I'm imagining he's had a bypass, especially with him being in a coma and talks of 2-3hr operation. I'd imagine he is still intubated post procedure in a medically induced coma, unless his heart attack co-incided with an arrest in which case being in an induced coma can be a way to reduce damage from hypoxia as you cool and slowly warm the patient. All hard to tell on sparse info, s*** news regardless.
Edit: Just seen confirmed bypass: must have been fairly major blockages / blocked left main stem unless angioplasty is not gold standard in France. If so the coma can be normal recovery post bypass with people sometimes going 24-48h before waking up.
With regards to angioplasty: it's only possible dependent on location of and number of blockages. Sometimes angioplasty can't be performed and bypass is the preferred option. Bypass is much more invasive with a larger recovery.