Update on intrapartum fetal pulse oximetry

Area of Science:

• Obstetrics and Gynecology
• Fetal Monitoring
• Perinatal Medicine

Background:

• Intrapartum assessment of fetal wellbeing is crucial for optimizing birth outcomes.
• Conventional fetal monitoring methods have limitations in certain clinical scenarios.
• Fetal pulse oximetry (FPO) has emerged as a potential adjunct for intrapartum fetal assessment.

Purpose of the Study:

• To evaluate the current status and clinical utility of fetal pulse oximetry (FPO) during labor.
• To assess the accuracy and safety of FPO in determining intrapartum fetal oxygenation.
• To review the impact of FPO on obstetric intervention rates and maternal satisfaction.

Main Methods:

• Review of current literature and clinical guidelines on FPO.
• Analysis of data from randomized controlled trials (RCTs) comparing FPO with conventional monitoring.
• Discussion of the practical application and interpretation of FPO values (FSpO2).

Main Results:

• Fetal pulse oximetry (FPO) is a safe and accurate indicator of intrapartum fetal oxygenation.
• A randomized controlled trial validated FPO's use in reducing cesarean section rates for non-reassuring fetal status.
• High maternal satisfaction rates have been reported with FPO use.
• Fetal oxygen saturation (FSpO2) values below 30% indicate a need for prompt obstetric intervention.

Conclusions:

• Fetal pulse oximetry (FPO) is a valuable tool for intrapartum fetal assessment, particularly when electronic fetal heart rate traces are non-reassuring or conventional monitoring is unreliable.
• FPO should be used as part of a comprehensive clinical assessment, not as the sole basis for decision-making.
• Ongoing research, including multicenter RCTs, will further define the role of FPO in improving perinatal outcomes.