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. 2007 Jan-Mar;2(1):3–8. doi: 10.4103/1817-1737.30354

Table 2.

Pulmonary function test values at presentation (total 77 patients)*

Variable Mean (SD) Median Rang
FVC 66.7 (18.5) 67 28-114
FEV1 64.8 (20.3) 66 33-124
FEV1 / FVC 98 (15.6) 100 41–121
MMEF 25-75% 53 (27.1) 52 9-118
PEF 66.5 (20.3) 67 13-112
% change VENT in FEV1 15.6 (22.9) 9.5 (−31)-98
% change VENT in MMEF 25-75% 24.2 (23.9) 24 (−10)- 65
FRC 106.3 (20.7) 107 64-156
RV 151.5 (40.1) 144.5 80-237
TLC 84.5 (11.6) 84.5 53-109
RV/TLC ratio 46.4 (12.1) 44.5 27-77
RV/TLC (%) 179.9 (44.9) 170.5 101-288
*

All values are in percent predicted for age height. FVC - Forced expiratory volume in one second, MMEF - maximum mid-expiratory flow, PEF - Peak expiratory flow. % Ventolin - percentage of change in FEV1 values after administration of Ventolin, FRC - Functional residual capacity, RV - Residual volume, TLC - Total lung capactiy, RV/TLC - The ratio of RV:TLC in percentage and actual values