The computer grades are QFVC=F and QFEV1=A. The exhalation is less than 6-seconds for all curves; however, two of the curves have a plateau in the volume-time curve. The computer grade for FVC is F as no curves have a satisfactory end of test, and for FEV1 is A, as the FEV1 is not affected by the early termination. The subject is a young female and reaching a plateau in 2 to 3 seconds is not unusual. Given the repeatability of the volume-time curves and FVC values, there is reason to expect that the FVC's represent the subject's maximal effort -- thus the revised grades of QFVC=B and QFEV1=A.
