Anastomotic Techniques for Robotic Beating-Heart Totally Endoscopic Coronary Artery Bypass (TECAB)
Robotic totally endoscopic coronary artery bypass (TECAB)
surgery using the da Vinci surgical robot is an excellent way to provide high
quality, minimally invasive coronary reperfusion to a patient who does not
want, or cannot tolerate, a sternotomy. Many surgeons have mastered robotic
internal mammary artery harvest, but performing the remainder of the operation
proves difficult for most.
This video demonstrates the operation for a 67-year-old man with severe left anterior descending and diagonal disease. Beginning after the left internal mammary artery (LIMA) takedown and identification of coronary targets, two separate techniques for coronary anastomosis on a beating heart are shown.
An end-to-side anastomosis is performed directly to the left anterior descending artery, using the Cardica C-Port™ Flex-A™ distal anastomotic stapler. This device uses a row of interrupted stainless steel staples to rapidly create a high-quality coronary anastomosis, even in low-quality calcified targets such as those seen in this patient.
A sequential side-to-side anastomosis is then created from the mid-LIMA to the diseased diagonal branch. This is performed in a hand-sewn fashion with a Gore-Tex™ suture, using a double shunt technique. One shunt is placed in the coronary to provide adequate coronary perfusion during the anastomosis creation while keeping the field free from blood. The second shunt is placed in the LIMA, to prevent any back-walling while suturing down the graft.
Not only can the grafts be checked visually with the enhanced magnification of the robot, but they are all quantitatively tested using a time-transit flowmetry device. The device is able to check graft patency via multiple parameters, including pulsatility index, blood flow, and percent of diastolic coronary flow. Most patients recover from this operation very quickly with minimal postoperative pain. The target discharge date is postoperative day two.
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2. Srivastava S, Gadasalli S, Agusala M, et al. Beating heart totally endoscopic coronary artery bypass. Ann Thorac Surg. 2010;89(6):1873-1879.
3. Argenziano M, Kats M, Bonatti J, et al. Results of the prospective multicenter trial of robotically assisted totally endoscopic coronary artery bypass grafting. Ann Thorac Surg. 2006;81(5):1666-1674.
4. Bonatti J, Lee JD, Bonaros N, Schachner T, Lehr EJ. Robotic totally endoscopic multivessel coronary artery bypass grafting: procedure development, challenges, results. Innovations (Phila). 2012;7(1):3-8.
Dr Balkhy is a proctor for Intuitive Surgical and a consultant for Dextera Surgical.