Hi @ChrisSwain,

I collapsed at work about 12 years ago, maybe like you. Afterwards I got a CABG, (what they call a bypass graft), and a pacemaker.

CABG is a big op. Take it if they offer it. Do exactly what they tell you and you'll be fine. Recovery can take months but you'll feel so much better, really.

A stent is a simpler option to open your artery a bit, well worth taking if offered.
Pacemaker is the simplest. Definitely take it if offered. A little day surgery. You quickly get used to the pacemaker and can ignore it. Battery lasts about 10 years and is easily replaced.
Stop alcohol and cigs, lose weight, take regular exercise, (walking, cycling).

Good luck.

Once upon a time