<qa>  What is the ablation strategy that does not depend on complete line deployment?In addition, an ablation strategy that does not depend on complete line deployment may be sufficient to achieve stable sinus rhythm. Although, additional linear lesions between the PV isolation segments and towards the mitral annulus as proposed by several centers with incomplete linear PV isolation approaches might not be necessary to achieve stable sinus rhythm. Potential complications such as atrio-esophageal fistula formation could be avoided if no additional lesions eg. along the LA roof would be necessary. Both the costs of the additional material transseptal sheaths, circular mapping catheters and the shorter procedure duration about 2 hours would be reduced. On the other hand, these costs would be balanced by the reduced number of re-ablation, if incomplete PV isolation would indeed lead to a higher AF recurrence rate. 