Dad's Angioplasty

Hi everyone, my dad has his angioplasty and stenting in a few days and to be honest, I’m pretty nervous. I’m only 20 and I’ve never had someone so close to me undergo a procedure even though I know it’s minimally invasive. I’ve been to the hospital plenty of times but I’ve never faced a situation like this before and I feel unsure about what to expect. If anyone has been through something similar could you please share your experience and help me understand how to handle this.