Risk Factors Associated with Cesarean Delivery on Maternal Request in a High-Risk Maternity Hospital: A Case Control Study

Every year, millions of women around the world give birth, and for many, the path to delivery is a choice between two distinct routes: a natural birth through the vagina or a surgical procedure known as a cesarean section. While the surgical method was once reserved strictly for situations where the mother or baby faced immediate danger, its use has grown steadily over recent decades. This rise has sparked concern among global health organizations, which note that the increase in surgeries does not necessarily lead to better health outcomes for mothers or children. In fact, unnecessary surgery can introduce new risks, from infections to complications in future pregnancies. A specific and growing phenomenon within this trend is the "cesarean delivery on maternal request," where a woman asks for the surgery without a medical reason forcing her hand. Understanding why women make this choice, especially in hospitals that specialize in high-risk pregnancies, is crucial for doctors trying to balance a mother's autonomy with the goal of keeping birth as safe and natural as possible.

Researchers in Brazil set out to uncover the specific factors that drive women to request this surgery. They focused their investigation on a public hospital in the southeast of the country that serves as a referral center for complicated pregnancies. The team looked back at electronic medical records from October 2017 to October 2021, comparing women who requested a cesarean section against women who had a vaginal delivery. To ensure a fair comparison, they matched each woman who requested surgery with the woman who had a vaginal delivery closest to her in time at the same hospital. The study included women who had never had a cesarean before as well as those who had one in the past, but it excluded women who had already undergone two or more cesarean sections, as local protocols advise against vaginal birth for them. The researchers examined a wide range of personal details, including age, education, skin color, marital status, whether a partner was present during labor, and whether the woman had any existing health conditions like diabetes or high blood pressure.

The analysis revealed two powerful drivers behind the decision to request a cesarean section. The most significant factor was the presence of comorbidities, which refers to pre-existing health conditions or complications arising during pregnancy. Women with these conditions were vastly more likely to ask for the surgery than those without them. The data showed that having a comorbidity increased the odds of requesting a cesarean by a factor of twelve. This effect held true whether the woman requested the surgery before labor began or asked for it after labor induction had already started and she decided to stop. The second major factor was a history of a previous cesarean delivery. Women who had undergone the surgery before were seven times more likely to request it again compared to women who had never had one. These two factors stood out clearly even when the researchers adjusted for other variables, suggesting that the physical reality of a woman's health history heavily influences her choice.

Interestingly, the study found that many common assumptions about who requests these surgeries did not hold up in this specific group. While age played a role in the initial, unadjusted look at the data, it lost its significance once the researchers accounted for health conditions and previous surgeries. Similarly, factors such as skin color, marital status, and whether a partner was present in the room did not show a strong, independent link to the decision to request a cesarean. The researchers noted that while having a partner present was linked to the request in some initial checks, this connection disappeared when other factors were considered. This suggests that in a high-risk hospital setting, the decision is less about social demographics and more deeply rooted in the medical history and the woman's perception of safety regarding her specific health challenges.

The findings paint a picture of a complex decision-making process where medical history often overrides other considerations. The researchers observed that even when health conditions were well-controlled and did not strictly require surgery, their mere presence seemed to push women toward requesting a cesarean. This may stem from a desire to feel in control or a belief that surgery is the safer option, even when doctors have explained that vaginal birth is a viable path. The study highlights that in populations where women face higher medical risks, the conversation about birth needs to be particularly careful. Doctors must provide clear, evidence-based counseling to help women understand the real risks and benefits of each option, ensuring that the choice to undergo surgery is informed rather than driven by fear or misunderstanding. Ultimately, the study suggests that preventing the first cesarean section and managing maternal health conditions effectively are key steps in aligning a woman's preferences with the safest possible mode of delivery.