Effect of electrode size on the contributions of intracranial and extracranial blood flow to the cerebral electrical impedance plethysmogram.
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Biomedical subjects
Publications and source records attributed to A M Weindling.
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A high incidence of group B streptococcal disease of the newborn in West Berkshire led to a prospective study of the condition. Cultures taken from 1090 babies shortly after birth showed that 65 (6%) were colonised with the streptococcus. Thirty of these babies were assigned to group 1. Bacteriological samples were taken from babies and mothers at birth and at four, eight, and 12 weeks, and also from fathers and siblings. Fifty uncolonised babies and their families were similarly studied and served as controls (group 2). In group 1,28 of the 30 mothers and 14 of the 28 fathers examined were colonised by group B streptococci. In group 2 the streptococci were isolated from three babies, 12 mothers, and 11 out of 45 fathers during follow-up. These findings suggest that group B streptococci are carried predominantly in the lower gastrointestinal and genitourinary tracts. Most families are lightly colonised, but in others maternal colonisation is stable and heavy and the incidence of paternal colonisation high. Results of serotyping suggest that sexual transmission occurs, which may explain the difficulty in eradicating the organism during pregnancy.
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This study reports the results of an examination of the stools of 58 infants with gastroenteritis who were seen as outpatients. The stools were examined by routine bacterial culture, and by electron microscopy for virus particles. The stools of a comparable control group of infants who had no gastrointestinal symptoms were also similarly examined. Enteropathogenic Escherichia coli, Salmonella sp., and rotaviruses, as well as other viruses, particularly adenoviruses and coronaviruses, were isolated.
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Internalization of a pleuroamniotic shunt previously has not been associated with significant fetal or neonatal problems. We report a case in whom the shunt internalized and compressed the lung hilum. A review of the complications of antenatal pleuroamniotic shunting is also presented.