Effect Of Baby Weight On Characteristics Of Spinal Anaesthesia In Parturients Undergoing Lower Segment Cesarean Section

Abstract

Back ground: Various characteristics such as height, weight, abdominal girth, symphysio-fundal height had studied for its effect on spinal anaesthesia in Parturients. However, we designed a study to determine the impact of a baby's birth weight on the characteristics of spinal anaesthesia rather than using indirect indicators like symphysis-fundal height or belly size.

Materials and methods: We included a total of 110 parturients who delivered by cesarean section under spinal anesthesia. All parturients, who fitted into inclusion criteria, received spinal anaesthesia with 2cc 0.5% bupivacaine following spinal anaesthesia. Sensory blockade was evaluated every 30 seconds till highest sensory blockade achieved. Motor blocked checked by bromage scale every minute till complete blockade. Number of hypotensive episodes and vasopressor requirement calculated at the end of surgery. Time of 2 segment regression and weaning of motor blockade was also noted in both the group. Baby weight noted in both the groups and parturients grouped according to baby weight, group I baby weight less than 3kg, group II baby weight more than 3kg. Hemodynamic continuous monitoring done and recorded at 1, 2,3,5, 10, 15, 20, 30, 40, 50, 60 minutes and every 15minutes till the end of surgery.

Results: The sensory blockade level of spinal anesthesia T6, was achieved at 2 min in two parturients in group II. At 3 min 12 patients in group I and 13 patients in group II patients. Majority of the parturient in both groups achieved T6 level within 5 mins. Majority attained complete motor blockade at 8^th min in both group I and group II. However, group II patients attained complete motor blockade little late than group 1.

Conclusions:  We did not find any statistically significant association between weight of the baby and sensory blockade, motor blockade and duration of analgesia.