ABSTRACT
Preface 4 Abbreviations 4
Section 1: Principles of electrocardiography 5 Explaining the terminology 5
The electrodes 5 The leads 6
The P-QRS-T complex 8 Action potential 8 The cardiac conducting system 8 Components of the P-QRS-T complex 8
The 12 lead ECG 10 Limb leads 10 Chest (precordial) leads 12
Section 2: Comprehensive assessment of the ECG 13 Rate 13
Calculating the heart rate 14 Rhythm 14 The cardiac axis 14
The AP axis 15 Calculating the QRS axis 15
Axis deviation around the vertical axis 18 The P wave 19 The PR interval 19 The Q (q) wave 20 The QRS complex 20 The ST segment 22
ST segment elevation 22 ST segment depression 23
The T wave 24 The U wave 24 The QT interval 25
Section 3: Cases 27
Classification of cases 127 Index 127