2 sentences

1. 她因为心力衰竭而死。

   tā yīn​wèi xīn​lì​shuāi​jié ér sǐ.

   She died of heart failure.

   Source: OpenSubtitles

2. 她患有心力衰竭。

   tā huàn​yǒu xīn​lì​shuāi​jié.

   She suffered from heart failure.

   Source: OpenSubtitles