Table 2

Procedure characteristics

Group I
(n=70)
Group II
(n=70)
Group III
(n=70)
Pulmonary vein antrum isolation70 (100%)70 (100%)70 (100%)
Cavo-tricuspid isthmus linear ablation12 (17%)12 (17%)18 (26%)
Supra vena cava isolation3 (4%)7 (10%)6 (9%)
Left atrial posterior wall isolation1 (1%)5 (7%)56 (80%) *
Mitral isthmus linear ablation2 (3%)3 (4%)4 (6%)
Low voltage zone modification2 (3%)0 (0%)1 (1%)
Other atrial tachycardia2 (3%)2 (3%)5 (7%)
Procedure time (min)251±53250±58188±38 †
Fluoroscopic time (min)25.1±10.015.1±7.3 *13.0±5.4 *
Radiation dose (mGy)295.0±263.0109.6±103.5 *110.1±89.6 *
3D-EMS (CARTO/Ensite/Rhythmia)64/6/046/24/0 ‡31/38/1 *
Contact force monitoring catheter64 (91%)46 (66%) ‡69 (99%)
  • *p<0.0001.

  • †p=0.002.

  • ‡p=0.0003.

  • 3D-EMS, three-dimensional electroanatomical mapping systems.