children's Hospital Academic / other
Locations1 site (Boston, Massachusetts)
Trial IDNCT05674643 on ClinicalTrials.gov

What this trial studies

This observational study aims to evaluate the reliability of gastric ultrasound in measuring gastric volume and emptying in pediatric patients undergoing elective surgery. It will compare ultrasound assessments with the acetaminophen absorption test, a gold-standard method for determining gastric emptying. The study will include two cohorts based on age and anesthesia induction plans, focusing on inter-rater and intra-rater variability in ultrasound measurements. The goal is to enhance pre-operative assessments and improve patient safety during anesthesia.

Who should consider this trial

Good fit: Ideal candidates are pediatric patients aged 2 to less than 18 years with ASA classification 1-2 undergoing elective surgery.

Not a fit: Patients with a history of gastrointestinal surgery, known GI dysmotility, or those allergic to acetaminophen may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved pre-operative assessments, reducing the risk of aspiration pneumonia in pediatric patients.

How similar studies have performed: While this approach is innovative, similar studies have shown promise in using ultrasound for gastric assessments, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Perioperative patients with ASA classification 1-2
* Ages: 2 years- less than 18 years
* Locations: Longwood and Waltham campuses of Boston Childrens Hospital

Exclusion Criteria:

* History of gastrointestinal surgery
* Gastrostomy
* Known GI dysmotility (cohort 1 only)
* Acetaminophen allergy (cohort 1 only)
* Liver or renal dysfunction- pre-diagnosed or, if available, when serum biomarkers are 2 standard deviations above the highest value considered normal for age. (cohort 1 only)
* Consumption of acetaminophen in the 4 hours prior (cohort 1 only)

Where this trial is running

Boston, Massachusetts

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions FastingDelayed Gastric EmptyingAspiration PneumoniaRespiratory Aspiration of Gastric Contentgastric ultrasoundpre-operative fasting
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.