What substance should the pedicle graft be soaked in prior to anastomosis during a CABG?

The use of a papaverine-soaked sponge prior to anastomosis during a coronary artery bypass grafting (CABG) procedure serves a specific purpose. Papaverine is a vasodilator, which helps to prevent vasospasm in the grafted vessels. By soaking the pedicle graft in a papaverine solution, surgeons can enhance blood flow to the graft by relaxing the smooth muscle in the vessel walls. This is particularly important in CABG, as ensuring optimal blood supply through the grafted arteries is crucial for the success of the surgery.

In contrast, other options do not serve the same function as effectively. Heparin solution is an anticoagulant and is typically used to prevent clot formation, not specifically to influence vascular tone. Cold saline can be used for cooling purposes but does not provide the vasodilatory benefits necessary for promoting graft patency. Lidocaine solution is primarily utilized for local anesthesia and does not have any significant impact on vasodilation or graft function in this context.