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Biomedical subjects

Kevin J O'Connor

Publications and source records attributed to Kevin J O'Connor.

6 recordsLinked to original sources

A statewide public health approach to improving organ donation: the Massachusetts Organ Donation Initiative.

Despite the growing disparity between organ supply and demand in the United States, few initiatives have attempted to close the gap through systematic population-based public health endeavors. We examined the evolution, implementation, and outcomes of the Massachusetts Organ Donation Initiative, a statewide effort that included a unique partnership among organ procurement organizations, major teaching hospitals, and the state's department of public health. Lessons from this initiative have contributed to growing national efforts for increasing organ supply and have provided insights for addressing this continuing public health challenge.

Cooperative Behavior↗

Vital role of medical examiners and coroners in organ transplantation.

Many people die owing to the shortage of donor organs. Medical examiners and coroners (MEs/Cs) play a vital role in making organs available for potential recipients. Medical examiners'/coroners' case data were collected using a structured confirmatory-recorded methodology for calendar years 2000-01 and were linked and analyzed with donor and transplant data from the United Network for Organ Sharing, predicting the nature and extent of the loss of donor organs. Nearly seven percent of ME/C cases were denied recovery during 2000-01. Because 353 and likely, 411 potential organ donors (PODs) were denied, as many as 1400 persons on transplant waiting lists did not receive organs because of ME/C denials. Problematically for pediatric patients awaiting transplantation, nearly half of all ME/C denials occurred in pediatric patients. Eighteen percent of PODs aged five or less and 44.2% of child abuse PODs were denied recovery by the ME/C. There were no (zero) denials in three of the five largest U.S. cities and in four states. Since 1994, two states have enacted legislation restricting the circumstances of ME/C denials, resulting in an 83% decrease in ME/C denials. Release of all organs from ME/C cases is needed urgently to protect the lives of those persons awaiting transplantation. Medical examiners and coroners deserve recognition for their efforts in advocating methods and/or regulation/legislation designed to achieve 100% release of life-saving organs for transplantation.

Cadaver↗

Constrained formation of object representations.

Viewers were presented with a rapid sequence of very brief stimulus pairs, each of which consisted of a pictured object followed by a related or unrelated word. The form of relatedness between the picture and word was manipulated across experiments (identical concept, associated concept, ink color of the picture). Recognition memory for the pictures was affected not only by whether or not paired items were conceptually identical or semantically related, but also by whether or not the words named an irrelevant feature, ink color. These results show that sequential items are integrated on the basis of similarity at whatever level is available, so that the stability of the memory representation of one or both items is increased. We propose that a common mechanism may underlie integration, priming, and selective attention.

Association Learning↗

Increasing the supply of kidneys for transplantation.

Kidney transplantation confers a survival advantage for patients with end-stage renal disease (ESRD) when compared to dialysis and improves the quality of life in a cost-effective manner. Currently there are more than 60,000 patients on the U.S. waiting list for kidney transplantation. In 2004, 16,879 kidney transplants, including 880 simultaneous kidney and pancreas transplants, were performed in this country. Recent strategies for increasing the supply of kidneys hold promise, such as systematic programs designed to improve consent rates for deceased donor organ procurement. Efforts to increase donation after cardiac death (DCD) have been highly successful and now account for more than 5% of all deceased organ donors. Transplantation of kidneys from DCD donors yields 1-year graft and patient survival rates equivalent to kidneys from brain-dead donors. Expanded criteria donor (ECD) kidneys from donors > or = 60 years of age (or donors age 50-59 years with certain comorbidities) confer a survival benefit for end-stage renal disease (ESRD) patients compared to remaining on dialysis on the waiting list. The number of live donor kidney transplants, both from biologically related and unrelated donors, is increasing. Paired live donor kidney transplants provide yet another transplantation opportunity for ESRD patients with willing but incompatible (by ABO or direct antibody) living donors.

Cadaver↗