Drug-Induced Sleep Endoscopy Changes the Treatment Concept in Patients with Obstructive Sleep Apnoea

Table 3

Type of obstruction in the upper airway.

Type of collapse in upper airway	Number of patients ()
Palatal collapse	50 (98.0%)
(i) Concentric	27 (54.0%)
(ii) Anteroposterior	21 (42.0%)
(iii) Laterolateral	2 (4.0%)
Oropharyngeal collapse	45 (88.2%)
(i) Concentric	1 (2.2%)
(ii) Laterolateral	44 (97.8%)
Tongue base collapse	31 (60.8%)
(i) Anteroposterior	31 (100.0%)
Epiglottis collapse	16 (31.4%)
(i) Laterolateral	2 (12.5%)
(ii) Anteroposterior	14 (87.5%)