Introduction to Clinical Electrophysiology and the ECG 311: Ventricular Hypertrophy | How To Read EKGs Sign in to use this content. LessonsIntroduction.Ion Movement.Basic Electrophysiology.Electrocardiology.Electrocardiogram-Intro.12 Lead ECG.ECG Limb Leads.12 Lead ECG Interpretation.Determining Heart Rate.Rhythm.QRS Axis.Intervals.QRS Complex.ST Segment & T Wave.Bundle Branch Block.✓Ventricular Hypertrophy.Atrial Enlargement.Premature Beats.References.Sign-in to enable progress reports and certificates. Next Lesson Author: Michael Mazzini, MD .< br>> Medically reviewed: Jonathan Keroes, MD