Background: The study was aimed to study the hemodynamic changes after sub arachnoid block in females undergoing LSCS and co-relate post-spinal hypotension with baseline heart rate. Methods:The study was done on 100 females. They were undergoing LSCS requiring sub-arachnoid block (SAB).Under all aseptic precautions SAB was given with Inj. Bupivacaine 0.5% (H) 2ml (10 mg) with 10mcg Fentanyl. Heart rate, systolic, diastolic, mean arterial pressure was recorded every 2 min for 10 min & thereafter every 10 min till the end of the surgery. Data was expressed as mean ± standard deviation. Demographic data like age, gestational age, gravida status and hemodynamic variables like heart rate, systolic blood pressure, diastolic blood pressure and mean arterial blood pressure were analysed statistically. Correlation between Baseline Heart Rate and post spinal hypotension was found by using the coefficient of correlation test. Conclusion: Majority of patients develop hypotension after SAB and this hypotension was easily treated using fluids and vasopressors. Hypotension was not always accompanied with bradycardia but when it rarely does, aggressive resuscitation with vasopressors and atropine is necessary. As compared to post spinal hypotension, the incidence of bradycardia is very rare.
