The purpose of a mask is to filter droplets containing microorganisms expelled from the mouth. What is another purpose for the mask?
a. It's a good idea to wear two masks for better protection.
b. Many masks filter about 99% of particulate matter larger than 5 mm.
c. Masks are still effective if they become moist.
d. Reusable cotton masks are still appropriate.
ANS: B
Many masks filter about 99% of particulate matter larger than 5 mm but only about 45% to 60% of particles 0.3 mm in diameter. Special masks for aerosolized particles such as laser or TB are fitted for each employee. Wearing double masks forms a barrier instead of filter and may cause expulsion of particles to escape from the cheek folds.
You might also like to view...
What is the BEST way to gain a parents' confidence?
a. show your competence and compassion while managing their child b. tell them that everything is going to be OK and rush the child to the squad c. use adult-sized equipment on their child and explain that it will work better d. speak in a way that is firm and direct in order to minimize their panic
Which of the following is a special consideration when administering ACE inhibitors?
Hypercalcemia Cataract Hyperkalemia Hypertension
Jamie Jones does not have access to the computer but wants to look up some information about her next-door neighbor, so Sally writes her password down and gives it to her to use when she needs to. What rule is being breached?
A. Security B. Confidentiality C. Privacy D. Integrity
What do personnel modifiers explain?
A. They explain special circumstances relating to the health care professionals involved in the treatment of the patient. B. They indicate that a service or procedure was not performed in total. C. They are an indicator of the level of complexity of services required to treat that patient. D. They indicate a service or procedure was performed by more than one physician.