Gastric ultrasound performance time and difficulty: a prospective observational study
Authors' conclusion
Approximately 50 scans are required to achieve a baseline performance of 5 min per gastric ultrasound.
Study context
- Population
- Adults undergoing elective or emergency surgery receiving routine pre-operative gastric ultrasound by physicians after structured training (≥30 supervised sonograms)scans by 73 physicians
- Participants
- 2,003 adults
- Primary endpoint
- Factors associated with deviation from a predefined sonography algorithm, performance time and scan difficulty
Methodological detailssingle-centre, regression models
- Single-centre
- Regression models
Primary result
As reported in the abstract
Gastric ultrasound performance time and factors associated with difficulty, duration and algorithm deviation
- Performance time, median (IQR [range])
- 5 (4-6 [1-20]) min
- Number of scans after structured training to achieve median performance time
- 20-27
- BMI per 5 kg.m-2 increase, difficulty: OR (95%CI) 1.57 (1.35-1.83)
- p < 0.001
- BMI per 5 kg.m-2 increase, duration: percentage change coefficient (95%CI) 1.03 (1.02-1.05)
- p < 0.001
- Male sex, difficulty: OR (95%CI) 3.31 (2.28-4.88)
- p < 0.001
- Male sex, duration: percentage change coefficient (95%CI) 1.08 (1.04-1.12)
- p < 0.001
- Trauma surgery, algorithm deviation: OR (95%CI) 3.26 (1.88-5.68)
- p < 0.001
- ASA physical status 3 or 4, algorithm deviation: OR (95%CI) 1.86 (1.21-2.88)
- p = 0.0049
- Emergency surgery, algorithm deviation: OR (95%CI) 1.86 (1.20-2.89)
- p = 0.006
Original publication
Gastric ultrasound performance time and difficulty: a prospective observational study. Anaesthesia. Published 15 November 2024. doi:10.
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