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Ultrasonographic bone velocity in pregnancy: a longitudinal study
F Aguado1, M Revilla, E R Hernández
1Radiodiagnostics Service, University Hospital, University of Alcalá de Henares, Madrid, Spain.
American Journal of Obstetrics and Gynecology
|June 3, 1998
Summary
Pregnancy reduces bone mass, as indicated by decreased ultrasonographic bone propagation velocity. This effect is more pronounced in pregnant women with insufficient calcium intake, highlighting the importance of calcium for bone health during gestation.
Area of Science:
- Obstetrics and Gynecology
- Bone Metabolism
- Prenatal Health
Background:
- Bone mass undergoes dynamic changes during pregnancy.
- Calcium intake is crucial for maternal and fetal skeletal health.
- Ultrasonography offers a non-invasive method to assess bone properties.
Purpose of the Study:
- To evaluate longitudinal changes in bone mass during pregnancy.
- To investigate the relationship between calcium intake and bone changes.
- To correlate ultrasonographic bone measurements with biochemical markers of bone remodeling.
Main Methods:
- Longitudinal study of 40 pregnant women at the University of Alcalá Hospital.
- Measurement of bone remodeling markers and ultrasonographic bone propagation velocity (UPV) in all trimesters.
- Statistical analysis including Wilcoxon, t-tests, and ANOVA.
Main Results:
- Ultrasonographic bone propagation velocity significantly decreased in the second and third trimesters of pregnancy.
- Levels of tartrate-resistant acid phosphatase and alkaline phosphatase increased significantly.
- The reduction in UPV was more pronounced in women with lower calcium intake.
Conclusions:
- Gestation is associated with a reduction in bone mass, evidenced by decreased UPV.
- Low calcium intake exacerbates the decrease in bone mass during pregnancy.
- Maintaining adequate calcium intake is vital for preserving bone health throughout gestation.