A slipped Nissen fundoplication is fixed with revision surgery, most often performed laparoscopically. The surgeon takes down the original wrap, frees the esophagus and stomach from scar tissue, and creates a new wrap in the correct position. About 77% of patients who undergo revision are symptom-free at nearly five years of follow-up, though the procedure carries higher risks than the original surgery.
What “Slipped” Actually Means
In a successful Nissen fundoplication, the top of the stomach is wrapped around the lower esophagus to create a valve that prevents acid reflux. When a wrap “slips,” the stomach slides upward through the intact wrap, creating a pouch of stomach above the wrap site. This produces an hourglass-shaped deformity where the wrap now sits around the upper stomach instead of around the esophagus where it belongs.
A slipped wrap is one of six recognized types of fundoplication failure. It’s distinct from other problems like the entire wrap herniating up into the chest through the diaphragm, the wrap coming apart entirely, or the wrap being too tight. Each type looks different on imaging and may call for a different surgical approach, which is why precise diagnosis matters before any repair.
Symptoms That Signal a Problem
The most telling sign is that your original reflux symptoms return: heartburn, regurgitation, or a sour taste in the back of your throat. But a slipped wrap can also cause symptoms the original surgery was meant to prevent, plus new ones. Difficulty swallowing is common because the displaced wrap creates a narrowing in the middle of the stomach. You may feel food getting stuck, experience chest pain, or have a bloated feeling that doesn’t resolve with belching. Some people notice they can suddenly vomit again after months or years of being unable to, which signals the anti-reflux barrier has moved out of position.
These symptoms can develop weeks after surgery or years later. If reflux symptoms come back or swallowing becomes progressively harder, that’s worth reporting to your surgical team.
How the Problem Is Diagnosed
A barium swallow is typically the first test. You drink a chalky liquid while X-ray images are taken in real time, which shows exactly where the wrap sits, whether the stomach has slipped through it, and whether a hiatal hernia has recurred. On imaging, a slipped Nissen shows a characteristic stricture in the mid-stomach with a pouch of stomach visible below the diaphragm.
CT scans of the chest and abdomen add a three-dimensional view, helping surgeons see the wrap’s position relative to the diaphragm and surrounding structures. Most patients also undergo endoscopy (a camera passed down the throat) and pressure testing of the esophagus to assess how well it contracts. Together, these tests tell the surgeon exactly what failed and help them plan the revision.
What Happens During Revision Surgery
Revision fundoplication is performed laparoscopically in most cases, through small incisions in the abdomen. The operation is more complex than the original because the surgeon has to work through scar tissue from the first procedure before anything else can happen.
The first step is separating scar tissue (adhesions) that has formed between the liver, stomach, and surrounding structures. This is careful, slow work because the tissue planes from the original surgery are no longer clean. Once the surgeon can clearly identify the esophagus, stomach, and the edges of the diaphragm’s opening, they completely disassemble the old wrap, taking care not to puncture the esophageal or stomach wall.
With the old wrap removed, the surgeon mobilizes enough of the esophagus to pull it back down into the abdomen to its proper length. If the hiatal hernia has recurred, the opening in the diaphragm is repaired with stitches. Then a new wrap is constructed. The surgeon may redo the full 360-degree Nissen wrap, or they may choose a partial wrap (called a Toupet), which covers about 270 degrees of the esophagus. A partial wrap is sometimes preferred during revision because it puts less pressure on tissue that has already been operated on, reducing the chance of post-surgical swallowing difficulty.
Risks Are Higher Than the First Surgery
Revision anti-reflux surgery is a more demanding operation than a first-time fundoplication, and complication rates reflect that. In a systematic review of over 2,100 reoperations, about 21% had some form of intraoperative complication. The most common was accidental injury to the esophagus or stomach wall, occurring in roughly 13% of cases. Scar tissue from the first surgery makes the anatomy harder to identify and the tissue more fragile.
Nerve damage is another concern. The vagus nerve runs along the esophagus and controls stomach emptying. If it’s injured during revision, you can develop delayed gastric emptying, which causes nausea, bloating, and early fullness after meals. The risk is real but not the norm, and experienced high-volume surgeons have lower complication rates. Choosing a center that performs a significant number of revision anti-reflux procedures makes a measurable difference in outcomes.
Recovery After Revision
Recovery follows a similar pattern to the original surgery but may take slightly longer because of the added complexity. Most patients start clear fluids on the first day after surgery and are discharged from the hospital once they can tolerate them comfortably, often within one to three days.
From there, you’ll progress through a staged diet over about three weeks: liquids first, then pureed or soft foods, then gradually back to a normal diet. Eating too quickly or advancing to solid food before the new wrap has settled can cause pain and swallowing problems, so patience during this phase matters. Full physical activity is generally allowed as soon as you leave the hospital, though most people ease back into strenuous exercise over a few weeks as soreness resolves.
Long-Term Outlook
A large single-center study following 194 patients after laparoscopic revision fundoplication found that at an average of 4.7 years, 77% were completely symptom-free. About 14% still needed daily acid-suppressing medication to manage residual symptoms, and 9% eventually required a second revision. Those numbers are less favorable than first-time fundoplication results, where success rates typically exceed 90%, but they still represent a meaningful improvement for most patients living with a failed wrap.
The likelihood of a good outcome improves when the cause of failure is clearly identified before surgery, the revision is performed by a surgeon experienced in reoperative foregut work, and the patient follows the post-operative diet progression carefully. Some patients with multiple failed fundoplications or severely damaged tissue may be offered alternative procedures, including partial gastrectomy combined with intestinal rerouting, though this is reserved for the most complex cases.