A mechanically ventilated patient with chronic obstructive ...

[abarnes]

A mechanically ventilated patient with chronic obstructive pulmonary disease is in the process of being weaned from mechanical ventilation. A diet containing which of the following will be most beneficial to this process?
 
  a. High protein, low fats, and carbohydrates
  b. Low fats and proteins, high carbohydrates
  c. Low carbohydrate with increased fats and proteins
  d. Equal amounts of carbohydrates, fats, and proteins

Question 2

A patient whose carbon dioxide (CO2) production is 390 mL/min and oxygen (O2) consumption is 375 mL/min is most likely experiencing which of the following?
 
  a. Ketosis
  b. Severe sepsis
  c. Hyperventilation
  d. Too much carbohydrate intake

[tennis14576]

Answer to Question 1

ANS: C
Diets with a high percentage of carbohydrates will raise the amount of carbon dioxide (CO2) a patient produces. This will overburden a patient with limited ventilatory reserves, as with chronic obstructive pulmonary disease (COPD). The added CO2 is greater than the patient's ventilatory capacity, and when attempting to maintain spontaneous breathing the patient will fail to wean.

Answer to Question 2

ANS: C
The respiratory quotient (RQ) is the ratio of carbon dioxide (CO2) production to oxygen (O2) consumption. This patient has an RQ (390/375) of 1.04. Ketosis causes the RQ to be less than 0.7. Severe sepsis is associated with RQ levels of approximately 0.7. Hyperventilation is associ-ated with RQ levels greater than 1.0. Pure carbohydrate RQ is 1.0.

[abarnes]

Correct answers!

[tennis14576]

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