What percentage of all cases of COPD is caused by ...

[NguyenJ]

What percentage of all cases of COPD is caused by alpha1-antitrypsin deficiency?
 
  a. 2 to 3
  b. 10 to 15
  c. 25 to 40
  d. 50 to 75

Question 2

What is the leading risk factor for the development of COPD?
 
  a. Air pollution
  b. Alpha1-antitrypsin deficiency
  c. Cigarette smoking
  d. Secondhand smoke

[rachel]

Answer to Question 1

ANS: A
Accounting for 2 to 3 of all cases of COPD, alpha1-antitrypsin deficiency is severely under-recognized by health care providers, but it affects an estimated 100,000 Americans.

Answer to Question 2

ANS: C
Although many risk factors exist for COPD (Box 25-1), the two most common are cigarette smoking (which has been estimated to account for 80 to 90 of all COPD-related deaths) and alpha1-antitrypsin deficiency.