Clinical Presentation & Protocol
Patient Usually Complains Of
Patient presents with progressive exertional dyspnea and non-productive cough. History of occupational exposure to cobalt-tungsten carbide dust (e.g., grinding, polishing, or sintering). Symptoms are chronic, insidious in onset, and may be associated with weight loss, fatigue, or intermittent wheezing. No history of smoking or other significant environmental exposures.
Clinical Examination Findings
Physical examination reveals bibasilar end-inspiratory crackles (Velcro-like rales) on pulmonary auscultation. Possible findings include digital clubbing in advanced cases, cyanosis, or signs of right-sided heart failure (cor pulmonale) such as jugular venous distension or peripheral edema. Chest wall expansion may be reduced.
Treatment Protocol
Immediate cessation of all exposure to cobalt-tungsten dust is mandatory. Treatment includes supplemental oxygen for hypoxemia, pulmonary rehabilitation, and systemic corticosteroids (e.g., prednisone) for active alveolitis. In cases of progressive respiratory failure, consider lung transplantation evaluation. Monitor pulmonary function tests (PFTs) and DLCO regularly.