Im sorry for your loss. Without an autopsy or knowing your family history its impossible to know. He could have had a pulmonary embolism or myocarditis leading to ventricular arrhythmia as a result of his COVID. He could have a genetic syndrome such as Brugada or ARVC or the like. He could have suffered a massive heart attack though thats probably least likely.
OP, Im NAD but my dad passed suddenly and unexpectedly from cardiac arrest 10 months ago as well. He was 66, and had received a clean bill of health from his doctor 2 weeks prior. I just want to say, I am so incredibly sorry for your loss. I know how youre feeling. Grief is such an incredibly tough journey, one that Im still in. The first few months are the hardest, I got into grief counseling immediately and talking about my dad to someone really helped me. Just know that everything youre feeling is ok, and its good to ask questions. My thoughts are with you and your family.sacca:OP, I'm NAD, but as a hospice volunteer, many hospice organizations offer grief counseling services even if the person was not involved in their hospice program. These sorts of orgainzations might be a place to start for grief counseling.Grief is different for everyone, and for many it's like a roller coaster that eventually levels out, but the ride is uncomparable to anyone elses - give yourself time and space especailly now. I lost both my parents a little suddenly (they were in their 80s, but not much warning) and for me, years later, the roller coaster has become much flatter, with more tender memories than anything else.Another person: Adding to the story chain for OP.When I was 27, I had a massive widow maker heart attack in my larger artery (LAD). I was only 27.I didn't know I had a blood clot in my heart, because I didn't know I had a clotting disorder. The LAD was 98% clotted. Sometimes there's more silent things happening in our bodies.I'm really sorry for your loss OP.