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Results for “Polyvinyl Chloride”

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At least 325 records · Page 18Linked to original sources
PubMed1989

Electron microscopic evaluation of bacterial adherence to polyvinyl chloride endotracheal tubes used in neonates.

Studies in adults suggest a possible association between pulmonary nosocomial infection and bacterial adherence to endotracheal tubes (ETT). Some strains of coagulase-negative Staphylococcus produce a mucoid extracellular material known as slime or glycocalyx that helps bacteria adhere to the surface of biomaterials. We examined by scanning and transmission electron microscope the surface of 29 polyvinyl ETT removed from neonatal patients, and ten unused ETT. Multiple surface irregularities were found in the unused tubes. These irregularities were most prominent in the tip and around the side hole. Amorphous material containing slime-producing bacteria was found on 29 ETT removed from patients. Tubes in place for longer times had greater areas of surface covered; the amorphous material was more concentrated in the areas where surface irregularities were most prominent. No clinical correlation with pulmonary nosocomial infection was established.

Bacteria↗
PubMedDate not supplied

Central nervous system malformations in relation to two polyvinyl chloride production facilities.

A modified case-control study was conducted for selected birth defects that occurred among residents who lived in areas that surrounded two vinyl chloride polymerization facilities in New Jersey. Odds ratios for central nervous system defects (ICD 9, 740-742) decreased as the distance the mothers' residences were located from the facilities increased. Higher odds ratios for central nervous system birth defects were found in the areas around the plant that had higher vinyl chloride emissions. None of the odds ratios, however, were statistically significant. The differences in concentrations of emissions from the different plants may contribute to the discrepancies reported in previous studies wherein the risk of environmental exposure to vinyl chloride was assessed.

Air Pollutants↗