leak test
Intraoperative assessment to detect anastomotic or staple line integrity, typically performed using contrast material or air insufflation.
Full Definition
A leak test is a diagnostic procedure performed during or after bariatric surgery to evaluate the integrity of surgical anastomoses or staple lines and detect potential leaks. Intraoperative leak tests may involve insufflation of the surgical site with air while submerged in saline solution, injection of methylene blue through a nasogastric tube, or real-time upper gastrointestinal contrast studies. Postoperative leak tests typically use water-soluble contrast material and fluoroscopic imaging to visualize the surgical anatomy and identify any extravasation of contrast that would indicate a leak. Early detection of leaks through systematic testing protocols is crucial for patient safety and may influence decisions about drain placement or additional surgical intervention.
Usage
Usage note: Specify timing (intraoperative vs. postoperative) and method when documented.
In Context
- "The intraoperative leak test was negative, with no evidence of air bubbles from the gastrojejunostomy." — operative report
- "Routine postoperative leak test on day one showed no extravasation of contrast material." — postoperative note