Which of these statements best describes the purpose of a Venturi mask?
A) The device is used to deliver positive pressure ventilation
B) It allows a 100% concentration of oxygen to be delivered without a leak between the patient's face and mask
C) Precise concentrations of oxygen can be delivered with this device
D) It provides a seal over the larynx, preventing aspiration during positive pressure ventilation
C) Precise concentrations of oxygen can be delivered with this device
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Sneeze droplets that attach to dust particles may remain in the air for up to:
A) 48 hours. B) seven days. C) one year. D) several weeks.
The most important safety rule to follow in a mycology laboratory is to
A) use screw-top tubes. B) not eat or drink in the laboratory. C) prevent the aerosolization of the conidia of moulds. D) disinfect benchtops daily.