Kidney transplantation is the surgical placement of a healthy kidney into the body of a patient with kidney failure, to take over the function of the non-functioning kidney. The transplantation process consists of identifying a suitable donor, planning the surgery, and post-operative follow-up.
What is a Kidney Transplant?
A kidney transplant (renal transplantation) is the surgical replacement of a kidney that has permanently lost its function with a healthy kidney. It is one of the most frequently performed organ transplants. It is usually performed on individuals with end-stage renal failure. Kidneys perform vital functions such as cleaning the blood, eliminating harmful substances through urine, and maintaining the body's water and salt balance. When these functions cannot be performed, serious health problems arise in the body.
When kidney failure progresses, patients often undergo dialysis. Dialysis cleans the blood with the help of a machine; however, this process is performed at specific intervals and does not fully replace all the functions of the kidney. After the transplanted kidney is connected to the body's circulatory system, it begins to filter the blood and produce urine.
This helps to remove waste products (such as urea and creatinine) that accumulate in the blood and eliminate excess fluid from the body. As a result, many symptoms and imbalances caused by kidney failure may tend to improve over time.
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What is Robotic Kidney Transplantation?
Robotic kidney transplantation is a robot-assisted and laparoscopic form of kidney transplantation surgery performed on patients with kidney failure. This means the surgery is still performed by a surgeon; however, the surgeon performs the surgery more precisely and controllably with the help of a robotic system.
In classic (open) kidney transplantation, a larger incision is made in the abdomen. In robotic kidney transplantation, several small holes are made in the abdomen. A camera and special surgical instruments are inserted. The surgeon performs the surgery sitting at a console, controlling these instruments.
Why is a Kidney Transplant Performed?
Kidney transplant is performed when the kidneys are permanently unable to perform their function. The most basic reason is end-stage renal failure. When the kidneys' working capacity drops to a critical level, the body cannot cleanse itself and maintain internal balance. This situation can lead to serious problems affecting many organs, especially the cardiovascular system, over time. The aim of the transplant is to enable the patient to continue living by having the kidney take over these functions again.
Other reasons for kidney transplantation include:
- When the kidneys stop working, waste products such as urea and creatinine accumulate in the blood. This accumulation can cause weakness, loss of appetite, nausea, itching, sleep problems, and a significant decrease in overall health. Kidney transplantation cleanses the body by ensuring the regular filtration of these waste products.
- Dialysis is performed at specific times and regular intervals, which can restrict a person's daily life and may not provide the same comfort for every patient. In suitable patients, transplantation can reduce or completely eliminate the need for dialysis.
- In kidney failure, water retention in the body may increase; symptoms such as swelling in the legs, shortness of breath, and high blood pressure may occur. In addition, the balance of minerals such as potassium, sodium, and phosphorus may be disrupted, and this can create significant risks, including heart rhythm problems. Kidney transplantation can make the body's fluid-mineral balance more stable.
- The kidneys play a direct role in regulating blood pressure. When kidney function is impaired, hypertension becomes common and can be difficult to control. A transplant can contribute to better blood pressure management.
- The kidneys also play a role in the production of certain hormones, such as erythropoietin, which affect blood production. Anemia is common in kidney failure. Furthermore, bone health can be negatively affected due to imbalances in vitamin D, calcium, and phosphorus. A transplant can eliminate these problems by restoring the hormonal effects of the kidney.
Who is a Suitable Candidate for Kidney Transplantation?
Kidney transplantation is generally considered for individuals with end-stage renal failure. This group includes:
- Those with advanced renal failure,
- Patients undergoing dialysis,
- Patients who have not yet started dialysis but whose kidney function has decreased enough to require a transplant (preemptive transplant candidates).
In Which Cases Cannot a Kidney Transplant Be Performed?
Some elderly patients may be candidates for transplantation if medically suitable, while some younger patients may not be suitable due to serious accompanying health problems. The following groups may not be suitable for kidney transplantation:
- Cardiovascular diseases that need to be controlled
- Advanced lung diseases
- Liver diseases
- Cancers
- Serious problems in vascular structure
- Special conditions related to the immune system
How is a Kidney Transplant Performed?
A kidney transplant is a surgical procedure in which a healthy kidney is implanted in patients with advanced kidney failure. The transplanted kidney can be obtained from a living donor or a brain-dead donor. The operation is performed in an operating room by experienced organ transplant teams.
During surgery, the patient's own kidneys are usually not removed. The new kidney is typically placed in the right or left groin area, outside the peritoneum. This is because large blood vessels are located in this area, allowing for safer surgical connections.
The artery and vein of the transplanted kidney are connected to the patient's vascular system. Then, the ureter, the duct leaving the kidney, is connected to the bladder. Once these connections are complete, blood flow to the kidney begins, and in most patients, urine production is observed within a short time.
If a kidney is to be harvested from a living donor, the donor surgery is usually performed using a closed (laparoscopic) method. This technique, performed through smaller incisions, can speed up the donor's recovery process and improve postoperative comfort. The transplant surgery for the recipient, however, is performed using an open surgical technique.
