Right, no defibrillator
As for PVCs vs
normal beats, isn't that read by looking at the height and shape of the graph? Maybe for his purpose the point would be to see the normal beats on the graph and look for gaps longer than normal between normal beats.
Like, if you get bu-bump, bu-bump, bu-bump, bu-bump, bibbitybo, bu-bump, bu-bump -- for him it's the distance of that gap that matters, not the details of whether the gap is filled by biggityep or bibbityoo or whatever.