EBM 501 Lesson 2: Electrocardiography

Lecture on the electrocardiogram: analysis of the electrical activity of the heart from potentials measured at the surface of the body, the cardiac dipole and the leads of the standard twelve-channel recording with the axis each one views, the waves and intervals of the trace, the analog recorder and the modern preamplifier board with its stepper-motor chart drive, opto-isolated amplifier and diathermy filter that removes 27 MHz interference.