Eli5: what is a heart bypass?

Question

I’m not super familiar with medical stuff. But we found out today my dad needs a bypass and I’m anxious about it, they tried to explain it and I’ve tried looking it up but I genuinely don’t understand what it entails or if he’ll be okay

Thanks

Edit: I don’t have the energy to reply to everyone but ty all for your explanations!! I’m still anxious but feeling a lot less worried knowing what it actually is

In: 9

Answer 1

A bypass surgery is where they create an additional blood vessel to the heart to improve blood flow since the original one has degraded due to high cholesterol or other reasons.

Best of luck to your dad.