Objective: The role of the lateral pharyngeal muscular walls in the pathogenesis of obstructive sleep apnea hypopnea syndrome (OSAHS) is crucial. My objective is to describe a surgical procedure for splinting the lateral pharyngeal walls in patients with OSAHS and report the initial results.
Study Design: Prospective randomized pilot study performed in an academic tertiary center as part of a doctoral thesis.
Patients And Methods: Ten adults with OSAHS, originally selected for treatment with uvulopalatopharyngoplasty, underwent the lateral pharyngoplasty procedure, which consists of a microdissection of the superior pharyngeal constrictor muscle within the tonsillar fossa, sectioning of this muscle, and suturing of the created laterally based flap of that muscle to the same-side palatoglossus muscle. In addition, a palatopharyngeal Z-plasty is performed to prevent retropalatal collapse.
Results: Lateral pharyngoplasty improved sleep and daytime symptoms related to OSAHS. After at least 6 months of follow-up, the median apnea-hypopnea index decreased from 41.2 to 9.5 (P =.009) and the median total sleep time spent in rapid eye movement (REM) sleep and in stages 3 plus 4 non-REM sleep increased from 14.1% to 22.1% (P =.059) and from 5.3% to 16.3% (P =.037), respectively. Also, there was statistically significant improvement in snoring, daytime sleepiness, and overall impact of the disease on quality of life. Swallowing disturbances lasted a median of 14.5 days after the surgeries, and all patients returned to normal subjective swallowing function in the follow-up.
Conclusions: Lateral pharyngoplasty is a safe and straightforward approach to lateral pharyngeal muscles and has produced appreciable benefits for OSAHS patients.
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