Related Experiment Video

Updated: Sep 21, 2025

Author Spotlight: Point-of-Care Ultrasound for Gastric Content Assessment and Risk Stratification in Perioperative Care
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Ultrasound-Determined Residual Gastric Volume after Clear-Fluid Ingestion in the Paediatric Population: Still a

Mohd Zaid Abdul Kadir1, Saw-Kian Cheah1, Aliza Mohamad Yusof1

  • 1Department of Anaesthesiology and Intensive Care, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia.

Children (Basel, Switzerland)
|May 28, 2022
PubMed

Insights

Children

Area of Science:

  • Pediatric Anesthesiology
  • Gastrointestinal Physiology

Background:

  • Current pediatric fasting guidelines may lead to prolonged fasting times.
  • This can cause stress during anesthesia induction in children.
  • Optimizing clear fluid intake intervals is crucial.

Purpose of the Study:

  • To compare residual gastric volume (RGV) after 1 versus 2 hours of clear fluid ingestion in fasted children.
  • To assess parental satisfaction with fasting protocols.

Main Methods:

  • Prospective study of 106 pediatric patients.
  • Gastric antrum ultrasonography (USG) in supine and right lateral decubitus (RLD) positions.
  • Measurement of RGV at baseline, 1 hour (T1), and 2 hours (T2) after ingesting 3 mL/kg clear fluid.

Main Results:

  • RGV was significantly higher at T1 compared to T2 (p < 0.001).
  • No significant difference in RGV between baseline (T0) and T2 (p = 0.30).
  • Parental satisfaction was similar for both 1-hour and 2-hour intervals (p = 0.158).

Conclusions:

  • A 1-hour clear fluid intake interval results in significantly higher RGV than a 2-hour interval in pediatric patients.
  • Both supine and RLD positions are reliable for RGV measurement.
  • Fasting protocols can be adjusted to improve patient and parental experience.

Keywords:
fastinggastric antrumpulmonary aspirationultrasonography

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