### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Last summer and fall I had instances when I was working outside in the yard I felt strong pulsations at the base of my neck ( in the back of my neck), accompanied by shortness of breath. I rested, then worked some more, then rested, etc until the shortness of breath subsided (15 minutes?). The one in the fall was a month or so later and was not as strong so I just kept working through it by slowing down the pace of my work.A month ago, after a stress test, the cardiologist did a cath and put two stents in one of my heart arteries( I had one put in ten years ago and apparently it was getting clogged). He said I did not have a heart attack but explain the pulsations at the base of my neck accompanied by shortness of breath.  I hope someone can explain this to me. Maybe I should see a neurologist? Im one who believes in checking things out so problems can be caught and treated early. Looking forward to your answer.

### output:

Thanks for your question on Chat Doctor. I can understand your situation and problem. By your history and description, in my opinion you are having acute left ventricular failure. It is common in cardiac patients. It is due to poor ejection fraction (EF).  Because of this pimping function of heart is reduced. So in rest body is comfortable, so cardiac demand is less. But when body is under physical stress, cardiac demand increases, and this can not be meet by failing left ventricle. So heart rate is increased. Your neck pulsations are mostly due to this. Failing heart causes fluid retention. And fluid accumulate in lungs and can cause Pulmonary edema. This gives breathlessness on exertion. So this is not heart attack, this is acute left ventricular failure which is causing you neck palpitations and breathlessness.