Efficacy of crystalloids and colloids as preloading fluids to prevent hypotension in spinal anesthesia in elective C-sections

Aim: to compare the efficacy of crystalloids and colloids in preventing hypotension in spinal anesthesia in elective caesarean sections. study design: randomized control trials. setting: department of gynae & obs lady willingdon hospital/k. e. medical university lahore duration of study: six months methods: a total of 200 patients were divided into two equal groups,group [rl] receiving 20ml/kg of ringer lactate as crystalloid and group [h] receiving 500 ml of 3% heamaccel as preloading fluid 15 min prior to administration of spinal anesthesia for elective c-section. results: 200 pregnant females undergoing elective cesarean section under spinal anesthesia were included. the mean age of all the patients was 26.66±3.38years,145 females were asa class 1 while 55 females were asa class 2. mean drop in blood pressure was from 119.71±6.93mmhg to 87.66±10.19mmhg. bp was dropped from 119.37±7.02mmhg to 87.98±10.73mmhg in crystalloid group and in colloid group; it dropped from 120.04±6.85mmhg to 87.98±9.65mmhg. the overall efficacy was achieved in 140(70%) patients while in 60(30%) patients efficacy could not be achieved. in crystalloid group,71 females showed efficacy and in colloid group,69 females showed efficacy. conclusions: according to this randomized trial we did not find any significant difference between both groups for prevention of hypotension. in both groups,maximum patients had stable bp level.