His heart condition is not life-threatening.

他的心脏病不会危及生命。

《牛津词典》

Caitlin was born with a life-threatening heart abnormality.

凯特琳先天患有危及生命的心脏病。

《柯林斯英汉双解大词典》

I beg you, from the bottom of my heart, to spare his life.

我诚心诚意地恳求你饶他一命吧。

《牛津词典》

Implantable cardioverter-defibrillators (ICDs) are small battery-powered devices that can deliver a small electric shock to the heart in response to a life-threatening arrhythmia (when the heart starts beating rapidly and inefficiently).

FORBES: Practicing Medicine Against the Evidence: The Case of Implantable Defibrillators

The poor quality of life for heart-failure patients, leading up to death, can also be devastating, he says.

CNN: Study: Blacks suffer heart failure at alarmingly high rates

Wall Street is playing a guessing game after the surprise announcement in Bristol's earnings release yesterday that the U.S. Department of Justice is investigating a deal Bristol and partner Sanofi-Aventis made to preserve the patent life of their top-selling heart pill Plavix.

FORBES: Patent Wars