Computerized transverse axial tomography in the newborn

Pathology of perinatal brain damage: background and oxidative stress markers

PURPOSE

To review historical scientific background and new perspective on the pathology of perinatal brain damage. The relationship between birth asphyxia and subsequent cerebral palsy has been extensively investigated. The role of new and promising clinical markers of oxidative stress (OS) is presented.

METHODS

Electronic search of PubMed-Medline/EMBASE database has been performed. Laboratory and clinical data involving case series from the research group are reported.

RESULTS

The neuropathology of birth asphyxia and subsequent perinatal brain damage as well as the role of electronic fetal monitoring are reported following a review of the medical literature.

CONCLUSIONS

This review focuses on OS mechanisms underlying the neonatal brain damage and provides different perspective on the most reliable OS markers during the perinatal period. In particular, prior research work on neurodevelopmental diseases, such as Rett syndrome, suggests the measurement of oxidized fatty acid molecules (i.e., F4-Neuroprostanes and F2-Dihomo-Isoprostanes) closely related to brain white and gray matter oxidative damage.

Intrapartum fetal heart rate monitoring in cases of congenital heart disease

OBJECTIVE

We evaluated the intrapartum fetal heart rate (FHR) patterns in fetuses with congenital heart disease (CHD).

STUDY DESIGN

One hundred sixteen cases of fetal CHD were identified at our institute between 2000-2007; 464 fetuses without CHD were used as controls. The incidences of abnormal FHR patterns and umbilical blood gases were compared.

RESULTS

More fetuses with CHD showed variant FHR than did control fetuses (46.6% vs 17.7%; P < .01). Cesarean section deliveries that were based on fetal indications were performed more frequently in fetuses with CHD than in control fetuses (12.9% vs 3.2%; P < .01). Isomerism and tetralogy of Fallot were observed frequently with variant FHR. When chromosomal abnormalities and intrauterine growth restriction were excluded, the fetuses with CHD showed more variant FHR than did the control fetuses.

CONCLUSION

Fetuses with CHD are more likely to show abnormal FHR patterns than are control fetuses. We suggest that cardiac abnormalities are associated with abnormalities in FHR patterns.

Quality of obstetric care and occurrence of fetal asphyxia and cerebral palsy. Is there a relationship?

Whether a relationship exists between the quality of obstetric care and poor fetal outcome, notably cerebral palsy, remains uncertain. We herein report a study which suggests that substandard obstetric care bears little relationship to the etiology of cerebral palsy. In none of our 34 cases of cerebral palsy was there any recognized delay on the physician's part in reacting to evidence of fetal asphyxia.

Adverse outcome of pregnancy and the quality of obstetric care

The case-control method was used to study the relation between four possibly preventable adverse outcomes of pregnancy and suboptimal antepartum and intrapartum obstetric care defined by clinical consensus. Fetuses whose deaths were ascribed to asphyxia or trauma, and babies born at term who had seizures within 48 h of delivery, were significantly more likely than controls to have received suboptimal care during pregnancy. Babies with seizures, as well as those with terminal apnoea, were also substantially more likely than controls to have been born after a failure to react appropriately to signs of severe fetal distress during labour. Most of the babies who received suboptimal obstetric care, however, did not have any of these adverse outcomes. In addition, most babies with these adverse outcomes had apparently received satisfactory obstetric care. No relation was detected between cerebral palsy and suboptimal obstetric care.