Fig 1.
(A) Tissue Doppler images of the mitral annular septal area (peak diastolic velocity [Em]) and the flow velocity of mitral inflow were acquired. Patients with E/Em>15, suggesting left ventricular (LV) diastolic dysfunction, were excluded. (B) LAPpeak (v wave), LAPnadir (x wave), and LAPmean were measured during sinus rhythm, and LA pulse pressure (LApp) was calculated by subtracting LAPnadir from LAPpeak (the difference between LAPpeak and LAPnadir).
Table 1.
Clinical characteristics of patients.
Fig 2.
Typical examples of patients with low (A) or high (B) LA compliance.
(Electroanatomical mapping was performed during high right atrial pacing 500ms.) Patients with low LA compliance (A) have relatively smaller LA volume and lower endocardial voltage than patients with high LA compliance and show poor clinical outcome of AF after RFCA.
Table 2.
Baseline characteristics of patients according to the LA compliance.
Table 3.
Multivariate regression analysis of factors related to low LA compliance (LApp ≥ 13mmHg).
Table 4.
Multivariate Cox regression analysis of clinical AF recurrence after RFCA
Fig 3.
Patients with low LA compliance (LApp≥13mmHg) have a higher recurrence rate than those with high LA compliance.