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Journal of Obstrectic Anaesthesia and Critical Care
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Year : 2012  |  Volume : 2  |  Issue : 1  |  Page : 10-15

Crystalloid preload versus crystalloid coload for parturients undergoing cesarean section under spinal anesthesia

Department of Anaesthesiology and Critical Care, Christian Medical College, Ludhiana, Punjab, India

Correspondence Address:
Aparna Williams
Department of Anesthesiology and Critical Care, Christian Medical College and Hospital, Ludhiana - 141008, Punjab
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2249-4472.99309

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Context: There is a paucity of studies comparing crystalloid preload and coload in parturients undergoing cesarean section under spinal anesthesia from India. Aims: To compare crystalloid preload and coload for the prevention of maternal hypotension in parturients undergoing cesarean section under spinal anesthesia. Secondary outcomes studied included requirement of ephedrine for treatment of hypotension, maternal nausea and vomiting, neonatal APGAR scores and acid base status. Settings and Design: Tertiary level, teaching hospital. Prospective, randomized study. Materials and Methods: Hundred parturients, aged 20 to 40 years, American Society of Anesthesiologist (ASA) physical status 1 or 2, with singleton, uncomplicated pregnancies scheduled for cesarean section under spinal anesthesia were randomized into two groups. Subjects in group P received 15 ml/kg of lactated Ringer's (RL) solution as preload over 20 min before the placement of spinal block, while those in group C received 15 ml/kg of RL over 20 min, starting as soon as CSF was tapped. Statistical Analysis Used: Student's t-test, Chi-square test, Fisher's test. Results: The number of parturients developing hypotension in group P and C was 30 and 23 respectively and was comparable statistically. More number of patients developed nausea (19 versus 10, P = 0.0473) and vomiting (14 versus 6, P = 0.0455) in group P as compared to group C and these values were statistically significant. The mean number of doses of ephedrine required (2.6 in group P and 1.8 in group C) and the total dose of ephedrine used (14.2 mg and 12.6 mg in groups P and C respectively) in the groups were comparable statistically. Conclusions: Both preloading and coloading with 15 ml/ kg of RL solution are ineffective in the prevention of spinal-induced maternal hypotension. We recommend frequent monitoring of maternal blood pressure (at 1-min intervals) and prompt treatment of maternal hypotension with vasopressors for better neonatal outcomes.

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