Abstract

Background Hypotension following spinal anaesthesia is one of the most common complication leading to poor maternal and fetal outcomes. This study is designed to assess the association between anthropometric parameters and incidence of hypotension in parturient's undergoing cesarean section under spinal anaesthesia. Aim and objectives The aim of this study is to evaluate if maternal anthropometric parameters like abdominal circumference, vertebral column length and symphysiofundal height has any effect on incidence of hypotension during cesarean section under spinal anaesthesia. Methods 100 term pregnant women aged between 18-45 years, ASA-PS grade 1-2 undergoing cesarean section under spinal anaesthesia were included in the study.The preoperative anthropometric parameters - Abdominal circumference(AC), symphysiofundal height(SFH) and vertebral column length (VC)were recorded. Spinal Anaesthesia was induced with 2ml of 0.5% Heavy Bupivacaine at the level of L2-L3. The haemodynamic parameters were recorded every 2 minutes up to 10 minutes and thereafter every 5 minutes up to 20 minutes after spinal anesthesia. Correlation analysis (Spearman's rank test) was performed to nd the correlations of AC , VC length and SFH with the incidence of hypotension. Statistical analysis was done using Chi square test, t test and one way ANOVA . P < 0.05 was considered statistically signicant . ResultsThe incidence of hypotension was directly proportional with increasing SFH and AC. The incidence of hypotension was 83% with SFH of 36–40 cm, 57% with AC 95–99cm, 78% with VC length of 50-55 cms and 22% with VC length of 56-60 cms which was statistically signicant ( P < 0.001). Conclusions The anthropometric measurements like AC, VC length and SFH can be a reliable predictor of hypotension and level of sensory blockade and can help in optimising the dose of spinal anesthetic drug .

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