ECG from basics to essentials - Step by step: Part 1

(BQ) Part 1 of the document ECG from basics to essentials - Step by step presents the following contents: Anatomy and basic physiology, ECG recording and ECG leads, the normal ECG and the frontal plane QRS axis, the components of the ECG waves and intervals, P waves and atrial abnormalities, chamber enlargement and hypertrophy, intraventricular conduction defects,... and other contents.