NCT03849508

Phenylephrine Versus Norepinephrine for Maintenance of Hemodynamic During Cesarean Section Under Spinal Anesthesia

Randomized, Double-blind, Controlled Clinical Trial for Comparison of Continuous Phenylephrine Versus Norepinephrine Infusion for Maintenance of Hemodynamic Stability During Cesarean Section Under Spinal Anesthesia

• Status: Completed
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 124 (actual)
• Sponsor: Centre Hospitalier Régional d'Orléans · Academic / Other
• Sex: Female
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Comparison between prophylactic continuous variable infusion of phenylephrine (starting dose 0,5mcg/kg/min) and norepinephrine tartrate (starting dose 0,1mcg/kg/min) to prevent hypotension and maintain cardiac output under spinal anesthesia during cesarean delivery.

Detailed description

Maternal hypotension is a frequent complication after spinal anesthesia for cesarean delivery. Many vasopressors have been studied and used, but the perfect vasopressor is yet to be found. Phenylephrine is the most common used in obstetric anesthesia but its cardiac depressant activity, being an only alpha-adrenergic agonistic, is linked to frequent side effects such as bradycardia and decreased cardiac output. Norepinephrine is a vasopressor characterized by both alpha and minor beta-adrenergic agonistic activity, it has then a minimal cardiac depressant activity. Hence it would provide a better stability of hemodynamic and cardiac output, and appears as a better alternative to phenylephrine. In this study, the investigators will compare prophylactic continuous variable infusion of both vasopressors. Phenylephrine started at the dose of 0,5mcg/kg/min and Norepinephrine tartrate started at the dose of 0,1mcg/kg/min. The doses will be adjusted according to maternal systolic blood pressure in order to prevent hypotension (defined by a systolic blood pressure under 80% of baseline).

Conditions

• Cesarean Section Complications
• Spinal Anesthesia

Interventions

Type	Name	Description
DRUG	Norepinephrine	Drug: Norepinephrine Norepinephrine tartrate variable infusion with a starting rate of 0,1μg/kg/min (equivalent to norepinephrine base of 0.05 μg /Kg/min). Other name: Noradrenaline Drug: Hyperbaric Bupivacaine will be injected in the subarachnoid space with a dose of 8 to 12 mg adjusted according to height Drug: Sufentanil will be injected in the subarachnoid space with a dose of 2,5μg Drug: Morphine will be injected in the subarachnoid space with a dose of 100 μg
DRUG	Phenylephrine	Drug: Phenylephrine variable infusion with a starting rate of 0,5μg/kg/min Drug: Hyperbaric Bupivacaine will be injected in the subarachnoid space with a dose of 8 to 12 mg adjusted according to height Drug: Sufentanil will be injected in the subarachnoid space with a dose of 2,5μg Drug: Morphine will be injected in the subarachnoid space with a dose of 100 μg

Timeline

• Start date: 2019-02-27
• Primary completion: 2020-12-02
• Completion: 2020-12-02
• First posted: 2019-02-21
• Last updated: 2021-05-27

Locations

1 site across 1 country: France