Comparison of fractionated dose versus bolus dose injection of heavy bupivacaine with fentanyl in spinal anaesthesia for patients undergoing elective caesarean section: one year randomized clinical trial

Abstract

Background and aim: Maternal hypotension is the common complication encountered after subarachnoid block (SAB). This needs attention and treatment for the better maternal and foetal outcome. Administration of SAB with a bolus dose of local anaesthetic produce faster onset and precipitate maternal hypotension. Injecting a fractionated dose provides dense block and haemodynamic stability. Aim of this study was to compare fractionated and bolus dose of SAB in terms of haemodynamic stability and analgesia period.