Can Gastric Volume be Accurately Estimated by Ultrasound?
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Original Article
P: 194-200
June 2022

Can Gastric Volume be Accurately Estimated by Ultrasound?

Turk J Anaesthesiol Reanim 2022;50(3):194-200
1. Department of General Surgery, Uşak University Faculty of Medicine, Uşak, Turkey
2. Division of Intensive Care Medicine, Department of Internal Medicine, Ondokuz Mayıs University Faculty of Medicine, Samsun, Turkey
3. Division of Intensive Care Medicine, Department of Anaesthesiology and Reanimation, Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital, İstanbul, Turkey
4. Department of General Surgery, Konya Beyhekim State Hospital, Konya, Turkey
5. Department of Radiology, Konya Beyhekim State Hospital, Konya, Turkey
6. Department of Anaesthesiology and Reanimation, Selçuk University Faculty of Medicine, Konya, Turkey
No information available.
No information available
Received Date: 24.09.2021
Accepted Date: 26.10.2021
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ABSTRACT

Objective:

Knowing the degree of gastric fullness is critical in determining the potential risk of pulmonary aspiration prior to urgent or elective intubation. This study aims to investigate the role of ultrasound in predicting the gastric volume accurately.

Methods:

176 patients who underwent upper gastric endoscopy after 12-hour fasting were examined by gastric US. The patients were ran- domly divided into 6 groups according to the volume of ingested semifluid meal: (1) empty stomach (no volume), (2) 50 mL, (3) 100 mL, (4) 200 mL, (5) 300 mL, and (6) 400 mL. Antral cross-sectional area (CSA) was measured by US after each ingestion.

Results:

We found a strong linear correlation between antral CSA and gastric volume up to 200 mL. The diagnostic performance of ultra- sound was found to be more powerful in the supine position than in the right lateral position. A new mathematical model was established to predict gastric volume. The threshold value for antral cross-sectional area at risk of pulmonary aspiration was determined as 3.1 cm2 by sonographic measurement.

Conclusion:

Ultrasonography could be preferred to gastric endoscopy or scintigraphy in terms of non-invasiveness and easiness, although it still merits further investigation.