The Ultrasound Guided Versus Land-mark Location Method for Performing Spinal Anesthesia in Obese Parturients

This study will be investigated whether an ultrasound-assisted technique is better than a classical land-mark technique to facilitate spinal anesthesia in the lateral position in morbidly obese pregnant women with BMI ≥ 40 who will undergo elective cesarean section. The primary objective in this study is the rate of successful dural puncture at the first attempt. It was assumed that ultrasound could facilitate neuraxial blockade in grade 3 morbidly obese pregnant women according to the Who classification, whose topographic anatomy is difficult.