What is the critical alpha1-antitrypsin level below which lung elastin is attacked and broken down?
a. 57 mg/dl
b. 84 mg/dl
c. 100 mg/dl
d. 150 mg/dl
ANS: A
In the face of a severe deficiency of alpha1-antitrypsin (i.e., when serum levels fall below a "pro-tective threshold" value of 11 µmol/L, or 57 mg/dl), neutrophil elastase may go unchecked, caus-ing breakdown of elastin and resulting dissolution of alveolar walls.
You might also like to view...
If a job application includes questions about an applicant's ethnicity, the applicant should ________.
A. answer the questions B. alert a supervisor immediately C. politely explain that they do not wish to answer D. refuse the job if it is offered
Which pelvic floor dysfunction syndromes will benefit from pelvic floor strengthening?
What will be an ideal response?
The food pyramid applies to patients over the age of five
Indicate whether the statement is true or false
The superior-most cartilage of the larynx is the
A) epiglottis. B) hyoid. C) cricoid. D) thyroid.