The surgical procedure able to fulfill these objectives was described as the Maze technique, presented by James L. The main aims of the surgical treatment of permanent AF are: to relieve the propitiated symptoms by reestablishing sinus rhythm, atrioventricular resynchronization, to maintain the effective atrial contractility, with a consequent improvement in the hemodynamic performance and to reduce the risk of thromboembolic phenomena occurring. Surgical treatment of AF is normally recommended in cases of permanent AF with associated structural heart diseases with surgical indication. Figure 1 shows the electrophysiological bases of the two main clinical forms of AF.Īccording to the American College of Cardiology/American Heart Association classification, the intermittent form corresponds to the paroxysmal and persistent forms, while the continuous form would be equivalent to the permanent form of AF. Thus, AF can appear in two principal clinical forms, intermittent and continuous, constituted by different electrophysiological bases. The classification is based on the constancy of arrhythmia or not. James Cox proposed a new classification of the symptoms of the disease. It is fundamental that the electrophysiological bases of this arrhythmia are well understood to comprehend its symptoms and to establish the correct treatment. The association between AF and structural heart diseases is common among patients with mitral valve disease indicated for surgery, with from 40% to 60% of the cases presenting with AF during the surgery. It can present with high morbid-mortality rates due to hemodynamic involvement, the cardiomyopathy originating from the tachycardia and to the occurrence of thromboembolic phenomena. Atrial fibrillation (AF) is a sustained tachyarrhythmia commonly seen in the clinical practice.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |