The death certificate specifies a heart attack, but I know of no heart ailment indicated by those symptoms.
7 seconds sound clip from the Revenge of the Zombies (1943) movie soundboard.
You can hear this line at 00:05:33.120 in the DVD version of the movie.
Quote context
[...]
- I met her only the day before, and she seemed well then.
- I made a determined effort to see her, but Dr. Von Altermann refused me permission.
- So what could I do? He was her attending physician, as well as her husband.
- Refused you? But you've known Lila all her life.
- They suggested something more sinister?
- See to it that your sister is buried immediately.
- Well, let's go then. I'm getting kind of curious to meet this guy.
[...]