Table 3.
Airway luminal cross-sectional area (mm2) for subjects of varying body size
| Airway: | Men | Women | %Difference | Airway: | Men | Women | %Difference |
|---|---|---|---|---|---|---|---|
| Trachea | 305.3±46.5 | 213.7±44.8 | 30.0* | RMB | 196.5±27.3 | 141.5±26.0 | 28.0* |
| LMB | 131.8±24.8 | 93.7±22.8 | 28.9* | RUL | 87.8±20.2 | 60.6±13.4 | 30.9* |
| LUL | 92.0±51.1 | 64.5±11.5 | 29.9* | RB1 | 28.1±13.2 | 23.1±13.9 | 17.7 |
| LB1 + 2 | 29.8±7.0 | 23.1±6.8 | 22.4* | RB2 | 26.9±8.6 | 19.9±6.2 | 26.2* |
| LB1 | 15.8±5.6 | 12.8±4.8 | 19.0* | RB3 | 31.7±10.0 | 24.9±7.4 | 21.5* |
| LB2 | 13.6±4.2 | 10.6±5.3 | 21.4* | BRONINT | 119.9±25.5 | 82.8±12.8 | 31.0* |
| LB3 | 31.8±12.7 | 24.6±7.7 | 22.9* | RB4 + 5 | 33.7±8.2 | 30.1±7.5 | 10.8 |
| LB4 + 5 | 39.9±13.3 | 26.9±6.5 | 32.5* | RB4 | 15.8±4.5 | 13.3±3.3 | 15.9* |
| LB4 | 17.1±6.3 | 11.8±3.8 | 31.0* | RB5 | 21.5±6.6 | 17.3±6.5 | 19.3* |
| LB5 | 17.0±5.2 | 11.4±3.6 | 33.0* | RLL | 40.2±10.8 | 38.5±15.2 | 4.1 |
| LLB6 | 80.2±20.3 | 67.8±22.6 | 15.5* | RLL7 | 61.7±19.3 | 49.8±15.7 | 19.2* |
| LLB | 49.2±14.9 | 40.0±7.7 | 18.8* | RB6 | 27.6±9.1 | 31.5±20.8 | −14.1 |
| LB6 | 31.3±9.2 | 26.6±8.6 | 14.9 (P = 0.08) | RB7 | 23.2±19.7 | 15.2±4.8 | 34.5 (P = 0.06) |
| LB8 | 25.1±10.1 | 21.8±5.0 | 13.2 | RB8 | 19.6±5.4 | 18.0±5.8 | 8.4 |
| LB9 | 21.6±6.1 | 20.4±14.2 | 5.7 | RB9 | 20.3±6.3 | 15.5±4.3 | 23.4* |
| LB10 | 24.8±5.8 | 20.9±4.5 | 15.8* | RB10 | 24.8±7.9 | 18.4±5.0 | 25.6* |
Values are means ± SD. LMB, left main bronchus; LUL, left upper lobe; LB, left bronchus; LLB, left lower lobe; RMB, right main bronchus; RUL, right upper lobe; RB, right bronchus; BRONINT, intermediate bronchus; RLL, right lower lobe.
*
Significant difference between men and women (P < 0.05).