Related Experiment Videos
Connatal (fetal) hydrocephalus: an acquired pathology?
R Guiffrè1, F S Pastore, S De Santis
1Institute of Neurosurgery, University of Rome, Tor Vergata, Italy.
Summary
Investigating the causes of fetal hydrocephalus reveals that while rare, inherited and dysraphic malformations are not the primary drivers. Viral infections and intraventricular hemorrhages during pregnancy are potential factors, supported by experimental data.
Area of Science:
- Medical Science
- Developmental Biology
- Neurology
Background:
- Congenital hydrocephalus, or hydrocephalus present at birth, has poorly understood causes.
- While inherited and dysraphic malformations are rare, other factors like maternal infections and fetal hemorrhages are investigated.
- Existing evidence for these factors is largely based on anatomical and experimental findings rather than extensive clinical data.
Purpose of the Study:
- To explore the various potential etiologies of fetal hydrocephalus.
- To evaluate the evidence supporting proposed causes such as viral infections, intraventricular hemorrhages, and exposure to toxins or drugs during pregnancy.
- To highlight areas for future research in understanding the development of congenital hydrocephalus.
Main Methods:
- Review of existing literature on the etiology of fetal hydrocephalus.
- Analysis of anatomical, physiopathological, experimental, and epidemiological data.
- Consideration of both direct fetal factors and maternal exposures during pregnancy.
Main Results:
- Inherited and dysraphic malformations are very rare causes of fetal hydrocephalus.
- Intraventricular hemorrhages and viral infections during pregnancy are proposed etiologies, with stronger support from experimental than clinical evidence.
- Experimental studies suggest toxins and drugs administered during pregnancy may also contribute to hydrocephalus, with effects potentially varying based on the stage of embryonic development.
Conclusions:
- The etiology of fetal hydrocephalus is multifactorial, with viral infections, intraventricular hemorrhages, and prenatal exposure to toxins/drugs being significant areas of investigation.
- Further research is needed to clarify the clinical evidence for these factors and to explore the roles of various cerebrospinal fluid pathway structures.
- The timing of exposure to teratogenic agents during pregnancy may influence the severity of resulting malformations, including hydrocephalus.