That’s a good point. I watched a video by a doctor describing the electrical currents of a heartbeat and he pointed out the 5 ms window. He didn’t mention heart rate.
But would it make a difference? Suppose it is a 5 ms window at 60 beats per minute. At 120 bpm, you’d have a 2.5 ms window, but you’d have that window would occur twice as often, right? So wouldn’t the 5 ms window NOT be a function of heart rate?
I, as not a Doctor, would think the window is still 5ms, but that they are happening closer together.
But, maybe not. In the extreme case, a VERY high heart rate would approach 5 ms itself.
So, yeah I argue with myself that the window shortens, some, maybe not linearly.
The 5ms ‘window’ is a function of - and related to an interruption of - the recovery cycle of the heart after a beat. Not sure whether it appreciably speeds up with faster heartbeats, at least for humans.
The 5ms ‘window’ is a function of - and related to an interruption of - the recovery cycle of the heart after a beat. Not sure whether it appreciably speeds up with faster heartbeats, at least for humans.
I’ll also note that it appears to not be a 100% thing during that 5ms, but rather an asymmetrical bell-curve of possibility.
Here is what is being suggested happened (with my paraphrasing):
The shoulder of the receiver caused a pressure wave on the heart at just the wrong time stimulating a ventricle to beat while only part can do so, and disrupted the hearts polarization recovery between beats.
https://en.wikipedia.org/wiki/Torsades_de_pointes#R-on-T_phenomenon
https://en.wikipedia.org/wiki/Cardioversion