Role of Minimal Dose of Norepinephrine in Prevention of Hypotension Induced by Subarachnoid Anesthesia in Elective Cesarean Section

Abstract

nesthesiologists prefer the technique of spinal anesthesia in elective cesarean section for its rapid onset, fewer risk of local anesthetic toxicity, minimal transfer of the drugs to fetus and dense neural block. While general anesthesia is preferred when there is an absolute contraindication for regional anesthesia or in cases of emergency which will need rapid sequence induction. Maternal hypotension following spinal anesthesia is one of the leading complications and most anticipating one. Maternal hypotension is defined as decrease in systolic blood pressure by a 20% from baseline which may cause a series of event during cesarean section. So, it is important to be treated if happened and prevent it in order to preserve normal maternal blood pressure and adequate blood supply to uterus, placenta and fetus. To overcome the problem of maternal hypotension induced by regional anesthesia especially subarachnoid anesthesia there are many measures to be taken in consideration avoidance of aortocaval compression, intravenous administration of crystalloids also, frequent monitoring of arterial blood pressure after placing of regional anesthesia all are measures. Vasopressor administration is one of customary way in treating of hypotension and one of the vasopressors showed a