Fig. 1From: Continuous PECS II block for postoperative analgesia in patients undergoing transapical transcatheter aortic valve implantationUltrasound images related to PECS block. a An image just after the catheterization was obtained with catheter tip being located between the pectoralis minor and the serratus muscles on forth rib. b A postoperative image was obtained with displacement of the catheter tip deep in the pectoralis major muscles. PM pectoralis major muscle, Pm pectoralis minor muscle, SP serratus muscleBack to article page