A Biologic Control Subject Performs DLCO Measurements on 20 Consecutive

question 10

Multiple Choice

A biologic control subject performs DLCO measurements on 20 consecutive days,and the following statistics are calculated: The coefficient of variation for the DLCO in this subject:

• A) Is approximately 4.5%
• B) Cannot be calculated until 30 measurements have been made
• C) Suggests that the patient may have asthma
• D) Indicates that the DLCO system displays excessive variability

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