What are the most common complications of a nissen fundoplication for gerd?

EARLY or LATE?: Early complications include injury to the stomach, esophagus, or adjacent organs (spleen). Late complications may be due to the wrap being too tight (difficulty swallowing, gas-bloat syndrome) or too loose (persistent reflux). Rarely, nerve injury can lead to diarrhea and/or poor emptying of the stomach.

Bloating: The most common symptom patients have after nissen is bloating but goes away in most cases. The second most common is trouble swallowing and it also resolves on most cases. As in any advanced surgery make sure is done by experienced surgeons.

There are ...: Generic risks such as infection, rare as it is a clean operation. If it is a laparoscopic procedure, there is the risk of conversion to open with a larger incision. The fundoplication might be made too tight making it difficult to swallow. It might also come unwrapped resulting in recurrent reflux symptoms. It might be harder to burp or vomit afterwards. Have a good discussion with your surgeon.