The first symptom I had with my blockages was being short of breath. I still waited until I had chest pain and dizziness (3 months) before going to the ER. (I had never had any cardiac problems before then, just PVD). By the time I got in to see a cardiologist my right coronary artery was 90% blocked and I could have had a heart attack if I had waited any longer. My heart attacks didn't happen until I had stents put in. I still think the stents have caused the heart attacks, becuase there wasn't anymre damage with these attack, but who really knows. But that's another topic. LOL I hope he sees his doc soon. Good luck to him.
Very true Flycaster ! My experience too, they saved my life in the hospital when I had clots.
Take him to the doctor, ASP !
Breathlessness after climbing one flight of stairs is definitely a symptom of heart failure, as Vienna reported, and also it is a strong symptom of a clot. Breathlessness comes on fast with clots, I know from experience. Time for a doctor visit... now.
No you are not over cautious. He should go to the doctor to check this out !!
It can be a start of a heart failure. My best for him ! More power for people over 80 !!