Thermocool SF Catheter Versus Thermocool Catheter in Isthmus-dependent Atrial Flutter Ablation (Cathena)

Effectiveness and Safety of Porous Tip Irrigated Ablation Catheter Versus Conventional Irrigated Catheter in Isthmus Dependent Atrial Flutter Ablation: a Randomized Study

Porous tip catheter use reduces procedure time and RF time in atrial flutter ablation with the same safety.

New porous tip catheters appear more effective in atrial fibrillation ablation than conventional irrigated catheter, with the same safety. We could hypothesize porous tip irrigated catheters are more effective than conventional irrigated catheter, reducing procedure time and RF ablation time.We realize a randomized comparison study. For that, 70 patients with an indication for isthmus-dependent atrial flutter ablation will be randomized to conventional irrigated catheter ablation or porous tip irrigated catheter ablation. A ECG-Holter examination will be done at 1 month follow up after catheter ablation, 6 and 12 months.

Patients with isthmus dependent atrial flutter, undergone to catheter ablation with Thermocool® (Biosense Webster, Diamond Bar, CA) irrigated catheter

Patients with isthmus dependent atrial flutter, undergone to catheter ablation with Thermocool® SF(Biosense Webster, Diamond Bar, CA) irrigated catheter

A duodecapolar isthmic curve catheter will be introduced to demonstrate cavo-tricuspidal bidirectional block. We performed atrial flutter ablation with conventional irrigated Thermocool® (Biosense Webster, Diamond Bar, CA) catheter Continuous lesions from tricuspidal annulus to inferior vena cava will be realized and then complete isthmic block will be confirmed by bidirectional stimulation

A duodecapolar isthmic curve catheter will be introduced to demonstrate cavo-tricuspidal bidirectional block. We performed atrial flutter ablation with Porous tip Thermocool® SF(Biosense Webster, Diamond Bar, CA)irrigated catheter Continuous lesions from tricuspidal annulus to inferior vena cava will be realized and then complete isthmic block will be confirmed by bidirectional stimulation

Inclusion Criteria: All patients undergone to cti-dependent atrial flutter ablation. Exclusion Criteria: Left atrial flutter or atrial fibrillation Femoral venous access not available. Anticoagulation not therapeutic in patients at high thrombo-embolic risk Other contraindications to radiofrequency ablations: pregnancy, malignancy

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