Morphometric measurements in pulmonary muscular arteries
| Smokers | COPD | Controls¶ | |
| Subjects n | 7 | 8 | 3 |
| Arteries/patient n | 11±2 | 10±2 | 11±2 |
| Measured external diameter µm | 208±77 | 220±96 | 186±106 |
| Measured total area mm−2·10−4 | 529±440 | 613±555 | 453±624 |
| Muscular area# | 32±8 | 31±11 | 33±10 |
| Intimal area# | 36±12 | 36±15 | 16±11 |
| Lumen area# | 32±11 | 33±14 | 51±12 |
Data are presented as mean±SD
COPD: chronic obstructive pulmonary disease
#: % measured total area
¶: data from nonsmoker control subjects shown for comparison purposes