First...
These devices are on the market... to assist in your healthcare ...
Pay attention... like your life depends on it.
They were/are NEVER intended in lieu of regularly seeing a physician... So the FIRST THING you want to do...
Get yourself & Grand Mother down for a ROUTINE check up...
Expect the doctor to listen to your HEARTS...
A good doctor will also listen to your lungs...
and at the carotid arteries...
Echo and electro cardio grams are non intrusive and
quite excellent diagnostic tools... a good couple of
Blood panel (basic & metabolic)... cholesterol...
Oral health... and you will be good to monitor you
vitals at home...
Doing it in a vacuum can actually be dangerous
especially if you have a minor UNDIAGNOSED heart
condition...
EQUALS GAME OVER.
Then
Take your dandy gadgets back down to WALGREENS...
and swap them out for ones that will work correctly... under your CIRCUMSTANCES.
Carnac the Magnificent