Which of the following are true of the peak expiratory flowrate test?
1) It is effort dependent.
2) It is taken from the FVC test results.
3) It is taken from the MVV test results.
4) It assesses large upper airways.
A)1, 3
B)1, 2, 4
C)2, 3, 4
D)1, 2, 3

Question

Quizplus · Accepted Answer

The peak expiratory flow rate (PEFR) test is effort dependent, meaning the results can vary based on the patient's effort during the test. It is derived from the forced vital capacity (FVC) test results, not the maximal voluntary ventilation (MVV) test. The PEFR primarily assesses the function of large upper airways, making options 1, 2, and 4 correct.

Which of the Following Are True of the Peak Expiratory