Sometimes, due to blood type or tissue incompatibility, a donor cannot donate a kidney to their own relative. In this case, a method called "cross-transplantation" comes into play. In this system, two or more donor-recipient pairs are matched. If a donor in one pair is not suitable for their relative, they may be suitable for a recipient in another pair. Thus, through reciprocal matching, each recipient can receive a compatible kidney.
Cross-transplantation offers a significant opportunity for patients with a low chance of receiving a transplant. All matches are planned based on detailed compatibility tests and medical evaluations, and the surgeries are performed simultaneously.
What are the signs of kidney transplant rejection?
After a kidney transplant, the immune system may perceive the transplanted kidney as foreign and react against it. This is called organ rejection. Rejection may not always show symptoms. Therefore, regular blood tests and doctor check-ups are vital. However, some possible symptoms include:
- Increased creatinine levels
- Decreased urine output
- Edema
- High blood pressure
- Fever
- Pain and tenderness at the transplant site
- Fatigue, loss of appetite, weakness
What is Blood Group Testing/Blood Group Compatibility for Kidney Transplantation?
One of the most important stages in kidney transplantation is evaluating blood group compatibility. Before transplantation, both the recipient and the donor undergo ABO blood group testing. This is because the recipient and donor's blood groups must match before the transplant.
- Blood type 0: Can only receive a kidney from blood type 0.
- Blood type A: Can receive a kidney from either A or 0.
- Blood type B: Can receive a kidney from either B or 0.
- Blood type AB: Can receive a kidney from A, B, AB, and 0.
What are the Side Effects and Risks of Kidney Transplantation?
Like any surgical procedure, kidney transplantation carries certain risks and side effects for both the recipient (patient) and the donor. These risks can vary depending on the surgical procedure and long-term medication use.
Possible risks for the recipient include:
- Risks associated with surgery, such as bleeding and urinary incontinence
- Organ rejection
- Infection
- Side effects of immunosuppressive drugs include high blood pressure, diabetes, weight gain, osteoporosis, and high cholesterol.
Possible risks for the donor include:
- Risks related to surgery such as bleeding and infection
- Temporary postoperative pain, fatigue, and limited mobility that may be observed in the short term
- Mild decrease in kidney function due to living with only one kidney
What Should Be Done After a Kidney Transplant?
For the transplanted kidney to continue functioning properly and to prevent possible complications, the patient must follow certain rules. These rules are as follows:
- The most critical aspect after a transplant is the regular use of medications that regulate the immune system. These medications help prevent the body from recognizing the new kidney as foreign and rejecting it.
- In the first few months after transplantation, check-ups are more frequent. Creatinine levels, kidney function, and medication levels are monitored through blood tests. While the intervals between check-ups may lengthen over time, they are not completely discontinued.
- The risk of infection may increase due to immunosuppressant drugs. Therefore, hand hygiene should be carefully observed, caution should be exercised in crowded and enclosed environments, and a doctor should be consulted immediately if symptoms such as fever, cough, and burning during urination occur.
- The post-transplant nutrition plan should be adjusted according to the recommendations of the doctor and dietitian. Excessive salt consumption should be avoided. Attention should be paid to balanced and hygienic nutrition. Adequate fluid intake should be ensured.
- High blood pressure and uncontrolled diabetes can damage the transplanted kidney. Therefore, blood pressure should be measured regularly, and blood sugar levels should be monitored if necessary.
- In the first few weeks after surgery, lifting heavy objects, making sudden movements, or activities that strain the abdominal area are not recommended. Caution should be exercised for the duration specified by the doctor, and physical activity should be gradually increased.
Frequently Asked Questions About Kidney Transplantation
How Many Years Can One Live After a Kidney Transplant?
The life expectancy after a kidney transplant can continue for many years in good health, depending on the patient's general health, medication adherence, and regular follow-ups.
What is the Required Age for a Kidney Donor?
Living kidney donors are generally selected from individuals who are 18 years of age or older and medically healthy.
How long does it take for a kidney transplant donor to recover?
Living donors can usually return to their daily lives within 2-4 weeks.
How Many Days Does it Take for a Kidney Transplant Patient to Recover?
Transplant patients are usually discharged within 1-2 weeks, but full recovery can take several weeks.
What Should a Kidney Transplant Recipient Eat?
A kidney transplant recipient should consume hygienic, balanced foods that are low in salt and follow the nutritional plan recommended by their doctor.
What are the Requirements for a Kidney Transplant?
A kidney transplant requires a diagnosis of end-stage renal failure, medical suitability, and completion of necessary blood and tissue compatibility tests.
Is the same blood type important for a kidney transplant?
Yes, blood type compatibility is an important criterion for the safety and success of the transplant.
Is it easy to find a kidney transplant?
The process of finding a kidney depends on donor availability and the waiting list, so it doesn't progress at the same pace for every patient.
How Long Does a Kidney Transplant Take?
A kidney transplant operation typically takes 3-4 hours, but the duration can vary depending on the patient's condition.
What Should Creatinine Levels Be After a Kidney Transplant?
Post-transplant creatinine levels are generally expected to be between 0.5-1.1 mg/dL in women and 0.6-1.3 mg/dL in men, but the ideal level may vary depending on the patient's muscle mass and overall health.
