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This is 100% a new trauma and I’m so sorry it happened to you. That’s so scary to witness. My dad has had a lot of medical problems as well so I get that it can really mess a person up. Is there anyone you can talk to about this? My parents were very open about my dad’s health stuff but I recognize not every parent is, so the person you talk to doesn’t have to be a parent.

The good thing is your dad is being proactive and made an appointment with a doctor. The human body can be super resilient and can fight through a lot of things you’d be surprised about. Maybe he can call every so often to see if there’s a cancellation so he can get in early. Also he shouldn’t be afraid of going to the ER when this happens. They have medications to calm him down and can do tests like an EKG to monitor his heart.