The old man's heart is blocked by 50%, and his eyes turn black after walking for a few meters.
Old people are like this. Why not go to a regular hospital for treatment? 50% can be cured. Do you need a bracket? In short, we must discuss with the doctors in the hospital, even if there are professional doctors here, we dare not draw conclusions! We need to make a comprehensive analysis in the hospital and make the best decision. I wish the elderly good health and an early recovery!