In "Heart Rate Part 1" I asked about the efficacy of manually determining heart rate (as applies to AFers).
I was amazed and heartened by the great response. Thanks!
Now, proceeding from manual method to simple machines...
For an AFer, what’s the efficacy of using a:
- Cuff: I suspect no better than the manual approach. I don’t exactly know how they work—but know the cuff is a reliable way to find out blood pressure. Blood pressure can be very important to AF patients. I have extremely low blood pressure. (Low enough to earn me helicopter trip #2.) Almost all medications relating to AF (specifically to ensure heart rate doesn't go too high, too often) decrease blood pressure—so you can see my quandary.
- Pulse Oximeter: I understand that well oxygenated blood is important, but I still don’t know how this device relates to, or measures, heart rate.
PLEASE DON’T DISCUSS MORE COMPLICATED MACHINES LIKE THE FITBIT, KARDIA, and the ER-room cardiac monitor. These are reserved for "Heart Rate Part 3". But if any other devices fall into the “simple machine” category, please pipe in.
HOWEVER, AS FAR AS I’M CONCERNED, BOTH CUFF and PULSE OXIMETER ARE ESSENTIALLY USELESS BECAUSE THEY PROVIDE ONLY SINGLE DIGIT HEART RATE ANSWERS (more specifically--they do not display TRENDS) and I can’t see how a single digit response (e.g., heart rate = 120 bpm) relates in any useful way to a person with a heart in AFib.