Abstract
Uvulopalatopharyngoplasty (UPPP) has become a widely practiced procedure for the treatment of snoring and obstructive sleep apnea. Surgical outcome with UPPP has heretofore been assessed by investigators using the number of apneas per hour of sleep (apnea index) as the sole or primary criterion. We present two cases in which UPPP outcome was inadequately represented by the apnea index. It is suggested that the apnea/hypopnea index, extent of oxygen desaturations, degree of sleep fragmentation, level of daytime somnolence, interaction between respiratory function and sleep position and stages, and degree of respiratory strain be considered in the postsurgical evaluation.
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