Cortisol response in acute foetal distress

Area of Science:

• Neonatal physiology and endocrinology
• Perinatal medicine
• Fetal distress research

Background:

• Acute intrapartum distress is a critical condition affecting neonates.
• Cortisol is a key stress hormone, and its role in neonatal adaptation is crucial.
• Understanding cortisol's response to fetal distress can inform clinical management.

Purpose of the Study:

• To investigate cortisol levels in neonates experiencing acute intrapartum distress compared to controls.
• To examine the correlation between cord blood pH, maternal cortisol, and neonatal cortisol.
• To determine if acute fetal distress elicits a significant cortisol response in newborns.

Main Methods:

• Radioimmunoassay was used to estimate cortisol levels in maternal and cord blood (artery and vein) and neonatal peripheral blood.
• Neonates were categorized into study (acute intrapartum distress) and control groups.
• Cord blood pH and base deficit were measured to assess neonatal status.

Main Results:

• No significant difference in cortisol levels was found between neonates with and without fetal distress.
• A significant positive correlation was observed between cord arterial cortisol and maternal cortisol levels.
• No significant correlation was found between cord blood pH and cord arterial cortisol levels.

Conclusions:

• Acute intrapartum fetal distress did not appear to trigger a measurable increase in neonatal cortisol levels in this study.
• Maternal cortisol levels may influence neonatal cortisol levels at birth.
• Further research is needed to fully elucidate the role of cortisol in neonatal adaptation to stress.