Multilevel surgery for OSAHS is obviously associated with improved outcomes, although this benefit is supported largely by level 4 evidence. Future research should focus on prospective and controlled studies.

Polysomnographic respiratory parameters, ESS, and snoring VAS significantly improved in patients with mild/moderate OSAHS treated with single-stage multilevel minimally invasive surgery. Multilevel minimally invasive single-stage surgery is a valid option for selected patients with mild/moderate OSAHS with the understanding that they may require secondary treatment.

In a comparable surgical protocol for obstructive sleep apnea-hypopnea syndrome, SMILE technique for tongue base reduction demonstrated increased efficacy over RFBOT but resulted in more complications. Additional experience with the procedure may reduce complications and increase overall efficacy.

The strong interexaminer correlation of FTP demonstrated by this study indicates that FTP may be a useful adjunct in describing hypopharyngeal anatomy in patients with OSAHS.