Hiatal hernia surgery is a procedure that pulls the stomach back down through the diaphragm and tightens the opening where the esophagus passes through, often with a wrap of stomach tissue around the lower esophagus to prevent acid reflux. Most hiatal hernias don’t need surgery, but when medications stop controlling severe reflux, or when a large portion of the stomach pushes up into the chest cavity, surgical repair becomes the standard treatment. The procedure is almost always done with minimally invasive techniques, and most people return to work within one to two weeks.
When Surgery Becomes Necessary
The vast majority of hiatal hernias are Type I, or “sliding” hernias, where the junction between the stomach and esophagus slides upward through the diaphragm. These rarely need surgery. Acid-reducing medications handle most cases effectively, and surgery is only considered when those medications fail to control severe heartburn, when chronic acid exposure has narrowed the esophagus, or when stomach acid repeatedly enters the lungs and causes pneumonia.
The calculus changes for Type II through IV hernias, called paraesophageal hernias, where part of the stomach (or in extreme cases, nearly the entire stomach) rolls up beside the esophagus into the chest. If you have symptoms from a paraesophageal hernia, there is unanimous agreement among experts that elective surgical repair is the right move. For asymptomatic paraesophageal hernias, the decision is less clear: the annual risk of developing an emergency is about 2%, while the mortality rate for elective repair is roughly 1.5%. Many surgeons take a watchful waiting approach in those cases.
Tests You’ll Have Before Surgery
Before scheduling a repair, your surgical team needs a detailed picture of how your esophagus functions. An upper endoscopy lets the surgeon see the hernia directly and check for damage like inflammation or Barrett’s esophagus. Esophageal manometry, a test that measures the strength and coordination of your swallowing muscles, is considered essential because it rules out conditions like achalasia that would make the surgery inappropriate. A pH study, which tracks acid levels in your esophagus over 24 to 48 hours, provides a baseline measurement of how much reflux is actually occurring. These tests are typically done together in one visit, since manometry helps position the pH monitoring probe.
How the Procedure Works
Nearly all hiatal hernia repairs are now performed laparoscopically or with robotic assistance, through several small incisions in the abdomen rather than one large opening. The surgeon works through these ports to complete a sequence of steps that address both the hernia itself and the reflux it causes.
First, if a hernia sac has formed, it’s removed. The surgeon then pulls the stomach back into the abdomen and ensures enough of the esophagus sits below the diaphragm to prevent the hernia from recurring. Next comes closing the widened opening in the diaphragm, called the hiatus, by stitching the muscular pillars (crura) back together with heavy permanent sutures. Finally, the surgeon performs an antireflux procedure, most commonly a Nissen fundoplication: the upper portion of the stomach is wrapped completely around the lower esophagus like a collar, then stitched in place. This wrap creates a one-way valve that lets food pass down but prevents stomach acid from flowing back up. The wrap is then anchored to the diaphragm in three places to keep it from migrating.
A study of over 8,000 patients found that robotic repair produced fewer complications than standard laparoscopic repair, with lower rates of post-surgical bowel slowdown and fewer ICU visits. At one year, robotic patients also had lower symptom recurrence, roughly half the rate of the laparoscopic group. Both approaches remain effective options, and which one your surgeon uses often depends on their training and available equipment.
The Mesh Question
Some surgeons reinforce the hiatal closure with a piece of surgical mesh, hoping to reduce recurrence. A randomized clinical trial followed patients for 13 years and found no meaningful difference: the hernia came back in 38% of mesh patients and 31% of suture-only patients. Given that mesh can cause its own complications, many surgeons now favor sutures alone for standard repairs.
Recovery Timeline
Full recovery takes four to six weeks, but the trajectory is faster than most people expect. Walking starts on day one after surgery. Many patients feel well enough to return to work within one to two weeks, particularly if their job isn’t physically demanding. Your surgeon will set specific lifting restrictions, but the general rule is to avoid anything that causes pain and gradually increase activity back to your normal level.
The dietary progression is where most of the adjustment happens. For the first two weeks, you’ll eat only pureed foods, essentially anything you could pour or that has a smooth, mashed-potato consistency. Meat needs to be blended to a paste. After those two weeks, you advance to soft foods: think well-cooked vegetables, flaky white fish, minced chicken, and slippery noodles. Avoid rice during this stage. The key at every phase is small bites, thorough chewing, and eating slowly. You stay on soft foods until everything goes down easily, which varies from person to person.
Side Effects and Complications
The most common side effect is difficulty swallowing, which is usually temporary as the area heals and swelling subsides. In one study, only 4% of patients still had any dysphagia at six months, and even that case resolved with continued medication.
Gas-bloat syndrome is the side effect that catches people off guard. Because the stomach wrap is designed to prevent anything from flowing back up, it can also make it difficult to belch or release trapped air. The stomach fills with gas, causing bloating, pressure, and discomfort. Reported rates vary wildly, from 1% to as high as 85%, depending on how strictly the symptom is defined. Several factors contribute: the altered anatomy at the esophageal junction, possible nerve irritation during surgery, and pre-existing motility problems. For most people, it improves over the first few months as the body adapts to the new anatomy. Avoiding carbonated drinks, eating slowly, and reducing gas-producing foods can help during that adjustment period.
Long-Term Effectiveness
Surgery is highly effective at eliminating reflux symptoms. In short-term follow-up studies, only about 4% of patients still report heartburn after laparoscopic repair, a dramatic improvement for people whose symptoms weren’t controlled by medication. The antireflux wrap works well as a mechanical barrier, and most patients are able to stop taking acid-reducing medications entirely.
The main long-term concern is recurrence. That 13-year trial found hernia recurrence rates of roughly 31% to 38% on imaging, though many of those recurrences are small and don’t cause symptoms. A recurrent hernia that produces bothersome reflux or other problems can be re-evaluated for a revision surgery, though repeat operations are more complex than the initial repair.