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Assessment of Maternal Vascular Remodeling During Pregnancy in the Mouse Uterus
Published on: December 5, 2015
Haematological changes from conception to childbirth: An indicator of major pregnancy complications
Marion Patxot1,2, Miloš Stojanov3, Sven Erik Ojavee1,2
1Department of Computational Biology, University of Lausanne, Lausanne, Switzerland.
Insights
Maternal hematological changes, like hemoglobin decrease, can predict pregnancy complications such as hypertension. Identifying these patterns aids in early diagnosis and improved maternal care strategies.
Area of Science:
- Obstetrics and Gynecology
- Hematology
- Maternal Health
Background:
- Pregnancy complications cause approximately 800 global maternal deaths daily.
- Key complications include excessive blood loss, infections, and high blood pressure.
- Improved screening for high-risk pregnancies is crucial.
Purpose of the Study:
- To identify patterns of maternal hematological changes linked to future pregnancy complications.
- To enhance screening for high-risk pregnancies.
Main Methods:
- Utilized mixed effects models to analyze 14 complete blood count (CBC) parameters.
- Established reference ranges for CBC parameters in 1710 healthy pregnancies.
- Compared CBC data from healthy pregnancies with those experiencing pregnancy-induced hypertension, gestational diabetes, and postpartum hemorrhage.
Main Results:
- Demonstrated interindividual variations but good individual repeatability in CBC values during physiological pregnancies.
- Identified specific hematological alterations in women with obstetric complications.
- Observed a significantly more pronounced decrease in hemoglobin levels in women who developed pregnancy-induced hypertension compared to uncomplicated pregnancies.
- Confirmed that obstetric complications and white blood cell counts predict earlier delivery.
Conclusions:
- Provided a comprehensive description of hematological changes associated with major obstetric complications.
- The findings support strategies for the prevention and early diagnosis of pregnancy complications.
- The study contributes to improving maternal care through better risk identification.
Background:
About 800 women die every day worldwide from pregnancy-related complications, including excessive blood loss, infections and high-blood pressure (World Health Organization, 2019). To improve screening for high-risk pregnancies, we set out to identify patterns of maternal hematological changes associated with future pregnancy complications.
Methods:
Using mixed effects models, we established changes in 14 complete blood count (CBC) parameters for 1710 healthy pregnancies and compared them to measurements from 98 pregnancy-induced hypertension, 106 gestational diabetes and 339 postpartum hemorrhage cases.
Results:
Results show interindividual variations, but good individual repeatability in CBC values during physiological pregnancies, allowing the identification of specific alterations in women with obstetric complications. For example, in women with uncomplicated pregnancies, haemoglobin count decreases of 0.12 g/L (95% CI -0.16, -0.09) significantly per gestation week (p value <.001). Interestingly, this decrease is three times more pronounced in women who will develop pregnancy-induced hypertension, with an additional decrease of 0.39 g/L (95% CI -0.51, -0.26). We also confirm that obstetric complications and white CBC predict the likelihood of giving birth earlier during pregnancy.
Conclusion:
We provide a comprehensive description of the associations between haematological changes through pregnancy and three major obstetric complications to support strategies for prevention, early-diagnosis and maternal care.
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