Thank you for your question.A temporary increase in acid reflux is more common with tummy tucks due to the muscle tightening, but it can also occur after any surgery. The cause isn't known, but it is likely an effect from medications used at the time of surgery, and in my experience, goes away with time. If it continues I would discuss it with your plastic surgeon or your primary care provider.Best,Dr. Dan KrochmalMAE Plastic SurgeryNorthbrook, IL