Cardiology jokes

Fat person: "Hey, what's up?"

Friend: "Your blood pressure!"

Me: Knock knock.

My Grandma: Who’s there?

Me: Interrupting cow.

My Grandma: Interrupting c-

[Dies from heart attack]

What is the easiest line to draw in the hospital?

My heartbeat.

There is a thin line between death and life!

You won't live to see it.....

The Cardiogram will!!

Man: What's up?

Me: I'm annoyed.

Man: Why?

Me: I stole my gf's heart.

Man: So why are you annoyed?

Me: Everyone else in the surgery room gave me weird looks.

My grandfather has the heart of a lion... And a lifetime ban from the zoo.

My cousin died last week. He needed a blood transfusion, but we didn't know his blood type. He just kept saying, "B positive, B positive," but it's hard to be positive with him gone.