[The difference of phonation patterns in vocal fold polyps and vocal nodules].

OBJECTIVE

To investigate the difference of phonation patterns by dividing patients with vocal fold polyps and vocal nodules into two groups according to muscle tension patterns (MTP).

METHOD: Fifty-six patients with vocal fold polyps and vocal nodules were divided into two groups according to phonation with MTP or not by video strobolaryngoscopy.

RESULT: MTP could be found in 85% patients with vocal nodules and in 55.56% patients with vocal fold polyps. Significant difference was found in patients with/without MTP, and difference was also found in every type of MTP.

CONCLUSION

MTP lies in most patients with vocal nodules while only part of patients with vocal fold polyps, which indicated that vocal fold polyps and vocal nodules may demonstrate different phona