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Norepinephrine Prophylaxis for Postspinal Anesthesia Hypotension in Parturients With Preeclampsia.

Adverse Effect Clinical Trial

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

Clinical Trial 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.

Clinical Trial 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. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04556370
Study type Interventional
Source General Hospital of Ningxia Medical University
Contact
Status Completed
Phase N/A
Start date November 16, 2021
Completion date June 6, 2023
View Details
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