Prevention of Work-related Asthma: Study Search

Prevention LevelSecondary
Study Year1995
Molecular Weight of AgentLMW
Agent CategoryAnhydrides
Specific AgentPyromellitic dianhydride (PMDA), phthalic anhydride, maleic anhydride, trimellitic anhydride (TMA)
Occupation Chemical plant workers
Outcome/DiagnosisSensitization and symptoms
Activity Intervention Removal from exposure (10 months)
Participation RateLimitation: no report of participation rate
Intervention EffectivenessRemoval from exposure resulted in cessation of symptoms for 6 of 7 subjects compared to 1 of 10 subjects who were still exposed. Lung function parameters improved within 10 months in more than 50% of affected workers.
Page last reviewed: February 20, 2020