Which of the following is true of the diffusing capacity test (DLCO) findings in a patient with COPD?
a. Normal in all cases
b. Decreased in emphysema
c. Decreased in chronic bronchitis
d. Increased in all cases
B
Because of alveolar destruction, patients with emphysema will have decreased gas diffusion. A decreased DLCO is a classic diagnostic sign of emphysema. The DLCO is normal in pure chronic bronchitis.
You might also like to view...
When body temperature increases, the body responds by:
A) increasing depth of respiration. B) dilating peripheral blood vessels. C) stimulating sweat glands. D) All of the above
Conduction to the ventricle is said to be ________ in junctional rhythms
Fill in the blank(s) with correct word
The FEF25%-75% is used to evaluate:
a. flow in large airways. b. restrictive lung disease. c. maximum breathing effort. d. flow in medium-size to small airways.
The ICD-10-CM Table of Neoplasms is indexed according to anatomic site and contains four cellular classifications, organized in columns: malignant, benign, uncertain behavior, and unspecified nature. Which column classifies a neoplasm for which it is not possible to predict subsequent morphology or behavior from the submitted specimen?
a. malignant b. benign c. uncertain behavior d. unspecified nature