Key result
Preterm or twin deliveries do not significantly affect the neonatal concentrations or placental transfer rates of etomidate, remifentanil, and rocuronium bromide used in general anesthesia for cesarean sections compared to term singletons.
Why the study?
This study aimed to determine the drug concentrations of etomidate, remifentanil, and rocuronium bromide in fetuses and placental transport rates between term and preterm delivery, twins, and singletons.
Does preterm or twin delivery affect the neonatal concentration and placental transfer of etomidate, remifentanil, and rocuronium bromide during general anesthesia for cesarean section?
Observational (n=60)
No
Does preterm or twin delivery affect the neonatal concentration and placental transfer of etomidate, remifentanil, and rocuronium bromide during general anesthesia for cesarean section?
Preterm or twin deliveries do not significantly alter the fetal exposure or placental transfer of etomidate, remifentanil, and rocuronium bromide during general anesthesia for cesarean sections.
Supports equivalent anesthetic regimens in preterm/twin cesareans; extends pharmacokinetic data to these populations.
Objective: This study aims to determine the drug concentration of etomidate, remifentanil, and rocuronium bromide for general anesthesia in fetus as well as the placental transport rate between term and preterm delivery, twins, and singleton. Study design: Sixty parturients with 72 fetuses undergoing cesarean section under general anesthesia were included. According to whether the fetus was a twin or premature, parturients were divided into Group I (term singleton), Group II (premature singleton), Group III (term twins), and Group IV (premature twins). The preoperative demographic characteristics and laboratory examination of parturients, hemodynamic indicators, the Apgar score of neonates at 1, 5, and 10 min after delivery and at specific assigned values, umbilical artery blood gas analysis results, neonatal weight, and resuscitative measures were recorded. Anesthetic drug concentrations in maternal arterial (MA), umbilical arterial (UA), and umbilical venous (UV) blood were detected by Ultra Performance Liquid Chromatography Tandem Mass Spectrometry (UPLC-MS/MS). Result: No significant differences were observed in the concentrations of etomidate, remifentanil, and rocuronium bromide in MA, UV, and UA blood, or in the UV/MA and UA/UV ratios between term and preterm infants, twins, and singletons. Moreover, there was no variation in the anesthetic drug concentration among each pair of twins. Additionally, no correlation was found between the neonatal weight and the plasma concentrations of anesthetic drugs in UV and UA blood, except for remifentanil in UA blood. Conclusion: Preterm or twin deliveries do not affect the neonatal concentration of etomidate, remifentanil, and rocuronium bromide used in general anesthesia for cesarean sections. Clinical Trial Registration: www.chictr.org.cn , identifier ChiCTR2100046547
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Liu et al. (2023) conducted an observational in Cesarean section under general anesthesia (n=60). Preterm or twin delivery vs. Term singleton delivery was evaluated on Concentrations of etomidate, remifentanil, and rocuronium bromide in maternal arterial, umbilical venous, and umbilical arterial blood, and placental transfer rates (p=>0.05). Preterm or twin deliveries do not significantly affect the neonatal concentrations or placental transfer rates of etomidate, remifentanil, and rocuronium bromide used in general anesthesia for cesarean sections compared to term singletons.
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