aortic cross-clamp
Surgical instrument used to temporarily occlude the aorta during cardiac procedures, stopping blood flow through the vessel.
Full Definition
An aortic cross-clamp is a specialized surgical instrument designed to compress and completely occlude the aorta during cardiac surgery, creating a bloodless operative field while cardiopulmonary bypass maintains circulation to the body. The clamp is typically applied to the ascending aorta proximal to the site of surgical intervention. Cross-clamp time is a critical parameter monitored during surgery, as prolonged occlusion can lead to ischemic complications. The timing of clamp application and removal is carefully coordinated with cardioplegia delivery and other protective measures to minimize myocardial and organ damage.
Usage
Usage note: Cross-clamp time is a critical surgical parameter; distinguish from partial occlusion clamps.
In Context
- "The aortic cross-clamp was applied at 10:15 AM with a total clamp time of 142 minutes." — operative report
- "Gradual removal of the aortic cross-clamp allowed for controlled reperfusion of the myocardium." — operative report