PETALING JAYA - Tee Hui Yi's condition had been stable during her last medical check-up at the National Heart Institute (IJN).
In a statement released by IJN yesterday, it said the visit had been on Sept 3 at its transplant outpatient clinic.
It said Hui Yi was continued on her routine medication.
"Over the past four years, Miss Tee had developed episodes of rejections of the new heart and was treated accordingly," it added.
"In April 2012, she was found to have developed graft coronary artery disease and she was started on treatment for this condition."
The statement added that according to international data, the most common cause of death for heart transplant recipients between three and five years, were coronary artery disease (14.5 per cent), acute rejection (10.2 per cent) and graft failure (23.1 per cent).
"It is difficult to ascertain the actual cause of death but the most likely possibilities are either cardiac event such as abnormal heart rhythm leading to a loss of blood pressure, graft failure or a spontaneous cerebral-bleed since she was on blood thinners," it added.
The statement said she would be fondly remembered and greatly missed.