National impact of Score MAMA on obstetric complications in Ecuador, 2012-2024: interrupted time series analysis
This interrupted time series analysis of Ecuador's national Score MAMA system (2012–2024) reveals that its implementation was associated with a selective increase in recorded hypertensive complications, suggesting improved detection of preeclampsia-eclampsia rather than a true rise in incidence or a reduction in hemorrhage, sepsis, or maternal mortality.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of a preprint that has not been peer-reviewed. It is not medical advice. Do not make health decisions based on this content. Read full disclaimer
Every pregnancy carries a risk, but for decades, the most dangerous threats to a mother's life have been predictable: severe bleeding, infection, and high blood pressure. In many parts of the world, these conditions remain the leading causes of maternal death, with high blood pressure disorders becoming increasingly common in Latin America. To combat this, health systems have begun using early-warning tools, similar to the monitors used in intensive care units, to spot signs of deterioration before a crisis occurs. These systems rely on simple, standardized checks—like measuring blood pressure or looking for fever—to trigger a rapid response from medical teams. The hope is that by catching these problems early, doctors can intervene before a complication becomes fatal. However, while these tools are widely recommended, there has been little large-scale proof that they actually save lives when rolled out across an entire country, or whether they simply change how doctors record what they see.
In Ecuador, the Ministry of Public Health introduced a national system called Score MAMÁ to address this gap. Launched first in a pilot phase in 2015 and then expanded to the whole country in 2016, the system organizes maternal care around three color-coded alerts: Blue for high blood pressure, Red for bleeding, and Yellow for infection. Each color comes with a specific set of instructions for medical staff on how to respond. To understand whether this massive change in how hospitals operate actually improved outcomes, researchers analyzed a decade of national health records, tracking millions of births and hospital discharges from 2012 through 2024. They looked for changes in the rates of these three specific complications before and after the system was introduced, asking a critical question: did the number of mothers getting sick actually change, or did the system just make it easier to find and record the cases that were already there?
The researchers found a striking difference between the three types of complications. After Score MAMÁ was implemented, the recorded rate of Blue Code cases—those involving high blood pressure disorders like preeclampsia—rose significantly. This increase happened both in the pilot zones and later across the entire nation, with the number of recorded cases jumping by roughly 20 to 27 percent. In contrast, the rates for Red Code cases (severe bleeding) and Yellow Code cases (infections) did not change at all. The data showed no significant shift in how often mothers were hospitalized for hemorrhage or sepsis, suggesting that the new system did not alter the frequency of these acute, life-threatening events. The authors explain that this pattern points to a specific reality: the system likely improved the detection of high blood pressure issues that might have been missed or under-reported in the past, rather than causing a sudden surge in new cases. Because bleeding and infection are usually so severe and obvious that they are hard to miss, a new screening tool would not be expected to change their recorded numbers in the same way.
Perhaps most importantly, the study looked at whether these changes in detection translated into fewer deaths. The researchers examined national mortality data for the same period, tracking hundreds of maternal deaths classified by the same three color codes. They found no statistically significant change in the number of deaths from high blood pressure, bleeding, or infection following the rollout of Score MAMÁ. While the number of recorded high blood pressure cases went up, the number of mothers dying from them did not go down in a measurable way. Similarly, the death rate for bleeding remained steady, even as the country's health officials noted that hemorrhage has recently overtaken high blood pressure as the leading direct cause of maternal death in Ecuador. The study suggests that while the system successfully made the healthcare system more aware of high blood pressure complications, this increased awareness has not yet resulted in a detectable reduction in mortality on a national scale.
This research highlights a complex truth about public health interventions: making a system better at finding problems does not automatically mean it has solved them. The rise in recorded Blue Code cases appears to be a sign of improved detection, a necessary first step that brings hidden cases into the light of medical care. However, the lack of change in mortality rates indicates that simply identifying the problem is not enough; the next challenge is ensuring that the treatment following that identification is effective enough to save lives. For the future, the authors note that while the system has succeeded in standardizing how these events are recognized, further work is needed to understand how to turn that better detection into better survival rates, particularly for the acute complications like bleeding that the system did not change.
Drowning in papers in your field?
Get daily digests of the most novel papers matching your research keywords — with technical summaries, in your language.