Fig. 7From: The effect of addition of magnesium sulfate or dexamethasone to bupivacaine on the post-operative analgesic duration of ultrasound-guided quadratus lumborum block in open abdominal surgeries: a comparative studyNumber of patients who maintained analgesia for 36 post-operative hours. Data are presented as number of patients. BS, Bupivacaine-Saline group; BM, Bupivacaine-Magnesium group; BD, Bupivacaine-Dexamethasone groupBack to article page