Echocardiographic Parameters for Predicting Maintenance of Sinus Rhythm After Internal Atrial Defibrillation

摘要: Chronic atrial fibrillation (AF), which is refractory to external electrical direct current shock and/or pharmacologic cardioversion, may be successfully cardioverted using internal defibrillation. To avoid unnecessary procedures, it important able predict patients will revert AF. Thirty-eight with chronic AF underwent successful defibrillation and were followed for 6 months after restoration of sinus rhythm. Left (LA) diameter, left ventricular ejection fraction, maximum LA appendage area, peak emptying velocities the analyzed determine these factors associated recurrence Forty-nine percent had a within following The preprocedural fraction (mean ± SD 59 + 14% vs 57 13%, p = 0.63), diameter (4.2 0.6 cm 4.5 cm, 0.16), area (5.0 1.5 cm2 5.8 cm2, 0.13) did not differ significantly between who maintained rhythm those Peak before cardioversion lower in compared (0.26 0.1 m/s 0.49 0.17 m/s, 0.001). A velocity <0.36 sensitivity 82% specificity 83% predicting