Abstract
BackgroundIncreasing evidence has been presented which suggests that left ventricular (LV) diastolic dysfunction may play an important role in the development of atrial fibrillation (AF). However, the potential for LV diastolic dysfunction to serve as a predictor of AF recurrence after radiofrequency catheter ablation remains unresolved.MethodsDual Doppler and M-PW mode echocardiography were performed in 67 patients with AF before ablation and 47 patients with sinus rhythm. The parameters measured within identical cardiac cycles included, the time interval between the onset of early transmitral flow peak velocity (E) and that of early diastolic mitral annular velocity (e’) (TE-e’), the ratio of E to color M-mode Doppler flow propagation velocity (Vp)(E/Vp), the Tei index, the ratio of E and mitral annular septal (S) peak velocity in early diastolic E/e’(S) and the ratio of E and mitral annular lateral (L) peak velocity E/e’(L). A follow-up examination was performed 1 year after ablation and patients were divided into two groups based on the presence or absence of AF recurrence. Risk estimations for AF recurrence were performed using univariate and multivariate logistic regression.ResultsTE-e’, E/Vp, the Tei index, E/e’(S) and E/e’(L) were all increased in AF patients as compared with the control group (p < 0.05). At the one-year follow-up examination, a recurrence of AF was observed in 21/67 (31.34%) patients. TE-e’ and the Tei index within the recurrence group were significantly increased as compared to the group without recurrence (p < 0.001). Results from multivariate analysis revealed that TE-e’ can provide an independent predictor for AF recurrence (p = 0.001).ConclusionsDual Doppler echocardiography can provide an effective and accurate technique for evaluating LV diastolic function within AF patients. The TE-e’ obtained within identical cardiac cycles can serve as an independent predictor for the recurrence of AF as determined at 1 year after ablation.
Highlights
Increasing evidence has been presented which suggests that left ventricular (LV) diastolic dysfunction may play an important role in the development of atrial fibrillation (AF)
It is clear that an important relationship exists between LV diastolic dysfunction and AF and that dual Doppler echocardiography can serve as an effective technique for assessing LV diastolic function
time interval between E and septal e’ (TE-e)’、 E/e’(S)、 E/e’(L)、the Tei index and E/Vp were all increased in AF patients as compared with that of the control group (p < 0.05)
Summary
Increasing evidence has been presented which suggests that left ventricular (LV) diastolic dysfunction may play an important role in the development of atrial fibrillation (AF). Chen et al BMC Cardiovascular Disorders (2019) 19:257 within the same cardiac cycle. As a result, this technique provides a more accurate means for evaluating LV diastolic function, especially in patients with arrhythmias [10]. It is clear that an important relationship exists between LV diastolic dysfunction and AF and that dual Doppler echocardiography can serve as an effective technique for assessing LV diastolic function. The goals of this study were to use dual Doppler echocardiography as a means to: 1) determine the extent of LV diastolic dysfunction in patients with AF and 2) assess the predictive value of LV diastolic function for the recurrence of AF as determined at 1 year after RFCA
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