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Assessment of Left Atrial Mechanics in Patients with Preexcitation Syndrome Scheduled for Catheter Ablation
Author(s) -
Karakoyun Süleyman,
Tanboğa Ibrahim Halil,
Gökdeniz Tayyar,
Lazoğlu Zakir,
Topçu Selim,
Karal Hüseyin,
Aksakal Enbiya,
Sevimli Serdar
Publication year - 2016
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/echo.13040
Subject(s) - medicine , cardiology , strain (injury) , radiofrequency catheter ablation , accessory pathway , ablation , catheter ablation , wpw syndrome , population , environmental health , tachycardia
Objectives We aimed to test the left atrial ( LA ) mechanics and contraction synchrony by 2D strain imaging, in patients with Wolff–Parkinson–White ( WPW ) syndrome, before and after radiofrequency catheter ablation ( RFCA ). Methods Study population consisted of 25 patients with WPW scheduled for RFCA and 30 healthy controls. The peak LA strain at the end of the ventricular systole ( LA s strain) and the LA strain with LA contraction ( LA a Strain) were obtained. To assess LA dyssynchrony, septal versus lateral wall time‐to‐peak strain measurements were measured. Results There was no difference between the patients with WPW and control subjects with regard to peak LA s and LA a strain. Patients with WPW demonstrated higher global time‐to‐peak LA s and LA a strain values compared with the control group. Peak LA s strain and LA a strain values, measured before and after the RF ablation of the accessory pathway, were comparable (34.3 ± 3.92 vs. 34.6 ± 3.2, P = 0.816, 14.7 ± 2.8 vs. 15.3 ± 2.3, P = 0.052, respectively). Global time‐to‐peak LA s and LA a strain measurements were significantly shorter after the RFCA compared with the values obtained before the RFCA . However, septo‐lateral times to peak LA strain differences were found to be comparable in both WPW versus control and pre‐ versus postablation groups. Conclusion LA mechanical function assessed by 2D strain imaging was comparable between patients with WPW and control subjects. Patients with WPW had more prominent LA dyssynchrony during atrial pump phase as compared with the controls, a condition which could not improve after successful elimination of the accessory pathway by RFCA .