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Table 2 Mean and (SD) values of lung function parameters on five occasions during the day

From: Random variation of inspiratory lung function parameters in patients with COPD: a diagnostic accuracy study

Parameter/time

9

10

11

14

15

FEV1

1.48 (0.70)

1.48 (0.69)

1.48 (0.90)

1.48 (0.70)

1.41 (0.68)

FIV1

2.70 (0.85)

2.71 (0.87)

2.69 (0.87)

2.65 (0.84)

2.62 (0.81)

IC

2.13 (0.69)

2.15 (0.68)

2.17 (0.72)

2.18 (0.75)

2.14 (0.79)

MIF50

4.68 (1.63)

4.61 (1.61)

4.65 (1.62)

4.51 (1.55)

4.47 (1.18)

PIF

4.96 (1.67)

4.92 (1.66)

4.95 (1.67)

4.89 (1.61)

4.84 (1.65)

  1. FEV1 = Forced Expiratory Flow in one second; FIV1 = Forced Inspiratory Flow in One second; IC- Inspiratory Capacity; MIF50 = Maximal Inspiratory Flow at 50%; PIF = peak Inspiratory Flow.
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BMC Pulmonary Medicine

ISSN: 1471-2466

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