A Randomized Comparative Study Between 25-Gauge and 27-Gauage Pencil Point Spinal Needles During Dural Puncture Epidural Anaesthesia For Elective Caesarean Section

DPE technique was performed by creating a perforation in the dura mater using a pencil point spinal needle (25-27G) through the shaft of an epidural needle. After the dural perforation was created and the free flow of the cerebrospinal fluid (CSF) was confirmed, which was considered a definitive end point for the likely positioning of the epidural needle tip within the epidural space, and by avoiding direct intrathecal administration of medication making DPE technique of fewer adverse effects in comparison to CSE technique, then spinal needle was withdrawn without local anesthetic injection into the subarachnoid space and the epidural catheter was normally placed in the epidural space followed by injecting local anesthetics into the epidural space via the epidural catheter, where the dural puncture created a conduit for translocation of local anesthetics from the epidural space to the subarachnoid space which was a unique feature of DPE technique.

Our study assessed the efficacy of DPE with pencil point spinal needle (25-27 G) during elective CS. Primary outcome was the onset time of surgical anesthesia which is defined as the time from the end of the initial dose injection to when the bilateral sensory block level reached the T6 dermatome. secondary outcomes were number of patients with cranial sensory block toT6 Level, number of patients with a modified bromage score reaching 3 at 15 min, intraoperative IV analgesia, local anesthetic volume, incidence of vasopressor administration and maternal &fetal complications.