Which of the following measure is typically increased in patients ...

[bio_gurl]

Which of the following measure is typically increased in patients with restrictive lung disease?
 
  a. Lung compliance
  b. Lung volumes
  c. Pressure needed to expand the lung
  d. Airway resistance

Question 2

What do relative contraindications for lung volume determinations include? 1. Recent cataract removal surgery 2. Unstable cardiovascular status 3. Treated pneumothorax 4. Hemoptysis of unknown origin
 
  a. 1, 2, and 3 only
  b. 2 and 4 only
  c. 3 and 4 only
  d. 1, 2, and 4 only

[juiceman1987]

Answer to Question 1

ANS: C
The primary problem in restrictive lung disease is reduced lung compliance, thoracic compliance, or both lung and thoracic compliances. Compliance is the volume of gas inspired per the amount of inspiratory effort; effort is measured as the amount of pressure created in the lung or in the pleural space when the inspiratory muscles contract. Compliance is calculated according to the following formula: C = V/P.

Answer to Question 2

ANS: D
Patients with acute, unstable cardiopulmonary problems such as hemoptysis, pneumothorax, my-ocardial infarction, and pulmonary embolism and patients with acute chest or abdominal pain should not be tested. Testing could be harmful, if needed treatment would be delayed. Patients who have nausea and who are vomiting should not be tested; there is a risk of aspiration. Testing for patients who have had recent cataract removal surgery should be delayed; changes in ocular pressure may be harmful to the eye.