“…The bibliographic review describes the use of the ESP block for postoperative analgesia in various pediatric surgeries, such as thoracotomy (3,4), pectus excavatum/ carinatum repair (5), vascular ring repair (6), sternotomy (7), major abdominal surgery (8), laparoscopic cholecystectomy (3,9), nephrectomy (3,10), hip surgery, inguinal hernia repair, orchidopexy, hydrocelectomy, varicocelectomy, ovarian surgery, breast surgery, anoplasty, pyeloplasty, circumcision y colostomy (3,12). There are also case reports of ESP block use in the treatment of neuropathic pain in burn patients (13), pediatric osteosarcoma, lumbar and epidural invasion. (14) The ESP block is a promising, simpler, and safer alternative to RA, epidural block or thoracic paravertebral block, because the ultrasound target can easily be visualized and the injection site is distant from the neuroaxis, the pleura and the principal vascular structures, reducing the possibility of complications.…”