Fig. 2From: Comparison of different approaches to combined spinal epidural anesthesia (CSEA) under the guidance of ultrasound in cesarean delivery of obese patients: a randomized controlled trialA Location of median approach on the skin. B Location of paramedian approach on the skin. C The distance from the skin to the epidural space guided by ultrasound in the median approach group. D The distance from the skin to the epidural space guided by ultrasound in the paramedian approach groupBack to article page