Preoperative Gastric Ultrasound and Anaesthetic Management in Patients Undergoing Coronary Artery Bypass Grafting
Key facts
- Where
- Istanbul, TörökországSee the site
Where in Törökország
- Istanbul University Cerrahpaşa Institute of CardiologyIstanbul, TörökországNo longer taking part
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Istanbul University - Cerrahpasa
- Trial code
- NCT07922395
- Record updated
- 2026. november 6.
- Original description
Fasting before surgery does not always ensure that the stomach is empty. Residual gastric contents may be relevant to the risk of stomach contents entering the lungs during anaesthesia.Read full original descriptionShow less
Preoperative Gastric Ultrasound Assessment and Anaesthetic Management in Adults Undergoing Elective Isolated Coronary Artery Bypass Grafting: A Multicentre Prospective Observational Study
Fasting before surgery does not always ensure that the stomach is empty. Residual gastric contents may be relevant to the risk of stomach contents entering the lungs during anaesthesia.
This multicentre prospective observational study will enrol 240 adults scheduled for elective isolated coronary artery bypass grafting at two hospitals in Türkiye. Gastric ultrasound will be performed before any sedative or anaesthetic medication is administered. The study will determine the proportion of patients with high-risk gastric contents despite routine preoperative fasting.
High-risk gastric contents will be defined as any solid or thick contents, or an estimated clear fluid volume greater than 1.5 mL/kg. Associations with patient characteristics, medical conditions, medication use and fasting duration will also be examined.
The anaesthetist's management plan will be recorded before the ultrasound findings are known. After the findings are communicated, any changes in surgical timing, anaesthetic induction, airway management or aspiration precautions will be documented. Fasting practices will not be modified for research purposes, and all clinical decisions will remain with the attending anaesthetist.
Inclusion: Age 18 years or older; Scheduled for elective isolated coronary artery bypass grafting; Prepared according to routine institutional preoperative fasting practices; Provision of written informed consent.
Exclusion: Planned concomitant cardiac surgical procedure; Previous gastric or oesophageal surgery resulting in substantially altered gastric anatomy; Scheduled for emergency or urgent coronary artery bypass grafting; Body mass index of 40 kg/m² or greater; Gastric outlet obstruction or known mechanical gastrointestinal obstruction; Inability to perform gastric ultrasound or obtain reliable measurements because of technically inadequate imaging.