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The first 25 slides, exactly as they appear. The full deck has 58 content slides.
Anaesthesiology
Point-of-Care Gastric Ultrasound for Estimation of Aspiration Risk
Built from Practical Ultrasound in Anesthesia
What’s inside
8 sections · 58 slides
Overview
- Point-of-care gastric ultrasound at a glance
Aspiration risk and pathophysiology
Why gastric content matters, how aspiration happens, and fasting as the first defence.
- How common pulmonary aspiration is
- Why aspiration is dangerous
- The chain that leads to aspiration
- What anaesthesia does to the airway
- Fasting guidelines
- What an 'empty' stomach means after fasting
- Older ways to measure gastric emptying
Anatomy and indications
The stomach's five parts, the antrum the scan targets, and when to scan.
- Stomach anatomy in five parts
- Why the antrum is the target
- Stomach anatomy and antral relationships
- The five layers of the stomach wall
- When POCGUS helps
- Conditions that raise aspiration risk
- Medical and Surgical Problems Predisposing to High Pulmonary Aspiration Risk
Image acquisition
Probe choice, machine settings, patient position, and the three-view scanning technique.
- Choosing the probe
- Transducer requirements
- Patient positioning
- Patient positioning for the scan
- The sagittal view
- The axial view and back to sagittal
- The three-view protocol
Sonoanatomy
Reading empty, clear-fluid, and solid stomachs — and telling the stomach from bowel.
- Finding the antrum
- How the stomach differs from bowel
- The empty stomach
- The empty antrum on ultrasound
- A stomach with clear fluid
- Clear fluid: the 'starry night' antrum
- A stomach with solids or semisolids
- Milk- or yogurt-like contents
- Solid contents: the 'frosted glass' antrum
- Solid contents filling the antrum
Qualitative and quantitative interpretation
Grading the antrum, measuring cross-sectional area, and turning it into volume and risk.
- Qualitative reading: the basics
- The three-point grading system
- How the grades map to risk
- Quantifying volume: measuring CSA
- Two ways to measure CSA
- The adult volume formula
- How reliable the measurement is
- Classifying aspiration risk
- Classifying pulmonary aspiration risk
Special patient cohorts
Obesity, pregnancy, paediatrics, critical illness and emergency care.
- Obesity
- Pregnancy
- Pregnancy volume models
- Paediatrics
- Paediatric volume models
- Critically ill patients
- Emergency care settings
Strengths, limitations and conclusion
What the tool does well, where it can mislead, and how it fits clinical care.
- POCGUS strengths
- POCGUS limitations
- When not to rely on it
- Conclusion
- 1.5 mL/kg
- References
- References (continued)
- References (continued)
- References (continued)
- Practical Ultrasound in Anesthesia for Critical Care and Pain Management