Comparative Study Between US Guided Erector Spinae and US Guided Cudal Epidural Block

Depending on the size of patient, either a 27 g 3 cm hypodermic needle or a 21 g 5 or 10 cm short bevel needle was used. All blocks were performed with the ultrasound guidance in the parasagittal position and with continuous in-plane needle visualization. The local anesthetic was deposited in the fascial plane deep to the erector spinae muscle superficial to the transverse processes, after confirming the correct tissue plane by hydro-dissection. protocols for choosing 0.25% bupivacaine with a dose of 0.5ml/kg was determined by the age and weight of the patient.