Reliability of the Polygraphic Home Sleep Test for OSA Determined by the Severity and Pattern Changes of Two Consecutive Examinations

Diagnosis and effective treatment of obstructive sleep apnea syndrome (OSA) in adults is an important health priority. Home respiratory polygraphy a cost-effective alternative to polysomnography OSA. The aim this study was investigate the variability two consecutive home polygraphic examinations by comparing severity characteristics pattern (supine dominant, continuous, etc.) variability. We examined 100 patients with clinically suspected OSA on nights polygraphy. correlation time bed (TIB), apnea-hypopnea index (AHI), oxygen desaturation (ODI), T90 were compared Pearson test. ranks nocturnal patterns periods using Spearman Wilcoxon tests. Pearson’s correlations represented strong AHI, ODI, T90, but only moderate for TIB. severity-specific highest AHI severe group. Out pairs examinations, 25 cases showed change ranking (decreased 11, increased 14); 15 (supine, non-supine, etc.), 6 cases. Therapy based second examination initiated Our results revealed good intra-individual between grades nights, value In some cases, nightly variation may explain severity. From therapeutic point view, low number changes groups reliability.