Clinical observation of tachycardia-induced cardiomyopathy after radiofrequency cather ablation
10.3969/j.issn.1006-5725.2014.07.023
- VernacularTitle:心动过速型心肌病射频消融后的临床观察
- Author:
Feifei ZHANG
;
Xinhui PENG
;
Hao YANG
;
Fumei HUANG
;
Liwei HE
;
Wenyuan LAI
;
Jian PENG
- Publication Type:Journal Article
- Keywords:
Cardiomyopathies;
Cather ablation;
Left ventricular systolic function;
Echocardiography
- From:
The Journal of Practical Medicine
2014;(7):1084-1087
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the baseline echocardiographic characteristics and the time course and degree of recovery of left ventricular (LV) systolic dysfunction in patients with tachycardia-induced cardiomyopathy ( TCM ) . Methods Seven hundred and fifteen patients received radiofrequency cather ablation ( RFCA ) for tachycardiarrhymias from July 2010 to July 2013 were screened in this study. Only 33 patients with reduced left ventricular ejection fraction (LVEF) (LVEF<50% and improved≥15%) were diagnosed with tachycardia-induced cardiomyopathy and were included in the study. Patients with early improvement (over 25%increase in LVEF at 1-week follow-up compared to the baseline ) were enrolled in the improved group , and the rest patients were enrolled in the improved group. All Patients received transthoracic echocardiography for LV size and function detection at 1 week and at 3,6,12 months follow-up. Results The average baseline of the LV end-diastolic diameter, and the LVEF were (55 ± 10.7)mm and (38 ± 4.6)%, repectively. Early improvement ( over 25%increase in LVEF at 1-week follow-up compared to the baseline ) in the improved group was observed in 16 patients. Patients with early improvement had higher LVEF at 12-month follow-up compared to the patients without early improvement [(69.2± 4.2)% vs (58.1 ± 6.9)%, P < 0.001]. Conclusions RFCA is proved to be a relatively safe and effecient treatment method. Atrial fibrillation related to TCM , rhythm control is superior to the rate control. The early improvement in LVEF may potentially predict the complete reversibility of LV systolic dysfunction.
