Background: Spinal anaesthesia for caesarean section induces hypotension, which may cause severe adverse effects. Our goal was to determine whether hypotension could be predicted by pulse oximetry parameters, such as the perfusion index and pleth variability index, heart rate, ratio of low-frequency to high-frequency components of heart rate variability, and entropy of heart rate variability, measured before the induction of anaesthesia. Aim and Objective: To compare of the hemodynamic parameters during and after caesarean delivery Methodology: The Institutional Research Committee gave its approval before the current study could be carried out in the Department of Anesthesiology at Santosh Medical College and Hospital. The current research was done from August 2016 to July 2017.Three groups of 30 patients each were randomly selected from a sample size of 90 individuals. Result: We measured the baseline mean heart rate. In groups B, BF1, and BF2, it was 81.4 ±2.17, 80 ±2.81, and 80.067±3.62 respectively. In all three groups, the heart rate decreased, with group B experiencing the greatest decrease. When compared to baseline data, Group B's heart rate dropped to 59.77±2.4 at its greatest point after 15 minutes. Conclusion: Our study was to investigate whether the PI, PVI, heart rate, LF-to-HF ratio, and entropy measured before the induction of spinal anaesthesia could predict hypotension during caesarean section.