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.
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
×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. |