The following video crash course presents the basics of electric circuits (concept of a battery, resistance, switches, voltmeters). It really helps to understand the ECG formation.
This instructional video talks about the cardiac cell membrane and how the movement of sodium and potassium produces the electrical changes in voltage known as the action potential.
The following video training describes the heart muscle cells and the difference between ion or electrolytes concentrations in the cells against the serum.
The following video crash course shows the different kinds of ECG systems, and patient's attachment to the monitor. In details are featured the limb leads.
The following video crash course demonstrates an irregular rhythm and is designed for people who knows the basics but are interested in reading advanced tracings.
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