______ law states that the degree to which a gas enters into a ...

[go.lag]

______ law states that the degree to which a gas enters into a physical solution in body fluids is directly proportional to the partial pressure of gas to which the fluid is exposed?
 
  a. Dalton's c. Gay-Lussac's
  b. Henry's d. Boyle's

Question 2

A 60-year-old man with a 90 pack-years smoking history arrives in the emergency department on a nonrebreathing mask with an SpO2 of 88.
 
  The arterial blood gas results at this time indicate a pH of 7.38, PCO2 of 58, and partial pressure of oxygen (PO2) of 54. Which action should the respiratory therapist take at this time?
  a. Keep the nonrebreathing mask on the pa-tient.
  b. Administer an 80:20 heliox concentration.
  c. Place a nasal cannula set at 6 L/min.
  d. Place an air-entrainment mask on the pa-tient that delivers 0.40 FIO2.

[bigcheese9]

Answer to Question 1

ANS: B
Henry's law is used to explain the changes in the PaO2 that occur with exposure to elevated am-bient pressure. The law states that the degree to which a gas enters into physical solution in body fluids is directly proportional to the partial pressure of gas to which the fluid is exposed.

Answer to Question 2

ANS: D
An air-entrainment device is the best delivery device for a patient with chronic obstructive pul-monary disease because of its ability to provide a precise FIO2. The other choices have a greater likelihood of causing CO2 retention and knocking out the patient's hypoxic drive.

[go.lag]

TY

[bigcheese9]

Happy to Help