Long-Term Resident Lunar Dust Lung Disease
Earth designation: Long-Term Resident Lunar Regolith Pneumoconiosis
Long-Term Resident presentation of Lunar Regolith Pneumoconiosis in lunar residents. Occupational lung disease from chronic inhalation of lunar regolith particles. Lunar dust is uniquely hazardous: particles are jagged and glassy (not smoothed by wind and water like Earth dust), highly reactive due to absence of oxidation weathering, and include sharp silicate shards at respirable p...
Lunar Risk Factors
EVA operations in regolith-heavy areas. Inadequate airlock decontamination. Suit breach (rare). Habitat air filtration system failure. Mining operations with powered excavation. Construction generating dust clouds.
Symptoms
Initially asymptomatic. Progressive: chronic cough, dyspnea on exertion, reduced lung function. Late stage: fibrosis, respiratory failure.
Lunar Presentation
Most insidious of all lunar occupational diseases — damage accumulates silently. First indication is often declining pulmonary function on annual spirometry. Residents with highest EVA hours are highest risk.
Diagnosis
Chest X-ray (portable), pulmonary function testing (spirometry), high-resolution CT if available on evacuation. Bronchoalveolar lavage for particle confirmation.
Treatment
No curative treatment. Remove from exposure, supportive care, corticosteroids for inflammatory phase.
Lunar Medical Bay Protocol
Immediate removal from dust exposure. Corticosteroids (methylprednisolone) for acute inflammatory phase. Bronchodilators for airflow obstruction. N-acetylcysteine as antioxidant support. Pulmonary rehabilitation exercises. Report to habitat medical officer and Earth occupational health team. Permanent EVA restrictions if fibrosis confirmed.
Evacuation Criteria
Spirometry showing FVC <60% predicted. Acute respiratory failure from dust exposure event. Progressive fibrosis despite treatment. FEV1/FVC ratio <0.7 with symptoms.
Prevention
CRITICAL PREVENTION PRIORITY. Rigorous airlock decontamination protocol after every EVA. Personal respiratory protection. Regular spirometry (every 6 months for EVA workers). EVA hour limits. Air quality monitoring in habitats.