A patient with carbon monoxide poisoning has a COHb level of 20. ...

[TFauchery]

A patient with carbon monoxide poisoning has a COHb level of 20. If the patient is given 100 oxygen, what will the approximate COHb level be in 1 hour?
 
  a. 15
  b. 10
  c. 5
  d. 2.5

Question 2

A 28-year-old patient who has dogs, parakeets, and cats as pets has been admitted with pneumonia. It is suspected that she acquired the infection from one of her pets. What organism is likely to be found in her sputum?
 
  a. Bacteroides melaninogenicus
  b. Staphylococcus aureus
  c. Chlamydia psittaci
  d. Haemophilus influenzae

[snackralk]

Answer to Question 1

B
Breathing 100 oxygen at one atmosphere pressure will reduce the COHb by half in l hour. A 20 COHb level will be reduced to about 10 after 1 hour of breathing FIO2 1.0.

Answer to Question 2

C
C. psittaci bacteria are found in the feces of parakeets and other birds. When parakeet feces are dried, aerosolized, and inhaled, pneumonia can result. Although the other organisms can cause pneumonia, they are not associated with household pets.