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Heart Failure, An Issue of Cardiology Clinics, E-Book

Heart Failure, An Issue of Cardiology Clinics, E-Book

Howard J Eisen

(2014)

Additional Information

Book Details

Abstract

Over 5.7 million people in America carry a diagnosis of heart failure, the incidence of which approaches 1 in 100 people over the age of 65. The cost to society is estimated at $29 billion annually and over 1.1 million hospital admissions. For hospitalized heart failure patients, the 30-day readmission rate approaches 25%. As our population ages these numbers are expected to grow.  This issue of Cardiology Clinics helps practitioners to manage patients at all ACC/AHA stages of heart failure and addresses key issues that include sudden cardiac death, arrhythmias, acute decompensated heart failure, and heart failure with preserved ejection fraction.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Heart Failure\r i
Copyright\r ii
Contributors iii
Contents vii
Cardiology Clinics\r xi
Preface xiii
Epidemiology of Heart Failure and Scope of the Problem 1
Key points 1
Introduction 1
Disease description 1
Risk factors 2
Incidence in the United States and worldwide 2
Prevalence of HF in the United States and worldwide 3
Mortality of HF in the United States and worldwide 4
Clinical correlation 4
The Complex of Multiple-Comorbidity 4
Diagnostic criteria 5
Intervention and treatment 5
Summary 6
References 6
Pathophysiology and Etiology of Heart Failure 9
Key points 9
Introduction 9
Common pathophysiologic mechanisms in heart failure 9
Structural Heart Disease and Mechanical Stress: Pressure/Volume Overload 9
Neurohormonal Dysregulation 11
Ischemic Injury: Replacement Fibrosis and Hibernating Myocardium 11
Ultrastructural Abnormalities: Hypertrophy, Fibrosis, and Apoptosis 12
Abnormal Intracellular Calcium Handling 13
Genetic Mutations 13
Heart failure by etiology 14
Ischemic Cardiomyopathy 14
Idiopathic Dilated Cardiomyopathy 15
Hypertensive Heart Disease 15
Valvular Cardiomyopathy 15
Familial Cardiomyopathy 15
Inflammatory Cardiomyopathy 16
Infiltrative Cardiomyopathy 16
Toxic Cardiomyopathy 16
Summary 16
References 16
The Renin-Angiotensin-Aldosterone System and Heart Failure \r 21
Key points 21
Introduction 21
RAAS physiology 21
Systemic Actions of Angiotensin II 22
Cardiac Actions of Angiotensin II and Aldosterone 22
RAAS blockade with ACE inhibitors 23
ACE Inhibitors and Cardiac Remodeling 23
ACE Inhibitors and CV Outcomes in Chronic HF 23
ACE Inhibitors and the Prevention of HF 24
RAAS blockade with angiotensin-receptor blockers 24
ARBs and CV Outcomes in Chronic HF 25
CV Outcomes of Combination Therapy with ACE Inhibitors and ARBs 27
RAAS blockade with aldosterone antagonists 27
Aldosterone Antagonists in CV Outcomes Trials 27
RAAS blockade with a direct renin inhibitor 28
RAAS blockade in HF with preserved EF 28
Summary 29
References 29
The Sympathetic Nervous System and Heart Failure 33
Key points 33
Introduction 33
The autonomic nervous system and the heart 33
Anatomy 34
Physiology 34
Receptors 34
Reflex mechanism of sympathetic hyperactivity in heart failure 34
Afferent Pathways 34
Obstructive sleep apnea 35
Myocardial ischemia and infarction 36
Reflex from skeletal muscle 36
Renal failure 36
Efferent Pathways 36
Central mechanism of sympathetic hyperactivity in heart failure 36
Coupling of Renin-Angiotensin System and Reactive Oxidative Stress in Brain 36
Brain Inflammatory Mediators 36
Effect of sympathetic hyperactivity on heart failure 37
NE Spillover 37
Cardiac Remodeling 37
Receptor Level Changes 37
Impact of β-Adrenergic Receptor Polymorphism 38
Role of parasympathetic dysfunction in heart failure 38
Translation into Heart Failure: Diagnostic Implications 38
Muscle sympathetic nerve activity 38
Nuclear imaging 38
Other measurements 39
The sympathetic nervous system in heart failure: therapeutic implications 39
β-Blockers 39
α-Blockers 39
Centrally-Acting α2-Blockers 41
Renin-Angiotensin-Aldosterone Modulators 41
Digoxin 41
Exercise 41
Novel therapies and future perspectives 41
New Centrally Acting Medications 41
Parasympathetic stimulation 42
Renal sympathetic denervation 42
Combined SNS inhibition and stimulation 42
Future perspectives 42
Special categories in heart failure 42
Diastolic Heart Failure 42
Left Ventricular Assist Devices 42
Right Heart Failure 43
References 43
Evaluation of Patients with Heart Failure 47
Key points 47
Introduction 47
Definition of heart failure 47
Evaluation of patients with heart failure 48
History and Physical Examination 49
History 49
Physical examination 50
Evaluation of Causes and Complications 51
Laboratories 51
Routine laboratory testing 51
Supplemental laboratory assessments 52
Biomarkers 52
BNP 52
Cardiac troponin 53
Noninvasive assessment 53
Echocardiogram 53
Chest radiograph 53
Additional imaging techniques 53
Cardiac magnetic resonance 53
Nuclear imaging 54
Cardiac CT 54
Invasive assessment 54
