A Study of Phenylephrine Administration for the Prevention and Treatment of Hypotension in Cesarean Section during Spinal Anaesthesia

Abstract

Background: Hypotension remains the most common complication following spinal anesthesia in cesarean sections. Despite using various preventive measures, hypotension occurs in most cases; vasopressors are often required. The current study evaluated the safety and efficacy of prophylactic phenylephrine infusion in preventing spinal anesthesia-induced hypotension in the Cesarean Section. Materials and Methods: A total of 50 parturients aged 20-35 years with American Society of Anesthesiologists (ASA) grade II, scheduled for elective cesarean sections were randomly allocated into one of the two groups. Group A (n=25) received intravenous prophylactic phenylephrine infusion at 100?g/min for 3min after spinal anesthesia using a syringe pump. Each minute, systolic arterial pressure (SAP) was measured, and infusion stopped if SAP > baseline and continued if less than or equal to baseline systolic arterial pressure. Intravenous phenylephrine bolus 100?g was given when SAP decreased to