He suffered a massive heart attack.

他的心脏病严重发作了。

《牛津词典》

He died six weeks later of a massive heart attack.

他6周后死于一次严重的心脏病发作。

《柯林斯英汉双解大词典》

Her mother suffered a massive heart attack.

她母亲患了严重的心脏病。

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"Having a massive heart attack at the age of 40, you know something is not right, " he says.

BBC: Premier League health project shows promising results

Indeed, immediately after his death, rumors began circulating that Atkins had, in fact, died of a massive heart attack.

FORBES: Atkins Nutritionals Goes Belly-Up

With his death from a massive heart attack today, Ken Lay cheated justice.

FORBES: Lay Cheats Justice