Guide to Canine and Feline Electrocardiography

List of Contributors vii Preface ix Acknowledgements xi About the Companion Website xiii 1 Anatomy of the Conduction System 1 Pedro Oliveira 2 Cardiac Electrophysiology 9 Antonia Mavropoulou 3 Cardiac Vectors and the Genesis of the Electrocardiogram 21 Pedro Oliveira 4 Electrocardiography 35 Ruth Willis 5 Sinus Rhythms 57 Ruth Willis 6 Pathogenesis and Classification of Arrhythmias 67 Antonia Mavropoulou 7 Bradyarrhythmias and Conduction Disturbances 79 Ruth Willis 8 Atrial Rhythms 109 Pedro Oliveira 9 Atrial Fibrillation 127 Ruth Willis 10 Junctional Rhythms 147 Pedro Oliveira 11 Ventricular Rhythms 169 Antonia Mavropoulou 12 Clinical Approach to Arrhythmias and Intermittent Collapse 189 Ruth Willis 13 Diagnostic Approach to Narrow‐QRS Complex Tachycardia 201 Antonia Mavropoulou 14 Diagnostic Approach to Wide‐QRS Complex Tachycardia 211 Antonia Mavropoulou 15 Ambulatory Electrocardiographic Recordings 219 Ruth Willis 16 Heart Rate Variability 231 Domingo Casamian‐Sorrosal 17 Anti‐arrhythmic Drugs 241 Joel Freitas da Silva 18 Pacemaker Therapy 255 Simon Swift 19 Electrophysiology Studies and Catheter Ablation 271 Pedro Oliveira and Martin Lowe 20 Arrhythmias in Canine Cardiomyopathies and Valvular Heart Disease 285 Gerhard Wess and Marin Torti 21 Arrhythmias in Feline Cardiomyopathies 301 Erin L. Anderson 22 Inherited Ventricular Arrhythmias in German Shepherd Dogs 315 Thibault Ribas and Romain Pariaut 23 Systemic Disease and Arrhythmias, Including Selected Non‐cardiogenic Causes of Collapse 319 Jon Wray 24 Cardiac Arrhythmias and Anaesthesia 337 Frances Downing and Louise Clark Appendix 1 Normal ECG Measurements for Cats and Dogs 349 Appendix 2 Arrhythmias – A Brief Review 351 Appendix 3 Mean Electrical Axis 381 Appendix 4 Anti‐Arrhythmic Drugs and Dosages 387 Appendix 5 Sample ECG Reports 389 Self-assessment 393 Index 425