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PM2.5 lowers lung function in COPD, NO2 in asthma
In a Rome panel, fine particles reduced FVC and FEV1 among COPD patients, NO2 reduced FEV1 among asthmatics, and IHD patients showed no spirometric response.
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Who was enrolled in the Rome panel?
29 adults with COPD, asthma, or IHD, examined in spring and winter 1999.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
How many spirometries were obtained?
449 in total across the 29 subjects.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
What lung-function change appeared in the COPD panel?
Negative associations of ambient PM2.5 and PM10 with FVC and FEV1.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
When did COPD FEV1 decline relative to exposure?
Only after 72 hours of accumulated exposure; FVC responded at 24–48 h.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
What pollutant reduced FEV1 among asthmatics?
Cumulative NO2 over the preceding 24, 48, and 72 hours, not PM2.5.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
Did IHD patients show pollutant-related spirometry changes?
No association with any pollutant at any lag.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
Which PM2.5 metals were linked to COPD lung-function loss?
Zinc, iron, and nickel.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
How well did indoor PM2.5 track outdoor monitors?
ρ = 0.81 overall; 0.91 in winter and 0.59 in spring.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
Where were PM2.5 and coarse PM measured?
Two Rome sites ~3.5 km apart representing low- and high-traffic areas.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
Were ozone levels high during the study?
No; they never exceeded 100 μg/m³.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified
What question was the panel designed to answer?
Whether daily pollutant fluctuations measurably change lung function in people with pre-existing lung or heart disease.
Source: Air pollution and lung function among susceptible adult subjects: a panel study · DOI · quote verified