Pulmonary Medicine / 2013 / Article / Tab 5

Research Article

The Immediate Pulmonary Disease Pattern following Exposure to High Concentrations of Chlorine Gas

Table 5

Pulmonary function pattern and radiographic findings in patients who underwent spirometry.

Patient Smoking
status
 Percent
predicted
FEV1/FVC
 ratio
 LLN
FEV1/FVC
 ratio
Hematology  Chest
radiographs
Pulmonary function pattern
FVCFEV1Total
WBC#
Neut*%PEIVMATS/ERS
Task force£
Mannino et al.¥ [16]Graniteville
criteria$

1Current59430.550.639.373.8YesYesOSevere OO
2Current40370.750.7114.2Miss.YesNoURR
3Current50580.790.6715.2Miss.YesNoURR
4Current45450.850.7419.7Miss.YesNoRRR
5Nonsmoker56460.730.761680YesNoORM
6Nonsmoker68630.690.681175NoNoUModerate OO
7Nonsmoker71660.810.7112.186NoNoURR
8Nonsmoker71750.870.7014.479.3NoYesRRR
9Nonsmoker66640.780.7116.9Miss.YesNoURR
10Former46370.810.7110.384YesNoURR

×103 cells/μL, *neutrophils.
PE: pulmonary edema; IVM: increased vascular markings; Miss.: missing.
O: obstructive pattern; R: restrictive pattern; M: mixed pattern; U: undetermined pattern.
£Obstructive pattern: FEV1/VC ratio below LLN; Restrictive pattern: TLC below LLN or FEV1/VC ratio ≥ 85% and a reduced VC; mixed: FEV1/VC ratio and TLC below LLN.
¥Obstructive pattern: mild: FEV1/FVC ratio < 70%, FEV1 ≥ 80% of predicted, moderate: FEV1/FVC ratio < 70%, FEV1 ≥ 50%–< 80% of predicted, severe: FEV1/FVC ratio < 70%, FEV1 < 50% of predicted; restrictive pattern: FEV1/FVC ratio ≥ 70% and FVC < 80% of predicted.
$Obstructive pattern: FEV1/FVC ratio ≤ 0.70 and normal, reduced, or increased FEV1 and FVC percent predicted; restrictive pattern FEV1/FVC ratio ≥ 0.75, FEV1 and FVC < 75% of predicted; mixed: FEV1/FVC ratio > 0.70 and < 0.75 FEV1 and FVC < 75% predicted.

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