Estimating the Number of Potential Organ Donors in the United States
Ellen Sheehy, M.P.P.M., M.A.R., Suzanne L. Conrad, M.S., Lori E. Brigham, M.B.A., Richard Luskin, M.P.A., Phyllis Weber, R.N., Mark Eakin, Ph.D., Lawrence Schkade, Ph.D., and Lawrence Hunsicker, M.D.
Background As the need for transplantable organs increases,waiting lists of patients become longer. We studied the sizeand composition of the national pool of brain-dead organ donorsduring a three-year period and, on the basis of these data,considered ways to increase the rate of donation.
Methods We reviewed hospital medical records of deaths occurringin the intensive care unit from 1997 through 1999 in the serviceareas of 36 organ-procurement organizations to identify brain-deadpotential organ donors. We examined data on characteristicsof the potential donors, the processes of referral to organ-procurementorganizations and of requesting donations, and the hospitals.
Results We identified a total of 18,524 brain-dead potentialorgan donors during the study period. The predicted annual numberof brain-dead potential organ donors is between 10,500 and 13,800.The overall consent rate (the number of families agreeing todonate divided by the number of families asked to donate) for1997 through 1999 was 54 percent, and the overall conversionrate (the number of actual donors divided by the number of potentialdonors) was 42 percent. Hospitals with 150 or more beds weremore likely than smaller hospitals to have potential donorsand actual donors (P<0.001); 19 percent of hospitals accountedfor 80 percent of all potential donors. Calculations of thenumber of donors per million persons in the general populationdid not correlate well with the performance of organ-procurementorganizations as measured by the conversion rate.
Conclusions Lack of consent to a request for donation was theprimary cause of the gap between the number of potential donorsand the number of actual donors. Since potential and actualdonors are highly concentrated in larger hospitals, resourcesinvested to improve the process of obtaining consent in largerhospitals should maximize the rate of organ recovery. The performanceof organ-procurement organizations can be assessed objectivelythrough the comparison of the number of actual donors with thenumber of potential donors in the given service area.
Source Information
From the Association of Organ Procurement Organizations, McLean, Va. (E.S.); the Iowa Donor Network (S.L.C.) and the University of Iowa (L.H.), Iowa City; the Washington Regional Transplant Consortium, Falls Church, Va. (L.E.B.); the New England Organ Bank, Newton, Mass. (R.L.); the California Transplant Donor Network, Oakland (P.W.); and the Information Systems Department (M.E.) and the College of Business (L.S.), University of Texas at Arlington, Arlington.
Address reprint requests to Ms. Sheehy at the Association of Organ Procurement Organizations, 1364 Beverly Rd., Suite 100, McLean, VA 22101, or at organdonation{at}aopo.org.
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