Fig. 1From: Ultrasound-guided erector spinae plane block in patients undergoing pediatric abdominal surgery: a randomized studyUltrasound-guided demonstration of the erector spinae plane block. A The patient was placed in the lateral decubitus position after anesthesia induction. The ultrasound lineer probe is placed in a longitudinal parasagittal orientation. B The block needle is inserted in plane in a cranial-to-caudal direction to contact the transverse processes. Needle location indicated by arrows with LA deposited deep to the erector spinae muscleBack to article page