Vocal therapy with larynx compression after partial laryngectomy.

The aim of the study was to establish the effects of the vocal therapy by manual compression of the larynx on dysphonia due to a partial laryngectomy and compare them with the effects of the standard vocal therapy. The prospective study included 66 patients submitted to any partial laryngectomy type. The patients were randomly classified into two groups: Group I (33) receiving the standard vocal therapy, and Group II (33) submitted to larynx compression vocal therapy. The 6-week vocal treatment was performed. The treatment effects were evaluated by subjective and objective voice analysis methods. The subjective and objective acoustic voice analysis revealed a significant influence (p < 0.05) of either of the two vocal therapy modes on initial dysphonia. The larynx compression vocal therapy had better effects on the acoustic parameters: habitual fundamental frequency, mean fundamental frequency, standard deviation of fundamental frequency, maximal fundamental frequency, harmonics-to-noise ratio, and signal-to-noise ratio.