LiDCOrapidV2(LiDCO Group plc, LiDCO Limited, United Kingdom), incorporates the CNAPTM (continuous noninvasive arterial pressure) module that derives CO, SV, and SVR from a continuous noninvasive arterial waveform and analysed by the PulseCOTM algorithm avoiding invasive blood pressure measurements. This study studies the clinical application of the LIDCOrapidV2 and compares the haemodynamic variables in obese and non-obese pregnant women having CS under spinal anaesthesia.