ACOEM offers CME for reading selected articles in our peer-reviewed Journal of Occupational and Environmental Medicine (JOEM). One (1) credit can be earned per article.
To earn credits, you must have an active individual subscription to JOEM for the issue in which the ACOEM Online CME course is offered. The CME activity itself must not be expired.
About the Article
The butter flavoring additive, diacetyl (DA), can cause bronchiolitis obliterans (BO) by inhalation. A risk assessment was performed using data from a microwave popcorn manufacturing plant.
Current employees’ medical history and pulmonary function tests together with air sampling over a 2.7-year period were used to analyze forced expiratory volume in 1 second (FEV 1 ) and FEV 1 /forced vital capacity (FVC). The exposure responses for declining pulmonary function and for possible early onset of BO were estimated using multiple regression methods. Several exposure metrics were investigated; benchmark dose and excess lifetime risk of impairment were calculated.
Forty-six percent of the population had less than 6 months exposure to DA. Percent-of-predicted FEV 1 declined with cumulative exposure (0.40 per ppm-yr, P < 10 −7 ) as did percent FEV 1 /FVC (0.13 per ppm-yr, P = 0.0004). Lifetime respiratory impairment prevalence of one per thousand resulted from 0.005 ppm DA and one per thousand lifetime incidence of impairment was predicted for 0.002 ppm DA.
DA exposures, often exceeding 1 ppm in the past, place workers at high risk of pulmonary impairment.
Accessing the Online Exam
After reading the article referenced in the title of this product and purchasing this CME product, navigate to ACOEM Connect. Select "Education>Access My Online Learning" to complete the online exam and evaluation.
You will have unlimited opportunities to pass the exam to earn CME credit for each article. You may also claim MOC credit.
• 1 AMA PRA Category 1 Credit TM
• 1 ABPM Maintenance of Certification credit
This activity expires on June 30, 2021. Claiming must be completed before then to earn credit.