Operative cases where there is a potential for massive blood loss necessitates a system to rapidly warm and transfuse large volumes of blood over short periods of time. An in-house system in which both crystalloid solutions and blood products can be quickly added, warmed and available for infusion was developed to meet this need. The purpose of this study was to evaluate how blood products are ...

Platelet abnormalities that occur during cardiopulmonary bypass may be produced in vitro by recirculating 500 ml of human blood at 37°C in a silicone rubber circuit (0.9 m) containing a spiral coil membrane oxygenator. Platelet counts fall to 20% of initial levels, plasma levels of low affinity platelet factor 4 (LA-PF4) rise from 0 to 66% of that in control platelet rich plasma, and sensitivit...

Platelet abnormalities that occur during cardiopulmonary bypass may be produced in vitro by recirculating 500 ml of human blood at 37°C in a silicone rubber circuit (0.9 m) containing a spiral coil membrane oxygenator. Platelet counts fall to 20% of initial levels, plasma levels of low affinity platelet factor 4 (LA-PF4) rise from 0 to 66% of that in control platelet rich plasma, and sensitivit...

Current gas-and aerosol-based tracers do not adequately simulate the emission and transport of liquid aerosols containing a pathogen indoors. To evaluate aerosol tracer synthetic DNA, was emitted in chamber to measure changes decay rates as outdoor air dilution rate filter rating varied. DNA concentration were compared size distributions two gases (CO2 SF6) characterize evolution particle distr...

OBJECTIVE Cardiopulmonary bypass (CPB) induces neutrophil degranulation and superoxide anion production in vivo. We hypothesized that CPB-associated neutrophil dysregulation alters neutrophil adhesion to vascular endothelial cells and the extracellular matrix. METHODS We, therefore, recirculated neutrophils in polyvinyl chloride (PVC) tubing using a roller pump model and thereafter measured a...

An analysis of atmospheric gases and particles during periods of land and sea breezes in a coastal city in southwest Mexico indicates limited removal of total particle mass by deposition during periods when the air resides over the ocean. The average PM(2.5) mass concentrations for land and sea breeze samples were 25+/-1.0 and 26+/-1.0 microg m(-3), respectively. The average sum of the ion conc...

Experimental bioreactors operated as recirculated closed systems were inoculated with bacterial cultures that utilized methane, propane, and tryptone-yeast extract as aerobic carbon and energy sources and degraded trichloroethylene (TCE). Up to 95% removal of TCE was observed after 5 days of incubation. Uninoculated bioreactors inhibited with 0.5% Formalin and 0.2% sodium azide retained greater...