The downside of sleep apnea surgery. Some in the sleep community are adamant that with such low success rates it should not be performed anymore. Snoring And Obstructive Sleep Apnea Syndrome By Boushahri But performing this operation is like bypassing only one blocked heart vessel when you have 3 other vessels that are blocked. Uppp sleep apnea success rate . The success rate increases with increasing tonsil size. Uppp is also offered to sleep apnea patients who opt for a more comprehensive surgical procedure known as the stanford protocol. One of the most common misconceptions about sleep apnea surgery is the relatively low success rate of the uvulopalatopharyngoplasty uppp procedure which is often quoted at 40. Although uvulopalatopharyngoplasty is effective for snoring 76 90 success rate according to the american academy of sleep medicine the efficacy of uppp surgery for sleep apnea is much lower. Uvulopalatopharyngoplasty also known by the abbreviations uppp and up3. D...