A recent review of cardiovascular alterations in the parturient undergoing caesarean delivery with neuraxial anaesthesia showed that induction of spinal anaesthesia will lead to decrease in CO by 10-35% as measured by various invasive techniques. Although the patho-physiology of pregnancy and obesity and echocardiography findings gives us an understanding that these patients are more prone for severe hypotension and cardiovascular compromise the extent of alteration of haemodynamic variables in obese pregnant patients during spinal anaesthesia has not been studied previously. Our primary aim therefore is to investigate the haemodynamic alterations in obese parturient during spinal anaesthesia and compare it with those in non-obese parturient.