Endomyocardial biopsy 54
Pulmonary artery catheter evaluation 55
Left heart catheterization 55
Prognostication 55
Scores 55
Functional testing 55
Biomarkers 57
Emerging Biomarkers and Novel Diagnostic Methods 57
Biomarkers of renal injury 57
Biomarkers of myocardial fibrosis 57
Noninvasive impedance cardiography 57
Summary 58
References 58
Management of ACCF/AHA Stage A and B Patients 63
Key points 63
Introduction 63
Stage A HF 64
CAD 64
Hypertension 64
Diabetes 64
Dyslipidemia 65
Metabolic syndrome, obesity, and physical inactivity 65
Sleep apnea 65
Renal disease 65
Smoking 65
Alcohol 65
Cardiotoxins 65
Right ventricular pacing 66
Tachycardia-induced cardiomyopathy 66
HIV 66
Endocrine disorders 66
Diagnostic modalities 66
Stage B HF 67
Management goals 67
Pharmacologic treatment 67
β-Blockers 67
ACE Inhibitors and ARBs 67
CCBs, Digoxin, and Aldosterone Antagonists 68
Nonpharmacological treatment 68
Summary 68
References 69
Management of ACCF/AHA Stage C Heart Failure 73
Key points 73
Stage C heart failure 73
Education and exercise 73
Sodium restriction 74
Obesity and obstructive sleep apnea 74
Pharmacologic therapy 75
Angiotensin-converting enzyme inhibitors 75
Angiotensin receptor blockers 76
Aldosterone antagonists 77
β-adrenergic blockade 79
Diuretics 81
Oral vasodilators 82
Digoxin 83
HF with preserved ejection fraction 84
Device therapy 85
Implantable Cardioverter-Defibrillator 85
Primary prevention 85
Secondary prevention 85
Cardiac Resynchronization Therapy 86
Surgical interventions 87
Coronary Artery Bypass Graft Surgery 87
Mitral Valve Repair 88
Ventricular Reconstruction 88
Summary 88
References 88
Management of the ACC/AHA Stage D Patient 95
Key points 95
Introduction 95
Evaluation for heart transplantation 96
Indications 96
Contraindications 96
Physiology of the transplanted heart 96
Lack of Innervation to the Transplantation Heart 96
Response to Medications 98
Immunosuppression 98
Induction Therapy 98
Purpose 98
Regimens 99
Maintenance Therapy 99
Steroid therapy 99
Mechanism of action 99
Management of the ACC/AHA Stage D Patient 113
Key points 113
Introduction 113
Indications for MCS 114
Beyond New York Heart Association class: INTERMACS profiles 116
Key trials in MCS 116
Patient perspective: life with an MCS device 120
What could possibly go wrong? Modes of failure of MCS devices 122
Future trends 122
Summary 123
References 123
Arrhythmias and Heart Failure 125
Key points 125
Atrial fibrillation 125
Prevalence 125
Association Between Heart Failure and Atrial Fibrillation 125
Atrial Fibrillation Precipitating Heart Failure 126
Pathophysiology 126
Heart Failure Precipitating Atrial Fibrillation 127
Therapeutic Considerations 127
Rate or rhythm control 127
Ventricular-rate control 127
Rhythm restoration or control 127
Atrial Fibrillation and Pacemaker Therapy 128
Ventricular arrhythmias 128
Medical Therapy for Ventricular Arrhythmias in Heart Failure 129
References 130
Sudden Cardiac Death in Heart Failure 135
Key points 135
Introduction 135
Pathophysiology 136
Epidemiology 137
Risk stratification 137
Left Ventricular Ejection Fraction 137
Ventricular Ectopy 138
Microvolt T-wave Alternans 138
Heart Rate Variability and Baroreflex Sensitivity 138
Signal-averaged ECG 138
Electrophysiology Studies 138
Cardiac Magnetic Resonance Imaging 139
I-123 Metaiodobenzylguanidine 139
Prevention and treatment of sudden death 139
Pharmacologic Therapies 139
Coronary Revascularization 139
ICDs 139
Cardiac Resynchronization Therapy 140
Wearable Cardioverter-Defibrillators 141
Summary 141
References 141
Managing Acute Decompensated Heart Failure 145
Key points 145
Introduction: nature of the problem 145
Management goals 146
Pharmacologic strategies 146
Hemodynamic strategies 147
Self-management strategies 148
Evaluation and adjustment 148
Summary 149
References 149
Heart Failure with Preserved Ejection Fraction 151
Key points 151
Introduction 151
Epidemiology 152
Pathophysiology 152
Differential diagnosis 153
Outcomes 154
Treatment 154
Controlling Comorbid Conditions 154
Pharmacologic Treatment: Review of the Evidence 154
Other ongoing investigations 157
Summary 158
References 158
Adjunctive Therapy and Management of the Transition of Care in Patients with Heart Failure 163
Key points 163
Introduction: nature of the problem 163
Management goals 164
Pharmacologic strategies 165
Diuretics 165
Angiotensin-converting Enzyme Inhibitors/Angiotensin Receptor Blockers 166
β-Blockers 166
Aldosterone Antagonists 166
Digoxin 167
Hydralazine and Nitrates 167
Other Pharmacologic Agents 167
Nonpharmacologic strategies 168
Diet in Heart Failure 168
Cardiac Rehabilitation and Exercise 168
Evaluation for Implantable Cardioverter-Defibrillator 168
Cardiac Resynchronization Therapy 169
Smoking, Alcohol, and Substance Abuse Cessation 169
Self-management Strategies 170
Evaluation, adjustment, recurrence 170
Adjustments 171
Recurrence 171
Palliative care in heart failure 172
Summary 172
References 172
Index 175