ENCYCLOPEDIA OF HEART DISEASES ENCYCLOPEDIA OF H E A R T DISEASES M. GABRIEL KHAN, MD, FRCP[C], FRCP[LONDON], FACP, FACC Cardiologist The Ottawa Hospital Ottawa, Canada Associate Professor of Medicine University of Ottawa Ottawa, Canada AMSTERDAM (cid:1) BOSTON (cid:1) HEIDELBERG (cid:1) LONDON NEW YORK (cid:1) OXFORD (cid:1) PARIS (cid:1) SAN DIEGO SAN FRANCISCO (cid:1) SINGAPORE (cid:1) SYDNEY (cid:1) TOKYO Academic Press is an imprint of Elsevier Elsevier AcademicPress 30CorporateDrive,Suite400, Burlington,MA01803,USA 525BStreet,Suite1900, SanDiego, California 92101-4495,USA 84Theobald’s Road,LondonWC1X 8RR,UK Thisbookisprintedon acid-freepaper. Copyright (cid:1)2006, Elsevier Inc. Allrights reserved. Nopart ofthis publicationmaybereproduced ortransmittedin anyform orbyany means,electronic ormechanical, includingphotocopy,recording, oranyinformation storage andretrievalsystem, withoutpermission inwriting from the publisher. Permissionsmaybesought directlyfrom Elsevier’s Science &Technology Rights Departmentin Oxford, UK:phone: (þ44)1865843830,fax:(þ44) 1865853333, E-mail:[email protected]. Youmayalso completeyour requeston-line viathe Elsevier homepage(http://elsevier.com), byselecting ‘‘CustomerSupport’’ andthen‘‘Obtaining Permissions.’’ Library ofCongress Cataloging-in-Publication Data Application submitted BritishLibrary Cataloguingin Publication Data Acatalogue recordfor thisbookis availablefrom the British Library ISBN13: 978-0-12-406061-6 ISBN10: 0-12-406061-7 Forall information onallElsevier Academic Presspublications visit ourWeb siteatwww.books.elsevier.com Printedin the UnitedStates ofAmerica 05 06 07 08 09 10 9 8 7 6 5 4 3 2 1 To my wife Brigid who made this work possible And to our children Susan Christine Yasmin Jacqueline Stephen Natasha CONTENTS About the Author xv Anemia and the Heart 25 Preface xvii I. Anemia and Heart Function 25 Acknowledgments xix II. Clinical Studies 25 Bibliography 26 Aging and the Heart 1 I. The Size of the Problem 1 Aneurysm 27 II. Effects of Aging on the Heart and I. Abdominal Aortic Aneurysm 27 Vascular System 1 II. Thoracic Aortic Aneurysm 30 III. Cardiovascular Therapy in the Elderly 2 III. Aortic Dissection 31 IV. Research Implications 3 IV. Berry Aneurysm 32 Bibliography 3 Bibliography 32 Alcohol and the Heart 5 I. Alcohol and Coronary Heart Disease 5 Angina 35 II. Alcohol and Hypertension 6 I. Size of the Problem 35 III. Alcohol and Heart Failure 6 II. Pathophysiology 36 IV. Alcohol and Cardiomyopathy 6 III. Diagnosis 39 V. Alcohol and Abnormal Heart Rhythms IV. Disease Processes Causing and Abnormal Electrocardiograms 7 Angina 40 VI. Alcohol and Coagulation Factors and Stroke 7 V. Stable and Unstable Angina 41 VII. Type of Alcohol Consumption 7 VI. Nondrug Treatment 42 VII. Perspective 8 VII. Drug Treatment 45 Bibliography 8 VIII. Hypertension 53 Altitude and Pulmonary Edema 9 IX. Angina Patients with Heart Failure 53 I. Signs and Symptoms 9 X. Silent Ischemia 53 II. Mechanisms 9 XI. Variant Angina III. Management 10 (Prinzmetal’s Angina) 53 IV. Clinical Study 10 XII. Unstable Angina/Acute V. Perspective and Research Implications 10 Coronary Syndrome 54 Bibliography 11 Bibliography 55 Anatomy of the Heart and Circulation 13 Angioplasty/Coronary Balloon 57 I. Anatomic Features 13 I. Procedure 57 II. Circulation of Blood 21 II. Indications 58 Bibliography 21 III. Contraindications and Limitations 58 Anderson-Fabry Disease 23 IV. Outcome of Angioplasty 59 Bibliography 23 Bibliography 60 viii CONTENTS Angiotensin-Converting Enzyme Artificial Heart 105 Inhibitors/Angiotensin Receptor Blockers 61 I. Electric Total Artificial Heart 105 I. ACE Inhibitors 61 II. Left Ventricular Assist Device 107 II. Angiotensin II Receptor Blockers 65 III. Is There a Logical Role for Ventricular Bibliography 67 Assist Devices? 