Never let a basic near a cardiology textbook.
I'm pretty sure I understand some of the A&P involved and adding vectors and such. The method I'm using is to look at Lead I and aVF to find the quadrant, then find the isoelectric lead. The axis is perpendicular to that in the quadrant found using I/aVF.
I've gone through a bunch of experiments and they all work out just fine. Some are easy. Iso lead III with +I and +aVF is obviously +30 degrees. Iso lead aVR with -I and +aVF is +120 degrees.
Some I don't understand, probably because I'm approaching it like a computer programmer. I'm trying to list every combination of isoelectric and I, aVF. But what about something like iso II with +I and +aVF? It shouldn't be in that quadrant. should I just assume that would never happen? It seems like there are only two valid quadrants for each isoelectric lead.
Somehow I suspect that is only true in the general or ideal case and that "it depends" and everything is possible.
I'm pretty sure I understand some of the A&P involved and adding vectors and such. The method I'm using is to look at Lead I and aVF to find the quadrant, then find the isoelectric lead. The axis is perpendicular to that in the quadrant found using I/aVF.
I've gone through a bunch of experiments and they all work out just fine. Some are easy. Iso lead III with +I and +aVF is obviously +30 degrees. Iso lead aVR with -I and +aVF is +120 degrees.
Some I don't understand, probably because I'm approaching it like a computer programmer. I'm trying to list every combination of isoelectric and I, aVF. But what about something like iso II with +I and +aVF? It shouldn't be in that quadrant. should I just assume that would never happen? It seems like there are only two valid quadrants for each isoelectric lead.
Somehow I suspect that is only true in the general or ideal case and that "it depends" and everything is possible.
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