Fig. 7From: Ultrasound-guided ilioinguinal-iliohypogastric block (ILIHB) or perifocal wound infiltration (PWI) in children: a prospective randomized comparison of analgesia quality, a pilot studya Percentage of children within their group who did not need analgesics; b Percentage of children within their group who received an opioid (piritramide). Grey: children in the US-ILIHB group, white: Children in the PWI groupBack to article page