Background: Lower segment caesarean sections [LSCS] are the most common emergency or elective cases we come across. Majority of these cases are done under regional anaesthesia. Perioperative cardiac arrhythmias in these cases are common because of the altered physiology of pregnancy and anaesthesia. Significantly most of these arrhythmias are benign. However, some arrhythmias during spinal anaesthesia can cause sudden vascular collapse and lead to increased peri­partum morbidity and mortality. There are few case reports reported but the incidence of intraoperative arrhythmias is not well established. So this study on the incidence of arrhythmias during spinal anaesthesia in LSCS patients was undertaken. Methodology: We conducted this prospective study for a period of one year between august 2014 to august 2015. 957 patients underwent LSCS under spinal anaesthesia in this one year period. Out of which 68 patients were excluded as they had nonpregnancy related complications. 158 patients with pregnancy related complications like eclampsia, pre­eclampsia, gestational DM and gestational HT were also excluded. 10 cases got excluded as they had inadequate block so converted to GA. The study group included 721 patients.Results: 101 patients i,e 14% of them out of 721 patients developed arrhythmias perioperatively. Bradycardia was seen in 39[5.40%] patients followed by ventricular ectopics in 30 [4.16%] patients. Conclusion: Arrhythmias under anaesthesia are quite common. Most of these perioperative arrhythmias revert back spontaneously. Only few of them needs treatment and most of them have stable haemodynamics. The surgeons should be gentler and the anesthesiologists should be vigilant. Continuous, close monitoring of the patient is mandatory.

Keywords: Lower Segment Caesarean Sections [LSCS]; Perioperative Arrhythmias; Spinal Anaesthesia