Which of the following statements is false about the FEV₁ measurement? A) It is a volume measurement. B) The recorded FEV₁ must come from the same forced vital capacity (FVC) effort. C) It is often compared to the size of the FVC. D) It is a popular test.

Question

Quizplus · Accepted Answer

The FEV₁ is a measurement of the volume exhaled in the first second of the FVC. To ensure validity of the FEV₁, the measurement must originate from a set of three acceptable FVC trials. The first second of forced exhalation begins at the zero time point To ensure reliability of the FEV₁, the largest FEV₁ and second largest FEV₁ from the acceptable trials should not vary by more than 0.150 L. Consistent with its definition, the largest FEV₁ (body temperature, ambient pressure, saturated [BTPS]) measured is the patient's FEV₁. The largest FEV₁ sometimes comes from a different trial than the largest FVC.

Which of the Following Statements Is False About the FEV1

Which of the Following Statements Is False About the FEV₁