الفهرس 
Definition of post spinal hypotensionOnly 14 pages are availabe for public view
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Abstract
CONTEXT: Preloading of crystalloid is a traditional practice to prevent spinal anesthesia induced hypotension. But coloading seems to be more physiological and rational approach as effect was achieved during the time of spinal anesthesia.
AIMS: To compare crystalloid preload and coload for the prevention of spinal block induced hypotension in lower limb surgeries. Secondary outcomes included no. of dose of ephedrine, bradycardia, nausea, vomiting, total volume of infusion, blood loss & urine output.
MATERIALSAND METHODS: Total 82 patients , aged 20 to 40 years, scheduled for elective cesarean section under spinal anesthesia were randomized into preload and coload group, 41 patients in each group. In preload group, 20 ml/kg of Ringer lactate was preloaded 20 minutes before commencement of spinal anesthesia. In Coload group, 20 ml/kg of Ringer lactate was coloaded in 20 minutes just after lumbar puncture.
RESULTS: patient characteristics were comparable in bothgroups (p>0.05). Mean baseline value and trends at various time intervals of heart rate, Systolic blood pressure, diastolic blood pressure, and mean blood pressure were comparable in both groups. Total incidence of hypotension and bradycardia were higher in preload group. Incidence of vomiting, blood loss and uop were higher in Preload group but it was statistically insignificant. Number of patients required ephedrine for treatment of hypotension was higher in preload group but with no statistical difference.
CONCLUSIONS: Coloading with 20 ml/kg of Ringer’s lactate was as effective as preloading of same amount 20 minute before lumber puncture to prevent spinal induced hypotension.