cardiac

Another example might be myocarditis, an important cause of sudden cardiac death that is more common in men than women, at least until the age of 50 or menopause.

Defibrillators are used - alongside resuscitation or CPR - to give the best chance of survival during a cardiac arrest.

But in March, the family told BBC News that the star died from cardiac arrest caused by the effects of taking ketamine.

The Briton, who has not yet been named, had already gone into cardiac arrest when police officers arrived at the scene to pull him out of the snow.

Maureen Wyatt, 66, has attended the centre for adults with complex disabilities since 2009 after she suffered a brain injury following a cardiac arrest.