Keywords:
Cardiac, CT, MR, Ablation procedures, Outcomes
Authors:
M. Salel1, H. Cochet2, F. Laurent2, M. Montaudon2, O. Corneloup2, V. Latrabe2, A.-A. Tassadit3, H. Nivet3, G. Chevreau3; 1Vigoulet-Auzil/FR, 2Pessac/FR, 3Bordeaux/FR
Results
Patient characteristics at baseline
Baseline characteristics are shown in Table 1.
No significant difference was observed between the group with and the one without image integration.
Procedural characteristics
Procedural characteristics are shown in Table 2.
LAVA were observed in 53/58(91%) patients on endocardium and 22/31(71%) on epicardium.
Clinical VT was inducible in 33(57%) patients.
Complete LAVA elimination was achieved in 38/58(66%) patients.
Clinical/non-clinical VT was inducible after the procedure in 0(0%)/7(12%) patients.
No difference was found in complete LAVA elimination rate and loss of inducibility (procedural endpoints) between the group with image integration and the one without (P=0.47,
P=0.22).
The only difference between the 2 groups was a more frequent use of electroanatomical mapping systems in the group with image integration (P<0.0001).
Determinants of outcome
Univariable and multivariable analyses are presented in Table 3 and Table 4.
Absence of image integration,
incomplete LAVA elimination,
low left ventricular ejection fraction and longer radiofrequency duration were independent predictors of VT recurrence.
Kaplan Meier survival plots illustrating the impact of image integration on VT free survival rate are shown in Figure 2.