The Medical Center of the University of Maryland released news on Wednesday (March 9) that patients who received pig heart transplantation surgery at the center died on the 8th, and the cause is not clear.This special transplantation surgery is the first case in the world, and the patient survives for about two months.

According to Xinhua News Agency, the 57 -year -old patient David Bernett received the above operation at the University of Maryland Medical Center in Baltimore in Balt in January 7.According to reports, the pork used during the transplantation surgery passed through genetic modification, and was knocked down by genes that caused human rejection reactions, as well as a specific gene to prevent excessive growth of pig heart tissue in the human body.

The University of Maryland's Medical Center said that Belnett arrived at the center for the first time in October last year. At that time, he could only stay in bed and rely on the body's oxygen oxygen (ECMO) to maintain his life.His condition is not suitable for conventional heart transplant surgery.Before undergoing pork heart transplant surgery, Bente was fully informed of the risk of transplant surgery. This surgery was experimental and has unknown risks and benefits.

The center said that in the few weeks after the operation, the transplantation heart in the Bened body operated well without signs of rejection.He lived with his family and received physical treatment that helped recover physical strength.But Bened's condition began to deteriorate a few days ago.The hospital gave him a queen treatment after determining that Bened had no hope of recovery.Bened can still communicate with his family a few hours before his dying.

Betry's surgical doctor Bartley Griffi said that Bernett has been fighting the illness to the end.This surgery provides valuable information for researchers, which is expected to help doctors better perform transplant surgery and help save patients who have undergone future surgery.