Nurse Sarah on Instagram: "Cardiac conduction system explained in less than a minute... Here is how the heart's electrical conduction system works and translates to the ECG waveform. Need help with ECG interpretation or nursing school? Don't forget we have TONS of FREE videos, quizzes, and more on our website and YT (see link in our bio)! #heart #ecg #ekg #nursing #cardiacconduction #heartconduction #nurse #rn #nursesarah #nursingnotes #nursingschool #nursingstudent"