Intrapartum fetal assessment. A review.

Area of Science:

• Obstetrics and Gynecology
• Fetal Medicine
• Neonatal Neurology

Background:

• Clinical assessment of intrapartum fetal-heart-rate (FHR) monitoring is challenged by inconsistent interpretation of FHR patterns.
• Lack of standardized FHR interpretation leads to varied responses to perceived fetal heart rate abnormalities.

Purpose of the Study:

• To review the physiology and pathophysiology of FHR changes.
• To highlight the new National Institute of Child Health and Human Development (NICHD) guidelines for unambiguous FHR pattern definition.
• To emphasize fetal stress avoidance and appropriate management of fetal distress.

Main Methods:

• Review of current literature on FHR monitoring, physiology, and pathophysiology.
• Emphasis on the application of new NICHD guidelines for FHR pattern interpretation.
• Discussion of management strategies for fetal distress, including medical intervention and expedited delivery.
• Description of emerging tools for assessing the timing of perinatal brain injury.

Main Results:

• Standardized interpretation of FHR patterns using NICHD guidelines can reduce ambiguity.
• Timely and appropriate interventions can successfully reverse abnormal FHR patterns.
• Expedient delivery is crucial if interventions fail to resolve fetal distress.

Conclusions:

• Adoption of uniform FHR interpretation guidelines is essential for accurate clinical assessment.
• Effective management of fetal distress involves avoiding stressors and implementing timely interventions.
• New tools offer improved methods for determining the timing of perinatal brain injury.