Myocardial infarctio: Chest pain, and possible myocardial infarction @age 50----you should either go to nearest er or be in the hospital. It is immaterial whether you have tachycardia or not. I could be of help if the question is clear.
Answered 2/25/2013
5.7k views
Sinus tachycardia: Sinus tachycardia refers to a faster than normal heart rate. Usually higher than 100 beats/minute. Please see your pcp for further evaluation for chest pain.
Answered 5/29/2016
5.3k views
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