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The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Epidemiology and management of new-onset atrial fibrillation
Khalid Abusaada1, Sushant B Sharma, Radhika Jaladi
1Department of Medicine, Drexel University School of Medicine, Philadelphia, Pennsylvania, USA.
Insights
Atrial fibrillation (AF) is a growing cardiac condition affecting millions. Early identification of causes and prompt management are crucial for preventing stroke and improving patient outcomes.
Area of Science:
- Cardiology
- Electrophysiology
- Public Health
Background:
- Atrial fibrillation (AF) is a prevalent cardiac arrhythmia with increasing incidence in the US, projected to affect over 5.6 million by 2050.
- AF is defined as a supraventricular tachyarrhythmia causing uncoordinated atrial activation and impaired mechanical function, identifiable on ECG by irregular fibrillatory waves replacing P waves.
- The underlying cause of AF remains unknown, but associated factors include noncardiac (e.g., thyrotoxicosis, alcohol) and cardiac (e.g., left atrial enlargement, heart failure) conditions.
Purpose of the Study:
- To detail the acute management strategies for atrial fibrillation.
- To discuss the epidemiology of atrial fibrillation.
- To outline the principles of AF treatment, including hemodynamic stabilization, identification of reversible causes, heart rate control, and stroke prevention.
Main Methods:
- Review of current medical literature and clinical guidelines regarding atrial fibrillation.
- Analysis of epidemiological data and projections for AF incidence.
- Description of diagnostic characteristics and treatment principles for AF.
Main Results:
- AF is characterized by specific ECG findings and associated with various clinical factors.
- Treatment principles focus on stabilization, identifying causes, rate control, rhythm management, and stroke prevention.
- The article provides a comprehensive overview of AF epidemiology and acute management.
Conclusions:
- Atrial fibrillation management requires a multifaceted approach addressing acute symptoms, underlying causes, and long-term complications like stroke.
- Understanding the epidemiology and risk factors is essential for public health strategies and patient care.
- Prompt and appropriate intervention is key to mitigating the morbidity and mortality associated with AF.
Abstract:
Atrial fibrillation (AF) is a common acute or chronic cardiac disorder that can result in significant morbidity and mortality. Its incidence in the United States is increasing. Projections suggest that more than 5.6 million Americans (50% of whom will be > or =80 years of age) will have AF by 2050. The American College of Cardiology, American Heart Association, and the European Society of Cardiology define AF as a supraventricular tachyarrhythmia characterized by uncoordinated atrial activation with consequent deterioration of atrial mechanical function. On an electrocardiogram, AF is characterized by the replacement of P waves by rapid oscillations or fibrillatory waves that vary in size, shape, and timing. Evidence suggests that histological changes exist in the atria of patients with AF, however, it is not known if these changes are a cause or a consequence of AF. Although the fundamental mechanism underlying the disorder is not known, clinical identifying factors are associated with the condition. These may be divided into noncardiac (thyrotoxicosis, alcohol use, electrolyte imbalance, certain pharmacologic and recreational drugs) and cardiac causes (any cause of enlarged left atrium, poor ventricular function, heart surgery). The principles of treatment for this condition are to stabilize the patient hemodynamically, simultaneously determine whether a reversible cause of the AF exists, control the patient's heart rate, determine whether the patient should be cardioverted or maintained in AF, and then develop strategies to prevent the most important complications of stroke. This article will describe in detail the acute management of AF as well as its epidemiology.
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