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Pulmonary injuries associated with acute sulfur dioxide inhalation
The American Review of Respiratory Disease
|April 1, 1979
Summary
Acute sulfur dioxide exposure can be fatal. Survivors may develop severe, persistent airway obstruction or milder lung disease, highlighting the need for pulmonary function monitoring after high-level exposure.
Area of Science:
- Toxicology
- Pulmonary Medicine
- Occupational Health
Background:
- Sulfur dioxide (SO2) is an industrial gas.
- Acute high-level exposure can cause severe respiratory damage.
Purpose of the Study:
- To document the histologic findings of fatal sulfur dioxide (SO2) exposure.
- To assess the pulmonary function outcomes in survivors of acute SO2 exposure.
Main Methods:
- Case report of 5 individuals with acute sulfur dioxide (SO2) exposure.
- Histologic examination of lungs from fatal cases.
- Pulmonary function tests (PFTs) in survivors at regular intervals.
Main Results:
- Immediate death in 2 subjects with highest SO2 exposure.
- Histology revealed airway mucosal sloughing and hemorrhagic alveolar edema.
- Survivors exhibited varied PFT outcomes: severe obstructive disease, mild obstructive/restrictive disease, or normal function.
Conclusions:
- Sulfur dioxide (SO2) inhalation can cause immediate death and severe lung injury.
- Long-term pulmonary sequelae, including airway obstruction, can occur in survivors.
- Pulmonary function monitoring is crucial for individuals exposed to high concentrations of sulfur dioxide (SO2).