By Peter Laird, MD
Renal transplant offers the benefits of increased survival, normalized diet and life style and freedom from the burdens of dialysis. Since the first successful renal transplant in 1954 when Richard and Ronald Herrick, living donor renal transplant is the recognized gold standard renal replacement therapy for patients with ESRD. Many of the early renal donors have enjoyed long, healthy lives after donation. Ronald Herrick is no exception. He lived to the age of 79, dying in 2010 from complications of heart surgery.
Initially, candidates for renal donation underwent stringent physical examination and had to be free of any chronic illness that could lead to renal disease or cardiovascular complications. Today, as the demand for renal donation increases and is popular in the press and television news stories, criteria for renal donation is now much more relaxed. Early studies of the safety of renal donation appear to imply normal or even longer than average survival compared to the general population. The difficulty is that no one has a complete record of all renal donors since they are not followed in most centers past the first year. Some new data is now showing a significant decline in renal function in the first year after living renal donation that gives pause to the rush to increase this source of renal grafts:
Renal Function Declines in Living Kidney Donors
At one year post-nephrectomy, 131 (78%) donors had a 25% or greater increase, 27% had a 50% or greater increase, and 31% had a 0.4 mg/dL or greater increase in plasma creatinine compared with their pre-donation values.
In addition, the researchers found an association between mean arterial pressure (MAP) and a plasma creatinine rise of 25% or greater one year post-nephrectomy. Each 1 mm Hg increment in MAP at the time of donation was associated with a 6% increased risk of having a 25% or greater increase in plasma creatinine.
“There are few data addressing post-nephrectomy kidney function in contemporary living donors,” said Julie Lin, MD, MPH, FASN, senior author of this study. “We were surprised to find that relatively high proportions of donors met established clinical definitions for lower kidney function whereas the general expectation has been for higher levels of recovery at one year. Donors deserve quality information on the expected course of kidney function change after nephrectomy.”
The entire debate over payment for renal vendors is predicated on the belief that living donation renders no harm to the donor. The evidence from the illegal black markets from poor renal donors in Pakistan, India and Iran is far from reassuring with no net financial benefit to these people after loss of ability to work is calculated into the final analysis. Ronald Herrick gave his brother the gift of life and both lived exceptional lives. However, in an open, regulated, legal market for renal donors, many will be motivated by the immediate financial reward without much thought on how it may change their own health and well being. For the 1 out of 3000 that die during renal donation, no amount of compensation accounts for their loss.
The irony of continued calls for payment for renal donation is that we are now finally seeing the true promise of altruistic renal donation where many transplant chains are initiated by an altruistic donor. The power of love for our fellow man is the true message of the Ronald and Richard Herrick story. The power of the love of money by starting a regulated open market tempers the historical relevance of this truly modern medical miracle. The simple truth is that no regulated market will ever meet the demands of our nation that has so dismally failed to prevent obesity, HTN and diabetes that all lead down the path of end stage renal disease. Until these public health epidemics are controlled, the contrivance of a regulated organ market will be little more than a band aide at best, but it may also be the opening of Pandora's box. As in all things, first, do no harm.
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