Home sleep testing with peripheral arterial tonometry to assess outcome in upper airway stimulation

To determine whether home sleep testing with peripheral arterial tonometry (HST-PAT) can be used in upper airway stimulation (UAS) to evaluate therapy success. Data analysis from 50 consecutive UAS patients was performed. Baseline values were measured by polysomnography (PSG) and HST-PAT. Follow-up was performed during and after titration (3- to 6-months) by PSG and HST-PAT and after 1 year by HST-PAT only. Primary outcome measures were reduction in apnea-hypopnea-index (AHI) and oxygen-desaturation-index (ODI). Additionally, an analysis of night-to-night variability (NNV) for HST-PAT was performed. All 50 patients completed their post-titration visit (3- to 6-months) and 41 patients the 1-year follow up. In HST-PAT after 1-year, mean AHI (desaturation 3%) was reduced from 29.5±17.1  to 19.9±13.1 (p