“Yes, the first wave is called the P wave. And this is when…” — Stuff You Should Know at 30:33
“Yes, the first wave is called the P wave. And this is when you're looking at an EKG and the lines just go up and down really quick. It's not just chaotic like it looks to me. One of those is called the P wave. This is when the electrical activity spreads over the atria and they contract. The QRS complex is where the…”
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