Table 3.
Differences in Pulmonary Vessel Parameters Among Never-Smokers, Current-Smokers and Former-Smokers in Group at High Risk for COPD
| Never Smokers (n=66) | Current Smokers (n=17) | Former Smokers (n=7) | ||
|---|---|---|---|---|
| Parameters of small pulmonary vessel (at 6mm~12mm depth from the pleural surface) | ||||
| 6mm | No. Vessels(ea) | 1625.33±447.56 | 1989.12±575.74a | 1554.86±466.12 |
| No. Vessels aSA< 5mm2(ea) | 1319.94±390.56 | 1710.06±480.41a | 1247.14±391.75b | |
| Surface Area of LAA(mm2) | 6919.41±9166.8 | 21,918.47±16,014.35a | 14,517.44±19,037.54 | |
| Total Surface Area(mm2) | 178,362.1±37,000.36 | 244,999.14±30,046.91a | 192,354.74±55,014.98b | |
| 9mm | No. Vessels(ea) | 1203.29±268.23 | 1625.53±311.48a | 1257.57±279.67 |
| No. Vessels aSA< 5mm2(ea) | 805.26±231.12 | 1192.29±211.51a | 868.14±287.74b | |
| Surface Area of LAA(mm2) | 4968.86±7341.17 | 16,723.72±13,438.11a | 11,598.28±15,941.5 | |
| Total Surface Area(mm2) | 142,778.64±33,123.98 | 203,042.54±28,078.84a | 159,068.49±50,167.65b | |
| 12mm | No. Vessels(ea) | 832.14±197.48 | 1168.24±213.32a | 902.29±237.17 |
| No. Vessels CSA< 5mm2(ea) | 450.83±145.12 | 700.24±143.52a | 509.29±230.58b | |
| Surface Area of LAA(mm2) | 3367.8±5560.48 | 12,271.99±11,094.82a | 8514.65±12,072.82 | |
| Total Surface Area(mm2) | 110,174.24±29,321.42 | 161,853.05±24,979.91a | 124,656.84±45,107.24b | |
| Parameters of pulmonary vessel volume | ||||
| Lung Volume(cc) | 3400.13±889.25 | 4990.44±780.07a | 3808.37±1330.23b | |
| TBV(cc) | 210.85±52.77 | 267.31±62.33a | 221.2±40.92 | |
| BV1 (cc) | 8.7±2.89 | 11.37±3.68a | 9.22±2.57 | |
| BV5 (cc) | 101.64±28.26 | 127.67±35.87a | 100.38±24.08 | |
| BV1/TBV | 0.04±0.01 | 0.04±0.01 | 0.04±0.01 | |
| BV5/TBV | 0.48±0.06 | 0.48±0.05 | 0.45±0.06 | |
Note: Data are shown as mean±standard deviation. aSignificant difference with “never smokers” (p < 0.05). bSignificant difference with “current smokers” (p < 0.05).