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Cesarean section and maternal age in low-risk nulliparas
L R Delgado1, F Nieto, A G Diaz
1Latin American Center of Perinatology and Human Development (CLAP), PAHO/WHO, Montevideo, Uruguay.
Summary
Older maternal age significantly increases cesarean section risk in low-risk first-time mothers. This study found a threefold higher risk for women aged 29-49, indicating a more aggressive obstetrical approach not explained by standard indications.
Area of Science:
- Obstetrics and Gynecology
- Perinatal Medicine
- Reproductive Health
Background:
- Maternal age is a known factor influencing pregnancy outcomes.
- Cesarean section rates are rising globally, particularly in developed nations.
- Understanding risk factors for cesarean section in low-risk populations is crucial for optimizing obstetric care.
Purpose of the Study:
- To analyze the association between maternal age and the likelihood of undergoing a cesarean section.
- To investigate this relationship specifically in low-risk nulliparous women (women having their first child).
- To determine if advanced maternal age independently predicts a higher cesarean section rate.
Main Methods:
- Retrospective analysis of 7454 perinatal clinical records.
- Data sourced from eleven Latin American institutions via a comprehensive perinatal information system.
- Inclusion criteria focused on low-risk nulliparous women.
Main Results:
- A significantly higher risk of cesarean section was observed in nulliparous women aged 29 to 49 years.
- The risk was approximately three times greater compared to younger pregnant women.
- This increased rate of cesarean delivery could not be attributed to the primary medical indications for the procedure.
Conclusions:
- Advanced maternal age is independently associated with an elevated risk of cesarean section in low-risk nulliparas.
- The observed trend suggests a potentially more interventionist approach in managing pregnancies with older first-time mothers.
- Further research is warranted to explore the underlying reasons for this 'aggressive obstetrical conduct'.