Suggest Treatment For Severe Dizziness, Heart Palpitations And Heavy Feeling

my husband went in to emerge on sat night with severe dizziness and heart racing, feeling heavy. They said there was signs of heart damage, but not sure when it happened. He has been getting the dizziness and fast paced heart beat since. Is there something else that could be causing this as he feels it doesn t warrant going back to emerge since all they did was blood test ecg and monitor him.