Table I.
DISE findings according to previous surgical treatment.
| All previous palate surgery (n=33) | Palate surgery alone (n=17) | Palate surgery and genioglossus advancement** (n=7) | Palate surgery and tongue radiofrequency** (n=9) | Palate surgery and hyoid suspension*** (n=6) | P values for chi- squared tests of palate surgery alone vs. tongue region surgery and for genioglossus advancement vs. tongue radiofrequency | |
|---|---|---|---|---|---|---|
| Analysis I. Global assessment of level(s) of obstruction | ||||||
| Palate | 17 (53%) | 7 (44%) | 4 (57%) | 6 (67%) | 6 (100%) | 0.36, 0.37 |
| Hypopharynx | 32 (97%) | 17 (100%) | 7 (100%) | 8 (89%) | 6 (100%) | 0.50, 1.00 |
| Analysis II. Degree of obstruction | ||||||
| Palate | ||||||
| <50% | 16 (48%) | 10 (59%) | 3 (43%) | 3 (33%) | 0 (0%) | 0.63, 0.63 |
| 50–75% | 2 (6%) | 1 (6%) | 0 (0%) | 1 (11%) | 1 (17%) | |
| >75% | 15 (45%) | 6 (35%) | 4 (57%) | 5 (56%) | 5 (83%) | |
| Hypopharynx | ||||||
| <50% | 1 (3%) | 0 (0%) | 0 (0%) | 1 (11%) | 0 (0%) | 1.00, 0.55 |
| 50–75% | 6 (18%) | 4 (24%) | 2 (29%) | 0 (0%) | 2 (33%) | |
| >75% | 26 (79%) | 13 (76%) | 5 (71%) | 8 (78%) | 4 (67%) | |
| Analysis III. Specific structures. | ||||||
| Primary structure contributing to obstruction at level of the palate | ||||||
| None | 16 (48%) | 10 (59%) | 3 (43%) | 3 (33%) | 0 (0%) | 0.36, 0.37 |
| Velum | 17 (52%) | 7 (41%) | 4 (57%) | 6 (67%) | 6 (100%) | |
| Tonsils | n/a | n/a | n/a | n/a | n/a | |
| Primary structure contributing to obstruction at the level of the hypopharynx | ||||||
| None | 1 (3%) | 0 (0%) | 0 (0%) | 1 (11%) | 0 (0%) | 0.84, 0.60 |
| Oropharyngeal lateral walls | 10 (30%) | 5 (29%) | 3 (43%) | 2 (22%) | 4 (67%) | |
| Tongue | 21 (64%) | 11 (65%) | 4 (57%) | 6 (67%) | 2 (33%) | |
| Epiglottis | 1 (3%) | 1 (6%) | 0 (0%) | 0 (0%) | 0 (0%) | |
| Specific structures contributing to obstruction* | ||||||
| Velum | 17 (53%) | 7 (44%) | 4 (57%) | 6 (67%) | 6 (100%) | 0.48, 1.00 |
| Oropharyngeal lateral walls | 17 (53%) | 8 (50%) | 4 (57%) | 5 (56%) | 6 (100%) | 0.72, 1.00 |
| Tongue | 29 (88%) | 15 (88%) | 6 (86%) | 8 (89%) | 4 (67%) | 1.00, 1.00 |
| Epiglottis | 8 (25%) | 6 (38%) | 1 (14%) | 1 (11%) | 0 (0%) | 0.22, 1.00 |
Note: Table reports raw results, followed by column percents.
*
Each structure is considered separately, with percentages expressed as a fraction of total DISE evaluations. Percentages sum to greater than 100% because it was possible for a patient to have more than one structure contributing to airway obstruction.
**
Includes subjects that also had undergone hyoid suspension.
***
Includes subjects that also had undergone genioglossus advancement or tongue radiofrequency.