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what is the normal cardiac refractory period when having an ...

Sent to Health Experts December 10 2005 at 8:55 AM
   

what is the normal cardiac refractory period when having an echocardiogram and is 50% bad?



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Male , Age: 41

Already Tried:
nothing had echo because he was having some chest pain also has hypertension and takes med for this.

Customer (name blocked for privacy)
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