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Corresponding Background Cesarean sections normally require an anesthetic block at T4 level, so hypotension is reported to occur in up to 80% of spinal anesthesia cases. When maternal hypotension associated with spinal anesthesia for cesarean section is severe and sustained, it can lead to serious maternal complications as well as impairment of the uterine and placental blood flow with consecutive fetal hypoxia, acidosis, and neurological injury. Aim of the Work to compare the administration of intermittent i.v. boluses of norepinephrine and ephedrine to counterbalance the hypotensive effect of spinal anesthesia during cesarean delivery. The results of the study showed that compared with ephedrine, norepinephrine maintained maternal blood pressure and uterine artery blood flow. Further, it was associated with lower numbers of hypotension and hypertension episodes and less frequency of bradycardia and tachycardia during cesarean delivery. Furthermore, the numbers of boluses of vasopressors used during spinal anesthesia were lower in norepinephrine compared with the use of ephedrine. Conclusion Norepinephrine can be used as an alternative vasopressor to maintain maternal blood pressure during spinal anesthesia for cesarean delivery, with no adverse effect on neonatal outcome.

Norepinephrine versus Ephedrine Boluses To Treat Spinal-Induced Hypotension in Cesarean Deliveries