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Atrial Fibrillation, An Issue of Cardiology Clinics, E-Book

Atrial Fibrillation, An Issue of Cardiology Clinics, E-Book

Hakan Oral

(2014)

Additional Information

Book Details

Abstract

Atrial fibrillation is the most common cardiac arrhythmia. This issue of Cardiology Clinics examines following facets of atrial fibrillation: epidemiology and societal impact, risk factors and genetics, mechanisms, diagnosis and follow-up, rate versus rhythm control, antiarrhythmic drug therapy, catheter ablation, surgery, antithrombotic and anticoagulant therapy, left atrial appendage exclusion, management of patients with heart failure and structural heart disease, and novel treatment paradigms.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Atrial Fibrillation i
Copyright\r ii
Contributors iii
Contents vii
Cardiology Clinics\r x
Preface\r xi
Risk Factors and Genetics of Atrial Fibrillation 485
Key points 485
Introduction 485
Aging 485
Hypertension 486
Heart failure and coronary artery disease 486
Pericardial fat and obesity 487
Sleep apnea 487
Atrial dilatation and stretch 488
Other risk factors 488
Genetic risk factors and AF 488
Genetic variants associated with AF 488
Rare genetic variants and AF 488
Ion Channel Genes 488
Non–Ion Channel Genes 490
Common genetic variants and AF 490
References 491
Mechanisms of Atrial Fibrillation 495
Key points 495
Introduction 495
Frequency-Dependent Breakdown of Wave Propagation 496
Relationship Between the Dynamic Patterns of Rotors and DFs 498
Transition from paroxysmal to PeAF is reflected by DF changes 498
The Rate of DF Increase Predicts the Onset of PeAF 499
Electrophysiologic Remodeling in Ionic Currents and DF Increase 500
Translation to patients: the high DF sites and maintenance of AF 501
DF Mapping in Patients to Guide AF Ablation 502
Summary 502
References 504
Diagnostic Evaluation and Follow-Up of Patients with Atrial Fibrillation 507
Key points 507
Introduction 507
Diagnostic evaluation 507
Clinical History 507
Symptoms 507
Quality of life 508
Past medical history 510
Medications 511
Physical examination 511
Diagnostics 511
Follow-up 512
Anticoagulation 512
Antiarrhythmic Therapy 512
Radiofrequency Ablation 515
References 515
Rate Versus Rhythm Control for Atrial Fibrillation 521
Key points 521
Drug therapy for maintenance of sinus rhythm 521
Rate control in AF 523
Rate versus rhythm control 523
Catheter ablation versus AAD’s 525
Catheter ablation as first-line treatment 526
Catheter ablation of AF 529
Summary 529
References 529
Antiarrhythmic Drug Therapy for Atrial Fibrillation 533
Key points 533
Rhythm versus rate control 534
Rhythm control 534
Pharmacologic Cardioversion 534
Decision to Maintain Sinus Rhythm 535
Available AAD Choices 535
Quinidine 535
Disopyramide 535
Flecainide and propafenone 535
Sotalol 536
Dofetilide 536
Amiodarone 537
Dronedarone 537
Ibutilide 538
Common Rules in AAD Selection 538
Outpatient versus inpatient start of antiarrhythmic therapy 539
Upstream therapy for AF 539
Angiotensin-Converting Enzyme Inhibitors and Angiotensin Receptor Blockers 542
3-Hydroxy-3-Methylglutaryl–Coenzyme A Reductase Inhibitors/Statins 542
Antiinflammatory Agents 543
Aldosterone Antagonists 543
Future pharmacologic therapy 543
Vernakalant 544
Ranolazine 544
Miscellaneous 544
Summary 544
References 544
Catheter Ablation of Atrial Fibrillation 551
Key points 551
Introduction 551
Preoperative planning 551
Patient Selection 551
Preprocedure Testing 551
Anticoagulation 552
Ablation strategy 552