108 IV. New Frontiers 109 Antihistamines 69 Bibliography 109 I. Histamine Antagonists 69 Aspirin for Heart Disease 111 Bibliography 69 I. Historical Review 111 Antioxidants 71 II. Mechanism of Action 112 I. Statins 71 III. Recognized Indications for Aspirin and Dose 113 II. Vitamin E 72 IV. Perspective 114 III. Vitamin C 73 Bibliography 114 IV. Beta-Carotene 73 Atherosclerosis/Atheroma 117 V. Mediterranean Diet 74 VI. Dietary Plant-Derived Flavonoids 74 I. Introduction and Historical Background 117 VII. French Red Wine 74 II. Pathology 119 VIII. Probucol 75 III. Pathogenesis 121 Bibliography 75 IV. Vulnerable Atheromatous Plaques 127 V. Clinical Studies 127 Antiphospholipid Antibody Syndrome 77 VI. Perspective and Research Implications 128 I. Diagnosis 77 Bibliography 130 II. Management 77 Athletes and Sudden Cardiac Death 131 Bibliography 77 I. Cardiac Causes of Sudden Death in Young Antiplatelet Agents 79 Athletes 132 I. Mechanism of Action 79 II. Sudden Death Not Associated with II. Indications 80 Cardiac Disease 135 III. Available Antiplatelet Agents 80 III. Athlete’s Heart Versus Hypertrophic Bibliography 83 Cardiomyopathy 136 Bibliography 137 Arginine and the Heart 85 Atrial Fibrillation 139 I. Clinical Study 85 Bibliography 85 I. Epidemiology 140 II. Diagnosis 140 Arrhythmias/Palpitations 87 III. Causes and Research Implications 141 I. Origin of the Heartbeat 87 IV. Pathophysiology 143 II. Palpitations, Premature Beats, and V. Classification and Management 143 Irregular Beats 88 VI. Anticoagulants 148 III. Tachycardia 89 VII. Electronic Pacing 149 IV. Antiarrhythmic Agents 95 Bibliography 149 V. Automatic Implantable Cardioverter Defibrillator 100 Atrial Septal Defect 151 VI. Conclusion 100 I. Clinical Study 151 Bibliography 100 Bibliography 152 Arteriosclerosis 101 B-Type Natriuretic Peptide 153 I. Diseases Causing Arteriosclerosis 101 I. Clinical Studies 153 II. Atherosclerosis 102 II. Perspective 154 Bibliography 103 Bibliography 155 CONTENTS ix Beriberi Heart Disease 157 IV. Next Generation Agents 196 Bibliography 197 I. Clinical Manifestations 157 Bibliography 157 Carcinoid Heart Disease 199 Beta-Blockers 159 I. Heart Damage 199 II. Diagnosis 199 I. Beta-Receptors 160 III. Treatment 200 II. Mechanism of Action 160 IV. Clinical Study 200 III. Salutary Effects 160 Bibliography 200 IV. Indications 161 V. Clinical Trials 163 Cardiogenic Shock 201 VI. Adverse Effects and Cautions 164 I. Causes 201 VII. Classification 164 II. Pathophysiology 201 VIII. Subtle Differences and Research Implications 165 III. Management 202 IX. Individual Beta-Blockers 166 IV. Perspective and Research Implications 202 Bibliography 167 Bibliography 202 Blood Clots 169 Cardiomyopathy 203 I. Causes of Blood Clots 169 I. Hypertrophic Cardiomyopathy 204 II. Nondrug Treatment 170 II. Sudden Death 207 III. Drug Treatment 170 III. Dilated Cardiomyopathy 209 Bibliography 174 IV. Restrictive Cardiomyopathy 211 V. Specific Heart Muscle Disease 211 Blood Pressure 175 Bibliography 212 I. Historical Review 175 II. Systolic and Diastolic Blood Pressure 178 Cardiopulmonary Resuscitation (CPR) 215 III. Classification 178 I. Causes of Loss of Consciousness 215 IV. Normal Fluctuations in Blood Pressure 178 II. Cardiac Arrest Rhythms 216 V. Finger Cuff Method of Penaz 180 III. Cardiopulmonary Resuscitation 216 VI. Technique and Pitfalls of Measurement 180 IV. Defibrillation 219 VII. Effects of High Blood Pressure 180 V. Drugs for Cardiac Arrest 220 Bibliography 180 VI. Perspectives and Research Implications 221 VII. Outcomes of Out-of-Hospital Cardiac Arrest 221 Brugada Syndrome 183 VIII. The Heimlich Maneuver 222 I. Clinical Features 183 Bibliography 222 II. Perspective 184 Bibliography 184 Chagas Disease 223 I. Epidemiology 223 Bundle Branch Block 185 II. Symptoms and Signs 223 I. Right Bundle Branch Block 185 III. Diagnostic Investigations 225 II. Left Bundle Branch Block 187 IV. Management 225 Bibliography 187 Bibliography 225 Caffeine and the Heart 189 Chelation and Heart Disease 227 I. Biochemistry 189 I. Clinical Study 227 II. Effects 190 II. Perspective 227 Bibliography 191 Bibliography 228 Abstract 228 Calcium Antagonists 193 Chemotherapy-Induced Heart Disease 229 I. Mechanism of Action 193 II. Available Calcium Antagonists 194 I. Chemotherapeutic Agents 229 III. Therapeutic Benefits 196 II. Cardiac Damage from Anthracyclines 229