Colostomy- defunctioning loop

Warning

NHS Borders 

"Information given on this site is not meant to take the place of a talk with your doctor or health worker."

What is it?

The bowel is a tube of intestine that runs from the stomach to the back passage. The lower half of the bowel is called the colon. This runs up to the right ribs and loops across the upper part of the belly. Then it passes down the left side to run backwards into the pelvis towards the back passage. This is called the rectum. 


Your lower colon and rectum are diseased. You need to have a bypass operation to keep the waste away from the diseased part.

A loop of colon is brought out onto the skin so that the waste runs into a special bag stuck over the opening. This is a stoma. Often the diseased part can be taken out later, when the bowel has recovered from infection or being overstretched by a blockage. Then the stoma can be closed off. Sometimes it is too risky to take out the diseased part.

Sometimes a colostomy is needed so that x-ray treatment can be given to the lowest parts of the bowel safely.

The operation

Open Surgery

  • you will have a general anaesthetic, and will be asleep for the whole operation
  • a cut 15cm long is made in the skin
  • the colon is freed inside your tummy
  • a loop of colon is brought out and stitched to the skin
  • the opening of the bowel is covered with a special bag
  • the original wound is closed up

You should plan to be in hospital for about a week

Keyhole Surgery

  • you will have a general anaesthetic, and will be asleep for the whole operation
  • 3 cuts are made in the skin in the middle lower part of the abdomen
  • a loop of colon is brought out and stitched to the skin
  • the opening of the bowel is covered with a special bag
  • the original wound is closed up

You should plan to be in hospital 3-5days

Sometimes, if the colon is free enough, a colostomy can be made without the first big wound. This is a bonus for you.

Are there any alternatives?

Leaving things as they are is risky.

A blocked lower colon is a life threatening condition. Drug and x-ray treatment alone will not help.

You must have a bypass operation. It is not safe for you to have the diseased bowel taken out now.

Before - at home

  • stop smoking
  • get your weight down if you are overweight
  • if you know that you have problems with your blood pressure, your heart, or your lungs, ask your family doctor to check these
  • if you are taking any of the following, check the hospital's advice about taking them
    - the pill
    - hormone replacement therapy (HRT)
    - aspirin, or
    - warfarin
  • arrange for a relative or friend to:
    - come with you to hospital
    - take you home, and
    - look after you for the first week after you leave hospital
  • bring all your tablets and medicines with you to hospital


You will meet with the stoma nurse, who will see you in clinic. She will talk to you about your operation and stoma

We usually recommend that five days before your operation you eat a light diet that is low in fibre. For example fish, chicken, rice and mashed potato. Try to avoid vegetables, fruit, cereals and wholemeal bread. You can drink as much as you like.

Before - in Pre-Assessment

  • you will be checked for past illnesses
  • you will have special tests to make sure that you are well prepared and that you can have the operation safely
  • an anaesthetist will also come to see you, to discuss the type of anaesthetic you will be given. He or she will ask you about chest problems, dental treatment and any anaesthetics you have had in the past
  • the anaesthetist will also discuss different types of pain relief with you
  • if you are not sure about anything, please ask a doctor or nurse for more details.

After - in hospital

You will have a drip to give you fluids while you are not allowed to drink. This is a plastic tube attached to either your arm or neck.

The doctors listen to your bowel through your tummy with a stethoscope. When they can hear sounds from your bowel or you have passed wind they start to give you oral fluids. This can take a few days. This is gradually increased until you are able to drink as much as you want.

Once you are drinking normally the drip will come out and you will be able to eat a light diet.

You will have a dressing on your wound and a drainage tube nearby, connected to a plastic bag. This is to drain any blood left from the operation.

The wounds are painful for several days. You will be given painkillers to control this.

You will probably have a fine rubber tube (catheter) going into your bladder to drain the urine. This will be taken out when you are able to get out of bed easily.

The stoma may not work immediately· You will get special advice and help from the Stoma Nurses.

The nurses will help you with everything you need until you are able to do things for yourself.

The wound has a dressing which may show some staining with old blood in the first 24 hours. There may be stitches or clips in the skin. Stitches and clips are removed after about 7 to 10 days. The drain tube is removed after about 2-4 days.

There may be some purple bruising around the wound. This spreads downwards and will fade to a yellow colour after 2 to 3 days. It is not important.

There may be some swelling of the surrounding skin, which also improves in 2 to 3 days.

You can wash as soon as the dressing has been removed. Try to keep the wound area dry until the stitches and clips come out.

You will be given an appointment for a check up at the outpatient department about six to eight weeks after you leave hospital.

The nurses will tell you about things like sick notes and certificates.

The stoma nurse will keep in contact with you at home.

After a general anaesthetic

The anaesthetic drugs will make you sleepy, slow, clumsy and forgetful for about 24 hours. Do not make
important decisions during this time.

After - at home

You are likely to feel very tired and need rests two or three times a day for a month or more. You will gradually improve so that after three months you will be able to return to your usual level of activity.

You can drive as soon as you can make an emergency stop without discomfort in the wound. This should be after about six to eight weeks.

You can restart sexual relations within three to four weeks when the wound is comfortable enough. There may be some damage to the sex nerves after this operation. Some studies suggest that it happens in up to 50% of cases. The surgeon will talk to you about this.

You should be able to return to a light job within eight weeks. Some heavy jobs may not be suitable because of the colostomy.

Recovery after keyhole surgery is quicker than with the open methods but caution still should be paid to heavy lifting and driving

Possible complications

As with any operation under general anaesthetic, there is a very small risk of complications related to your heart and lungs.

The tests that you will have before the operation will make sure that you can have the operation in the safest possible way. This brings the risk for such complications very close to zero.

This is a major operation and complications can happen more often compared with other operations of the bowel. When they do happen, they are quickly recognised and dealt with by the surgical staff. If you think that all is not well, let the doctors or the nurses know.

You may get a chest infection, particularly if you smoke.

To prevent chest infections it is important to:

  • get out of bed as soon as possible
  • get as mobile as possible
  • co-operate with the physiotherapists to clear the air passages
  • do not smoke

There can be some discharge from the drain by the wound, but this stops given time.

Wound infection happens more often in any bowel operation compared to other 'clean' operations such as taking out your gallbladder. The reason is that the bowel has many bugs that can cause an infection. This settles down with antibiotics in a week or two.

Very rarely, during the operation, another part of the bowel, bladder or a blood vessel can be damaged. Another operation may be needed to deal with this.

You may also have:

  • aches and twinges in the wound for up to six months
  • numb patches in the skin around the wound - these get better after two to three months
  • slow healing of the lower wound
  • trouble with the stoma

General advice

Some patients are surprised how slowly they get back their normal stamina. Nearly all patients are back to normal within three months.

Your social lift should not be affected by the operation.

The stoma nurses will keep in touch with you always.

We hope these notes will help you through your operation. They are a general guide, and do not cover everything.

If you have any questions or problems, please ask the doctors or nurses.

Editorial Information

Next review date: 28/02/2026

Author(s): Johnson R.

Approved By: Clinical Governance & Quality

Reviewer name(s): Johnson R.