When can obstetric risk be predicted?

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Perinatal Care

Background:

• Peripartum obstetric risk factors (POR) identification is key for appropriate management.
• Predicting which women require enhanced obstetric and neonatal care is complex.
• Understanding the timing of risk factor appearance is crucial for timely intervention.

Purpose of the Study:

• To determine the optimal timing for assessing peripartum obstetric risk factors (POR).
• To evaluate the role of medical interventions in complications for initially low-risk women.
• To inform management strategies for pregnant women based on risk assessment.

Main Methods:

• Prospective cohort study of 1975 women across two maternity units.
• Categorization of women into risk groups (POR- and POR+) at three stages: late pregnancy, labor onset, and end of labor.
• Observation of medical interventions, fetal-maternal complications, and retrospective audit of management.

Main Results:

• 20% of women were identified as low-risk (POR-) at the end of labor.
• 16% of women initially assessed as low-risk at labor onset experienced a non-simple delivery.
• 35% of non-simple deliveries in low-risk women may have been preventable with better guideline adherence.

Conclusions:

• Predicting the need for additional obstetric resources is difficult.
• Risk assessment should occur at admission and be reassessed during labor.
• No woman is entirely risk-free; delivery in demedicalized units requires careful consideration.