Ultrasound Improves The Success Rate Of Lumbar Needle Puncture During Combined Spinal And Epidural Anesthesia: A Randomized Controlled Trial

Combined lumbar and epidural anesthesia is widely used in cesarean section because of its rapid onset, precise analgesia, perfect muscle relaxation, and the ability to provide additional anesthesia and analgesia through an epidural catheter. However, successful puncture of epidural needle during anesthesia does not guarantee successful puncture of lumbar anesthesia needle. The failure or difficulty of lumbar anesthesia needle puncture not only increases the time of anesthesia implementation, but also increases the risk of nerve injury and reduces patient satisfaction. Ultrasound-assisted low back anesthesia or epidural anesthesia has been successfully carried out for many years, and many studies have proved that compared with the traditional spinal anesthesia with body surface marker positioning, the ultrasound-assisted spinal anesthesia is safer and has higher patient satisfaction. At present, studies on ultrasound-assisted CSEA mainly focus on the overall success rate of anesthesia implementation and the difficulty of the implementation process. Few studies have explored whether preoperative ultrasound localization can improve the success rate of the first lumbar anesthesia needle puncture during CSEA.

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