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Spinal level of fetal myelomeningocele: does it influence ventricular size?
C J Babcook1, C M Drake, R B Goldstein
1Department of Diagnostic Radiology, University of California, Davis Medical Center, Sacramento 95817, USA.
Insights
The level of spinal defects in fetuses with myelomeningocele does not impact ventricular size or posterior fossa deformity. This finding is crucial for understanding fetal development and potential interventions.
Area of Science:
- Fetal Medicine
- Neurology
- Developmental Biology
Background:
- Myelomeningocele is a severe birth defect affecting the spinal cord.
- Ventricular size and posterior fossa deformity are common concerns in affected fetuses.
Purpose of the Study:
- To investigate the relationship between the spinal defect level and ventricular size in fetuses with myelomeningocele.
- To determine if spinal defect level correlates with the severity of posterior fossa deformity.
Main Methods:
- Retrospective review of 51 fetal sonograms with open spina bifida.
- Categorization of spinal defects into sacral, low lumbar, high lumbar, and thoracic levels.
- Statistical analysis using regression models and Fisher's exact test.
Main Results:
- Spinal defect level did not significantly influence ventricular atrial diameter (p > .1).
- No significant relationship was found between spinal defect level and posterior fossa deformity severity (p > .8).
Conclusions:
- The level of the spinal defect does not independently affect ventriculomegaly in fetuses with myelomeningocele.
- Spinal defect level is not a predictor of posterior fossa deformity severity.
Objective:
Our objective was to determine whether the level of the spinal defect influences ventricular size in fetuses with myelomeningoceles.
Materials And Methods:
Sonograms of 51 fetuses with open spina bifida were reviewed to determine the gestational age, ventricular atrial diameter, severity of posterior fossa deformity, and the level of the spinal defect. Four categories for spinal defect level were used: sacral, low lumbar, high lumbar, and thoracic. Regression models for ventricular atrial diameter were fit, adjusting for gestational age, posterior fossa deformity, and spinal defect level. A Fisher's exact test was used to investigate a relationship between the level of the spinal defect and the severity of the posterior fossa deformity.
Results:
Spinal defect level was distributed among the four categories as follows: sacral (n = 7), low lumbar (n = 30), high lumbar (n = 10), and thoracic (n = 4). The level of the spinal defect did not significantly affect ventricular size (p > .1), and the level of the spinal defect did not show any relationship to the severity of the posterior fossa deformity (p > .8).
Conclusion:
The level of the spinal defect does not independently affect the degree of ventriculomegaly or severity of the posterior fossa deformity in fetuses with myelomeningoceles.