AF Mechanisms 552
PVI 552
Additional Strategies 553
Cryoballoon Catheter 554
Postprocedure care and follow-up 554
Ablation outcomes 555
Procedural Success 555
Stroke Benefit 556
Mortality Benefit 558
Complications 558
Summary 558
References 559
Surgery for Atrial Fibrillation 563
Key points 563
Introduction 563
Indications for surgical ablation of atrial fibrillation 564
Surgical technique: Cox-Maze IV procedure 564
Preoperative Planning 564
Positioning 564
Operative Technique 564
Sternotomy approach 564
Pulmonary Vein Isolation 566
Right Atrial Lesion Set 566
Left Atrial Lesion Set 567
Right mini-thoracotomy approach 567
Perioperative and postoperative management 568
Surgical results: CMPIV 568
Summary 569
References 569
Atrioventricular Junction Ablation for Atrial Fibrillation 573
Key points 573
Introduction 573
Indications for AVJ ablation 574
Refractory AF/Atrial Flutter and Rapid Ventricular Rates 574
AF and Cardiac Resynchronization Therapy 574
AVJ ablation procedure 574
Complications 575
Hemodynamics of AVJ ablation 576
Tachycardia-induced cardiomyopathy 576
Device selection after AVJ ablation 577
Long-term outcomes after AVJ ablation 579
Alternatives 579
New technology 580
Summary 581
References 581
Antithrombotic and Anticoagulant Therapy for Atrial Fibrillation 585
Key points 585
Introduction 585
Assessment of stroke and bleeding risk 586
Anticoagulation therapy 587
Vitamin K Antagonists (eg, Warfarin) 587
Non-VKA Oral Anticoagulants 590
Antithrombotic therapy 593
Antiplatelet agents in AF patients undergoing percutaneous coronary intervention/stenting 594
Prevention of nonpharmacologic stroke and thromboembolism 595
Summary 596
References 596
Left Atrial Appendage Exclusion for Atrial Fibrillation 601
Key points 601
Introduction 601
LAA structure and function 602
Morphology 602
Regional Anatomy 603
Morphologic Variation 603
Function 604
Stroke mechanisms in atrial fibrillation 604
Systemic Factors, Clinical Risk Prediction, and Ventricular-Vascular Interactions 604
LAA Dysfunction and Myopathy 605
LAA Morphology and Microstructure Complexity 606
LAA closure for cardioembolic risk reduction 606
Surgical Approaches 606
Minimally Invasive and Hybrid Surgical Approaches 607
Percutaneous LAA Closure 607
Transseptal approach 607
Percutaneous Left Atrial Appendage Transcatheter Occlusion 607
ACP 607
WATCHMAN 609
WaveCrest 611
Other Transeptal Devices 611
Epicardial approach 612
Hybrid approach 613
Prevention and management of complications 614
Unanswered questions 615
Summary 618
References 618
Postoperative Atrial Fibrillation 627
Key points 627
Introduction 627
Mechanism 627
Epidemiology 628
Prognosis 629
Management goals 629
Pharmacologic strategies 629
β-Blockers 629
Antiarrhythmic Drugs 630
Amiodarone 630
Sotalol 630
Ibutilide and dofetilide 630
Class I AADs 630
Calcium Channel Blockers and Digoxin 630
Magnesium 630
Miscellaneous Agents 630
Nonpharmacologic strategies 630
Prophylactic Atrial Pacing 630
Electrical Cardioversion 631
Posterior Pericardiotomy 631
Anterior Fat Pad Preservation 631
Anticoagulation 631
Recurrence 632
Summary 632
References 632
Novel Upstream Approaches to Prevent Atrial Fibrillation Perpetuation 637
Key points 637
The epidemic of atrial fibrillation 637
A new animal model of persistent AF 638
Sustained high-frequency atrial excitation results in oxidative stress 639
Role of inflammation 641
The RAAS and atrial fibrosis 642
Is gal-3 a new player in AF remodeling? 644
Outlook on preventative af therapy 646
Acknowledgments 646
References 646
Index 651