(Pyloric Stenosis Repair; Pyloromyotomy)
Pronounced: py-LOR-oh-plah-stee, py-LOR-ik stuh-NOH-sis, py-LOR-oh-MY-ah-ta-me
by Daus Mahnke, MD
Pyloroplasty is a surgery to correct a narrowing of the pyloric sphincter. The pylorus is a muscular area that forms a channel between the stomach and intestine. Normally, food passes easily from the stomach into the intestine through this sphincter.
Reasons for Procedure
The pylorus sphincter can become narrowed, usually from an enlargement of the muscle. The condition is called pyloric stenosis. It can cause severe symptoms such as nausea, vomiting, and dehydration. Narrowing of the pylorus can be the result of scarring from ulcers, a hiatal hernia, inflammatory diseases, or a mass, such as cancer.
Pyloric stenosis may be a serious condition. Pyloroplasty is often necessary to treat it.
Problems from the procedure are rare, but all procedures have some risk. Your doctor will review potential problems, like:
Before your procedure, talk to your doctor about ways to manage factors that may increase your risk of complications such as:
What to Expect
Prior to Procedure
Your surgery will be done using general anesthesia. You will be asleep.
Description of Procedure
An incision will be made in the upper part of your abdomen. The pylorus will be exposed. A cut will be made in the muscle of the pylorus. The sphincter will be sewn back together in a way that will make the opening wider. The abdominal muscles will be sewn back together. The skin will be closed with stitches or staples.
If your pyloroplasty is done because you have an ulcer, other procedures may be done at the same time.
Immediately After Procedure
After the surgery, you will be monitored in a recovery area for about 1-2 hours.
How Long Will It Take?
About 1-2 hours
How Much Will It Hurt?
Anesthesia will prevent pain during surgery. Pain and discomfort after the procedure can be managed with medications.
Average Hospital Stay
The usual length of stay is 1-3 days. Your doctor may choose to keep you longer if complications arise.
At the Hospital
You will gradually return to a normal diet. Before you go home, you will be taught how to care for your surgical incision.
During your stay, the hospital staff will take steps to reduce your chance of infection such as:
There are also steps you can take to reduce your chance of infection such as:
Call Your Doctor
Call your doctor if any of these occur:
If you think you have an emergency, call for emergency medical services right away.
American College of Gastroenterology
Family Doctor—American Academy of Family Physicians
Canadian Association of Gastroenterology
Dimitrios M, Geis WP, Ginalis EM, Gorcey SA, Stratoulias C. Laparoscopic pyloroplasty in idiopathic hypertrophic pyloric stenosis in an adult. JSLS. 2000;4(2):173–175.
Pyloroplasty. Encyclopedia of Surgery website. Available at:
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Accessed January 10, 2018.
6/2/2011 DynaMed Plus Systematic Literature Surveillance http://www.dynamed... : Mills E, Eyawo O, Lockhart I, Kelly S, Wu P, Ebbert JO. Smoking cessation reduces postoperative complications: a systematic review and meta-analysis. Am J Med. 2011;124(2):144-154.
Last reviewed November 2018 by EBSCO Medical Review Board Daus Mahnke, MD
Last Updated: 12/20/2014
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