Modified Z-palatoplasty with one-layer closure in one-stage multilevel surgery for severe obstructive sleep apnea

The meticulous two-layer closure is a step to complete the modified Z-palatoplasty, which has been reported to serve as an effective element in multilevel sleep surgery for patients with severe obstructive sleep apnea, especially with Friedman anatomical stages II and III diseases. A single layer closure—the suture closure as originally described in uvulopalatopharyngoplasty by Fujita et al., is an alternative of the two-layer closure, featured by simplicity while its efficacy has not been completely proved in patients with severe obstructive sleep apnea.

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