Benefit of Left Atrial Roof Ablation in Paroxysmal Atrial Fibrillation

Inclusion Criteria:

• Drug-refractory paroxysmal atrial fibrillation

Exclusion Criteria:

• Hypo or hyperthyroidism

• Implantable defibrillation or pacemaker implanted

• Moderate or severe mitral valve disease or mitral prosthetic valve

• Ejection fraction less than 30%

• Left atrial anteroposterior diameter more than 50 mm.

• Previous atrial fibrillation ablation

• Left atrium thrombus

• Current infective disease or sepsis

• Pregnant women

• Current unstable angor

• Acute myocardial infarction in last 3 months

• Atrial fibrillation secondary to ionic disturbance, thyroids disease or secondary toany other reversible or non cardiovascular disease

• Reduced expectancy of life (less than 12 months)

• Patient participating in another clinical study that investigates a drug or device

• Psychologically unstable patient or denies to give informed consent