Figure 4From: Human comparative experimental study of surgical treatment of atrial fibrillation by epicardial techniques Percentage of procedures in which transmurality histological lesions were found according to the type of energy used (* significantly difference between cryotherapy against both radiofrequency and ultrasound (p=0.0053); ** no statistical difference between radiofrequency against both cryotherapy and ulstrasound (p=0.11)). Back to article page