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Thin foil body-shield resuscitation barrier device to protect from blood: an experimental study
Summary
Researchers experimentally investigated the run-off behavior of blood drops on four polymer foil surfaces -- polyvinyl chloride, polyethylene, polyethylene terephthalate, and aluminum-coated PET -- intended for use as thin body-shield resuscitation barriers to protect rescuers from pathogen exposure. They found that surface hydrophobicity and roughness strongly influenced blood droplet spreading and run-off characteristics, with implications for selecting foil materials that minimize cross-contamination risk during resuscitation.
In times of collective concern about pandemics, body-shield resuscitation barrier devices are more and more considered to protect against transmission of different pathogens between rescuers and patients. The objective of this experimental study was to investigate the characteristics of blood drops dispersed on the surface of four different foils suitable for blanketing patients during resuscitation. We analyzed run-off characteristics of blood stains depending on surface properties of polyvinyl chloride, polyethylene, polyethylene terephthalate and aluminum-coated polyethylene terephthalate. Confocal fluorescence microscopy revealed less cellular density and lack of fibrin networks in blood stains on the four foil surfaces than on paper towel. Delayed clotting went along with larger areas of contamination indicating a greater likelihood of coming into contact with potential germs but a smaller chance of contracting an infection. Space blankets as obligatory components of first aid kits are readily available for rescuers and serve as a mechanical barrier between rescuers and patients during resuscitation.
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