Intestine transplantation
Intestine Transplantation: A Simple Guide
What is an intestine transplant?
An intestine transplant is the surgical replacement of the small intestine for people with severe intestinal failure. It is usually considered when the bowel no longer can absorb enough nutrients, fluids, and minerals, and other treatments can’t fix the problem.
Why would someone need this?
Many people with intestinal failure depend on parenteral nutrition (PN), which delivers nutrients through a vein. While PN helps, long-term PN can cause liver disease and other problems. If the intestine can’t recover and PN isn’t enough, a transplant may be the best option to restore nutrition and quality of life.
A brief history
Transplant attempts began in the mid-20th century. Early results were poor, but advances in immune-suppressing drugs (like ciclosporin in the 1970s and tacrolimus in the 1990s) made successful intestinal transplants possible. Since then, techniques, patient care, and outcomes have steadily improved.
What causes intestinal failure?
- Short bowel syndrome (SBS): loss of much of the small intestine, usually after surgery for disease or injury.
- Chronic diseases that damage bowel function, infections, and metabolic problems.
- SBS is the main reason people get intestinal transplants.
Treatments other than transplant
- Parenteral nutrition (PN): provides nutrients directly into the bloodstream.
- Bowel-lengthening surgeries (STEP and LILT) to help the remaining intestine absorb more nutrients.
- Other surgical and medical therapies to manage symptoms and improve absorption.
PN can be essential but has downsides: it’s time-consuming, expensive, and long-term use can cause liver disease, infections, and other complications. Some patients may eventually reduce PN requirements with bowel-lengthening surgeries or become independent of PN after a transplant.
Who is eligible for an intestinal transplant?
Indications approved by major health programs include:
- Loss of venous access for PN or repeated catheter infections
- Recurrent life-threatening infections from catheters
- Severe fluid or electrolyte problems despite maximal medical therapy
- PN-related liver disease
- Poor growth or quality of life in children on PN
A multidisciplinary team reviews each case to decide if a transplant is the best option.
Types of intestine transplants
- Isolated intestinal graft: only the small intestine is transplanted (no liver failure).
- Intestine-liver graft: both the intestine and liver are transplanted (when the liver is failing).
- Multivisceral graft: includes the intestine plus other organs such as the stomach, pancreas, and sometimes colon. This is used when multiple parts of the digestive system are severely affected.
Donor and matching basics
- Most donors are brain-dead, and matching is planned to maximize success.
- Important matching factors include donor size, age, tissue quality, ABO blood type, and HLA compatibility to reduce rejection.
- Recipients are tested for antibodies (PRA) to predict how likely rejection is.
- Donor intestines must be kept viable outside the body, so timing and logistics are critical.
What about living donors?
In some cases, small sections of the intestine can come from living donors, but most transplants use organs from deceased donors. Researchers are developing methods to harvest limited sections from living donors in certain situations.
What happens during the transplant?
- The donor intestine is removed, preserved, and then attached to the recipient’s blood vessels and digestive tract.
- If a liver or other organs are included, they are transplanted and connected as needed.
- After surgery, patients usually go to the ICU for close monitoring, antibiotics to prevent infection, and careful management of blood flow and bleeding.
Immunosuppression and infection risk
- People who get transplants take lifelong immunosuppressant drugs to prevent the immune system from attacking the new intestine.
- While these drugs lessen rejection, they increase the risk of infections and other side effects.
- The intestine is highly exposed to gut bacteria, so infection risk is a major concern after transplant.
Recovery and outcomes
- Early feeding often starts soon after surgery; PN is usually stopped within weeks to months, and most people no longer need PN within a year.
- One-year graft survival is typically around 70-80% for intestine alone or with the liver, and about 60-70% for multivisceral transplants. Five-year survival ranges widely but can be 50-80% depending on the situation.
- Many patients regain good intestinal function within a year and experience a significant improvement in quality of life. They can often return to normal activities and social life.
Challenges and limitations
- Intestine transplants are less common than other organ transplants because they are complex and require lifelong immunosuppression.
- Donor organs are scarce, and the intestine is very sensitive to time outside the body, so logistics matter a lot.
- Centers performing these transplants are fewer in number, which can affect access to care.
Costs and long-term considerations
- Initial transplant hospitalization can cost roughly 150,000 to 400,000 dollars, with additional costs for follow-up care.
- Over several years, the costs can balance out with PN costs, and overall health and quality of life often improve.
Follow-up and long-term care
- Regular checkups, blood tests, and sometimes endoscopies are needed to monitor for rejection and infections.
- Immunosuppressive therapy is continued for life, with adjustments as needed.
- If rejection or complications arise, treatments are adjusted to protect the graft and the patient.
In summary
Intestine transplantation offers a life-saving option for people with severe intestinal failure when other treatments fail or cause serious problems. While it comes with risks and challenges, advances in surgery, immunosuppression, and post-transplant care have led to meaningful improvements in survival and quality of life for many patients.
This page was last edited on 2 February 2026, at 21:47 (CET).