Long-term results of a modified expansion sphincter pharyngoplasty for sleep-disordered breathing

Abstract

Our aim was to evaluate the long-term objective and subjective results of a modified expansion sphincter pharyngoplasty (ESP) technique in patients with sleep-disordered breathing. Single center prospective study of 35 patients underwent an ESP as a primary surgical treatment between June 2012 and September 2015 at the hospital AZ Sint-Jan Bruges-Ostend. Patients were divided into non-OSAS and OSAS (AHI >5). Primary outcome parameters were the Epworth Sleeping Scale (ESS, reduction and score less then 10) and the Visual Analogue Score of snoring (VAS, assessed by partner) evaluated at 3 months and 1 year. In addition, the OSAS group underwent a polysomnography after 6 months to calculate the Apneu-Hypopneu Index (AHI) change. Secondary outcome parameters were possible complications and morbidity rate. The overall Epworth Sleepiness Scale showed a steady total reduction of, respectively, 42 and 48% at the two timepoints. All patients had a post-operative score of less than ten points. The Visual Analogue Score improved in 92% of the patients; of these, the snoring was reduced in 86% and disappeared in 6%. In the OSAS group, we noticed a reduction in AHI of more than 50 in 53% of the patients. A considerable reduction was found in the severe OSAS group, where we found a mean pre-operative average AHI of 41.3/h that was reduced 6 months after the operation to 17.4/h. There were no severe complications or increased morbidity rate observed. This first long-term study shows that the modified ESP seems to be a safe and promising technique in palatal surgery for patients with sleep-disordered breathing. Surgical effectiveness is sustained after 1 year, both in OSAS as in snoring pathology. The technique seems as approachable for the basic ENT surgeon as the uvulopalatopharynoplasty.

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