Dr. Davis started with a discussion of the surgeon factors that can affect conversion rates. Medial and lateral approaches seem to have similar learning curves. “You’ve got to just stick to one approach. There’s not going to be any difference in terms of [frequency of] conversions,” said Dr. Davis.
Vascular pedicle ligation is the easiest approach, he said. Flexure mobilizations can be challenging, but they aren’t necessarily easier in open surgery. “If you’re struggling to mobilize the flexure, that may be the time to keep struggling because often when we go to open surgery [it doesn’t] get any easier,” said Dr. Davis.
The transverse colon mesentery is most difficult. “If you’re early in your learning curve, that’s something that’s going to be a little more difficult. The learning curve is between 50 and 60 cases,” said Dr. Davis.
Adhesions are the most common cause of conversions, but Dr. Davis said he generally starts with an attempt at laparoscopy. When he has a questionable case, he notifies the operating room staff that it should be prepared for a conversion so they don’t open a lot of disposables.
Other causes of conversion include pedicle or solid organ bleeding, hollow viscus injuries, and anastomotic complications. “As you get more up on your learning curve, you’ll be more comfortable in managing a hole in the bowel laparoscopically. ... Often you can manage those through your extraction site, so you can temporize that with a stitch and then bring it out and look at it,” said Dr. Davis.
Air leaks while doing an anastomosis on the sigmoid can also lead to conversion. “If you have a Pfannenstiel incision, you can do it through the Pfannenstiel, but if you have no incision, you are probably going to want to do some kind of incision to take a peek at that,” said Dr. Davis.