Neil S

almost 6 years ago

This is interesting. I never really thought about it much as when it was introduced, they just flew into the electrophysiology of it. It sounds like Einthoven was inspired by Descartes to use P and Q and it went from there. They started with a different naming system when Waller did the first EKGs back in the 1880s. If the link doesn’t work, message me and I’ll find it again for you. The article is by J Willis Hurst, MD from 1998 in the AHA Journal. https://www.ahajournals.org/doi/full/10.1161/01.cir.98.18.1937?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmed

Good question but 😐 IDK (F)

In geometry most commonly use this 4 (P Q R S)Ex, Square PQRS, Triangle PQR etc.. SO. because of this