Table I.
Levels and patterns of obstruction in patients with an AHI < 15.
| Obstruction | Sites of obstruction | |
|---|---|---|
| 199 PATIENTS 32.4% |
No Obstruction 21 (10.5 %) |
No Sites |
| Monolevel 122 (61.3%) |
O 113 (92.6%) H 5 (4.1%) L 4 (3.3%) |
|
| Multilevel 56 (28.2%) |
O + H 49 (87.5%) O + L 7 (12.5%) |
| Site of obstruction (alone or in association) |
Pattern of obstruction |
|---|---|
| Oropharynx 169 Patients 94.9% |
Antero-posterior 43.4% Latero-lateral 2.6% Circular 54% |
| Hypopharynx 54 Patients 30.3% |
Antero-posterior 76% Latero-lateral 12% Circular 12% |
O = oropharynx; H = hypopharynx; L = larynx