Implantable Atrial Defibrillators
| Autor: | Russell E. Hillsley, J M Wharton |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
medicine.medical_specialty
Defibrillation Paroxysmal atrial fibrillation medicine.medical_treatment Pain Physiology (medical) Internal medicine Atrial Fibrillation medicine Animals Humans cardiovascular diseases Coronary sinus business.industry Atrial fibrillation Equipment Design medicine.disease Defibrillators Implantable Patient tolerance medicine.anatomical_structure Shock (circulatory) cardiovascular system Cardiology Right atrium medicine.symptom Cardiology and Cardiovascular Medicine business |
| Zdroj: | Journal of Cardiovascular Electrophysiology. 6:634-648 |
| ISSN: | 1540-8167 1045-3873 |
| Popis: | Due to the limited efficacy of antiarrhythmic drugs for atrial fibrillation, several nonpharmacologic therapeutic options have evolved. One of these is an implantable atrial defibrillator. Recent studies have shown that internal atrial defibrillation is feasible with relatively low energies. To date, the optimal electrode configuration involves large surface area catheters in the right atrium and coronary sinus. In humans, atrial defibrillation can generally be achieved with < 2 J using this electrode configuration and a biphasic shock waveform. For shocks < 5 J, there is no significant pathological damage to the atria or coronary sinus. Further investigation is needed to guarantee that atrial defibrillation shocks do not provoke ventricular arrhythmias. Preliminary data suggest that atrial defibrillation shocks synchronized to R waves that are not closely coupled are safe. In addition, the shocks are well tolerated if the shock energy is < 1.5 J. With additional studies to confirm the safety of implantable atrial defibrillators, further reduce shock energy, and improve patient tolerance, an implantable atrial defibrillator can become an acceptable therapy for patients with symptomatic, paroxysmal atrial fibrillation. |
| Databáze: | OpenAIRE |
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