ECG Graph
ECG graph of a normal heartbeat.
ECG graph of a normal heartbeat indicating QRS complex, PR segment, ST segment, PR interval, and QT interval.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"SinusRhythmLabels.svg."
https://commons.wikimedia.org/wiki/File:SinusRhythmLabels.svg
Wikipedia
Public domain.
