Cardiac arrest survivors of musculoskeletal injury can survive several years after a heart attack even five years after a heart attack according to a new study by researchers at Tianjin University in China. A heart attack in nearly 10 of these survivors remained undetected and untreated according to the study published in the Journal of the American College of Cardiology.

Most survivors had acute injured conditions like compression of aorta with pinpoint right- or left-sided extensor carotid ultrasound being the main cause said Matthew J. Taylor Ph. D. the lead author of the study. However we found that 55 percent survived five years following a heart attack.

All of the patients were involved in controversies leading to the use of computer-aided reconstruction (CARD) technology to collect a unique reference card to track the exact location and age of injuries and luck of survivors. These data are constantly updated annually to include the latest survival study registration status: 609 patients including 399 who had undergone surgery for heart attacks or brain puncture as well as 261 who survived a heart attack or brain bleed.

The majority of the 212 surviving patients who participated in CART were over the age of 45 years. The majority of those who completed two-year periods without vital signs were between 30 and 40 years.

In overall survival within five years of hospital discharge the majority of the 176 survivors who walked two hours or more up to three miles per hour per day were alive. Within three years of hospital discharge 67 of 24 survivors no longer had detectable heart function with 95 still alive after five years. Most people who survived in this time period completed nearly two decades without symptoms the study said.

The question has always been how long survivors live after their conditions are diagnosed and how long they can survive to five years said Lee Fang M. D. a postdoctoral fellow in the Taylor lab and the studys lead author. These findings confirm past studies that suggest survival is likely to be quite limited and we should consider these observations to serve as a cautionary note in the future and lead to improved research around heart attack.

There is no blood test to determine if a previous heart attack was detected. Just because people meet the criteria does not mean their survival is good they said. The new findings may simply be a reflection of success in early surgery not a sign of genetic abnormalities.

We dont completely understand an individuals tolerance to these chronic conditions that may be genetic in origin said Evan S. Shaffer Ph. D. executive director ProCytokine a nonprofit in High Springs Colorado that supports procytokine.org which is based in Long Beach.