Polycystic kidney disease (PKD, also known as polycystic kidney syndrome) is a progressive, ciliopathic, genetic disorder of the kidneys. It occurs in humans and other organisms. PKD is characterized by the presence of multiple cysts(hence, "polycystic") in both kidneys. The disease can also damage the liver, pancreas, and rarely, the heart and brain. The two major forms of polycystic kidney disease are distinguished by their patterns of inheritance.
Tuesday, September 23, 2008
POLYCYSTIC KIDNEY DISEASE
Polycystic kidney disease (PKD, also known as polycystic kidney syndrome) is a progressive, ciliopathic, genetic disorder of the kidneys. It occurs in humans and other organisms. PKD is characterized by the presence of multiple cysts(hence, "polycystic") in both kidneys. The disease can also damage the liver, pancreas, and rarely, the heart and brain. The two major forms of polycystic kidney disease are distinguished by their patterns of inheritance.
POST OPERATION LAST ABOUT THREE HOURS
The donor kidney will be placed in the lower abdomen and its blood vessels connected to arteries and veins in the recipient's body. When this is complete, blood will be allowed to flow through the kidney again, so the ischemia time is minimized. In most cases, the kidney will soon start producing urine. Since urine is sterile, this has no effect on the operation. The final step is connecting the ureter from the donor kidney to the bladder.
Depending on its quality, the new kidney usually begins functioning immediately. Living donor kidneys normally require 3-5 days to reach normal functioning levels, while cadaveric donations stretch that interval to 7-15 days. Hospital stay is typically for four to seven days. If complications arise, additional medicines may be administered to help the kidney produce urine.
Medicines are used to suppress the immune system from rejecting the donor kidney. These medicines must be taken for the rest of the patient's life. The most common medication regimen today is : tacrolimus, mycophenolate, and prednisone. Some patients may instead take cyclosporine, rapamycin, or azathioprine. Cyclosporine, considered a breakthrough immunosuppressive when first discovered in the 1980's, ironically causes nephrotoxicity and can result in iatrogenic damage to the newly transplanted kidney. Blood levels must be monitored closely and if the patient seems to have a declining renal function, a biopsy may be necessary to determine if this is due to rejection or cyclosporine intoxication.
Acute rejection occurs in 10% to 25% of people after transplant during the first sixty days. Rejection does not necessarily mean loss of the organ, but may require additional treatment
Depending on its quality, the new kidney usually begins functioning immediately. Living donor kidneys normally require 3-5 days to reach normal functioning levels, while cadaveric donations stretch that interval to 7-15 days. Hospital stay is typically for four to seven days. If complications arise, additional medicines may be administered to help the kidney produce urine.
Medicines are used to suppress the immune system from rejecting the donor kidney. These medicines must be taken for the rest of the patient's life. The most common medication regimen today is : tacrolimus, mycophenolate, and prednisone. Some patients may instead take cyclosporine, rapamycin, or azathioprine. Cyclosporine, considered a breakthrough immunosuppressive when first discovered in the 1980's, ironically causes nephrotoxicity and can result in iatrogenic damage to the newly transplanted kidney. Blood levels must be monitored closely and if the patient seems to have a declining renal function, a biopsy may be necessary to determine if this is due to rejection or cyclosporine intoxication.
Acute rejection occurs in 10% to 25% of people after transplant during the first sixty days. Rejection does not necessarily mean loss of the organ, but may require additional treatment
KIDNEY TRANSPLANT REQUIREMENTS
Kidney transplant requirements vary from program to program and country to country. Many programs place limits on age (e.g. the person must be less than 69 years old when put on the waiting list) and require that one must be in good health (aside from the kidney disease).
Significant cardiovascular disease, incurable terminal infectious diseases and cancer often are transplant exclusion criteria. In addition, candidates are typically screened to determine if they will be compliant with their medications, which is essential for survival of the transplant. People with mental illness and/or significant on-going substance abuse issues may be excluded.
HIV was at one point considered to be a complete contraindication to transplantation. There was fear that immunosuppressing someone with a depleted immune system would result in the progression of the disease. However, current research does not bear out this fear; in fact there are findings that immunosuppressive drugs and antiretrovirals may work synergistically to help both HIV viral loads/CD4 cell counts and prevent active rejection.
Significant cardiovascular disease, incurable terminal infectious diseases and cancer often are transplant exclusion criteria. In addition, candidates are typically screened to determine if they will be compliant with their medications, which is essential for survival of the transplant. People with mental illness and/or significant on-going substance abuse issues may be excluded.
HIV was at one point considered to be a complete contraindication to transplantation. There was fear that immunosuppressing someone with a depleted immune system would result in the progression of the disease. However, current research does not bear out this fear; in fact there are findings that immunosuppressive drugs and antiretrovirals may work synergistically to help both HIV viral loads/CD4 cell counts and prevent active rejection.
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