NCT04556370

Norepinephrine Prophylaxis for Postspinal Anesthesia Hypotension in Parturients With Preeclampsia.

Norepinephrine Prophylaxis for Postspinal Anesthesia Hypotension in Parturients With Preeclampsia Undergoing Cesarean Section: a Randomized, Placebo-controlled Dose-finding Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 180 (actual)
• Sponsor: General Hospital of Ningxia Medical University · Academic / Other
• Sex: Female
• Age: 18 Years – 45 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to investigate the suitable infusion dose of norepinephrine for prophylaxis against postspinal anesthesia hypotension in parturients with preeclampsia undergoing cesarean section.

Detailed description

Preeclampsia, which affects 5% to 7% of parturients, is a significant cause of maternal and neonatal morbidity and mortality. Because of constricted myometrial spiral arteries with exaggerated vasomotor responsiveness, though blood pressure in parturients with preeclampsia are apparently higher than healthy parturients, placental hypoperfusion is more common. Spinal anesthesia is still the preferred mode of anesthesia in parturients with preeclampsia for cesarean section. In preeclampsia parturients, spinal anesthesia improve intervillous blood flow (provided that hypotension is avoided) which contribute to increase placental perfusion. Even so, 17-26% parturients with preeclampsia experienced postspinal anesthesia hypotension due to the extensive sympathetic block that occurred with spinal anesthesia. As a potential substitute drug for phenylephrine and ephedrine, norepinephrine has gained traction for use in parturients undergoing cesarean section. But the suitable infusion dose of norepinephrine in parturients with preeclampsia is still unknown. The purpose of this study is to investigate the suitable infusion dose of norepinephrine for prophylaxis against post-spinal anesthesia hypotension in parturients with preeclampsia undergoing cesarean section.

Conditions

• Adverse Effect

Interventions

Type	Name	Description
DRUG	Normal saline	Normal saline infusion simultaneous with subarachnoid block
DRUG	Norepinephrine	Different infusion dose of norepinephrine simultaneous with subarachnoid block

Timeline

• Start date: 2021-11-16
• Primary completion: 2023-06-06
• Completion: 2023-06-06
• First posted: 2020-09-21
• Last updated: 2023-06-13

Locations

1 site across 1 country: China