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Pyloromyotomy is surgery to cut and loosen a narrowed pylorus caused by pyloric stenosis.


Before your baby's surgery:

  • Informed consent is a legal document that explains the tests, treatments, or procedures that your child may need. Informed consent means you understand what will be done and can make decisions about what you want. You give your permission when you sign the consent form. You can have someone sign this form for you if you are not able to sign it. You have the right to understand your child's medical care in words you know. Before you sign the consent form, understand the risks and benefits of what will be done to your child. Make sure all of your questions are answered.
  • An IV is a small tube placed in your child's vein that is used to give him medicine or liquids.
  • General anesthesia will keep your baby asleep and free from pain during surgery. Anesthesia may be given through your baby's IV. He may instead breathe it in through a mask or a tube placed down his throat. The tube may cause your baby to have a sore throat when he wakes up.

During your baby's surgery:

Your baby's surgeon will make small incisions in your baby's abdomen. He may go through your baby's belly button. He will cut the thick, tight pylorus muscle and spread it apart so food can pass through. The incision will be closed with medical tape.

After your baby's surgery:

Your baby will be taken to a room to rest until he is fully awake. He will be monitored closely for any problems. He will then be able to go home or be taken to his hospital room.

  • Healthcare providers will need to keep track of what your baby drinks and urinates. They will weigh your baby's diapers. Do not throw away diapers without letting someone know.
  • Healthcare providers will weigh your baby each day. This will help them know if your baby loses or gains weight after surgery.
  • Your baby will slowly start to eat during the first 24 hours after surgery. Healthcare providers may start with sugar water or water with electrolytes in it. If your baby tolerates that, they may start him on diluted breast milk or formula. If your baby tolerates that, he may be able to start feeding normally.
  • A nasogastric (NG) tube may still be in place after surgery for the first 2 or 3 feedings. This is so healthcare providers can see if there is formula or breast milk left in the stomach after your baby eats. Once your baby is feeding well, the NG tube will be removed.
  • Your baby may vomit a few times for the first 2 or 3 days after surgery. This may be caused by swelling around the surgery area and should get better.
  • Medicines:
    • Antibiotics help prevent an infection caused by bacteria.
    • Pain medicine may be given. Do not let your baby's pain get severe before you ask for more medicine.


Your baby may bleed more than expected or get an infection. Your baby could develop pneumonia. His stomach, intestines, or other nearby organs may be damaged. The pylorus muscle could grow thick again and block your baby's intestines. Your baby may need surgery again.


You have the right to help plan your child's care. Learn about your child's health condition and how it may be treated. Discuss treatment options with your child's healthcare providers to decide what care you want for your child.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Learn more about Pyloromyotomy (Inpatient Care)

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