Laryngeal adductory pressure as a measure of post-reinnervation synkinesis.
Ann Otol Rhinol Laryngol
; 109(5): 447-51, 2000 May.
Article
de En
| MEDLINE
| ID: mdl-10823472
ABSTRACT
Laryngeal adductory pressure (LAP) is the pressure induced as the vocal folds squeeze on a balloon while the recurrent laryngeal nerve (RLN) is stimulated. The LAP has been shown to vary with the frequency of stimulation, with a characteristic slope. The RLN was divided and reanastomosed 4 different ways in 12 canine hemilaryngeal preparations; the 4 subgroups represented a range of expected post-reinnervation synkinesis recovery patterns. The LAP frequency-response curve was measured before surgery and at monthly intervals for 6 months after surgery. In the "best-case" group (RLN adductor and abductor trunks each divided and reanastomosed), the slope was found to return to normal. The 2 whole RLN division-reanastomosis groups (precise realignment or 180 degrees rotation) both gave results similar to those of the "worst-case" group (RLN adductor and abductor trunks divided and transposed); these 3 subgroups were all significantly different from baseline. The slope of the LAP frequency-response curve may be a useful means of indirectly quantifying laryngeal synkinesis.
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Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Nerf laryngé récurrent
/
Plis vocaux
/
Muscles du larynx
Limites:
Animals
Langue:
En
Journal:
Ann Otol Rhinol Laryngol
Année:
2000
Type de document:
Article
Pays d'affiliation:
États-Unis d'Amérique