The investigation of sleep apnea parameters before and after the surgical treatment

In this study, the common surgical treatment of sleep apnea, UPPP operation, is evaluated by calculating of quantitative engineering parameters. In accordance of this aim, the electrocardiogram (ECG) and electroencephalogram (EEG) recordings of 21 patients were used. In the process, 1400 epochs (app. 12 hours) of before and after operation recordings were analyzed for each patient. Low-high frequency energy regions ratios (obtained from heart rate variability), beat per minute, form factor and delta, theta, beta, alpha wave energy, mean power, total energy, median frequency as ECG and EEG parameters were calculated.In the light of discussions with physicians, the patients were classified as increased and decreased of postoperative apnea-hipopnea and respiratory disturbance index. According to this classification, Mann Whitney U and Wilcoxon tests were applied for all parameters. The obtained results were interpreted with physicians.In conclusion, delta wave energy and form factor were changed significantly for pre and postoperative patient recordings. In addition, all parameters were interpreted for different physiological conditions of patients.