Redo double-opposing Z-plasty is effective for correction of marginal velopharyngeal insufficiency

Objective: Double-opposing Z-plasty (DOZ) of the Furlow method has been successfully used for the correction of marginal velopharyngeal insufficiency (VPI) by reconstructing the levator muscle and lengthening the soft palate. For a recurrent or residual marginal VPI, it was questioned whether redo DOZ could be applied to correct the problem and minimize surgical morbidity. This study reported the outcome of the redo DOZ. Materials and methods: The DOZ procedure was the method of choice for marginal VPI in the authors' center. To evaluate the effectiveness of the redo operation, patients with cleft palate with or without cleft lip treated from 2005 to 2014 were reviewed. Inclusion criteria were non-syndromic patients who underwent the second DOZ for the correction of marginal VPI. Clinical information, speech assessment, and nasopharyngoscopic findings were reviewed. Results: The velopharyngeal function was improved from marginal to adequate in all 13 patients either subjectively or objectively. The resonance became normal in nine patients after the surgery, and the change was statistically significant. Preoperative audible nasal emission improved in four out of five patients. Complications were minor or transient including one patient with snoring. No patient complained of airway or sleep problems. Conclusion: Although the levator muscle sling might be disturbed by the redo DOZ procedure, the surgery was effective in correcting the residual VPI with low morbidity.