Background: The diagnostic process and the surgical procedures in patients with snoring and obstructive sleep apnea syndrome (OSAS) are crucial. The aim of this study was to assess the efficacy of surgical treatment in snoring and OSAS patients.
Material/Methods: A precise laryngological examination and screening polysomnography (Poly-Mesam) were performed in all patients with mild, moderate and severe OSAS before and 6 months after surgery. The patients completed questionnaires concerning their complaints. We included patients qualified to septoplasty, laser-assisted uvulopalatoplasty (LAUP), uvulopalatopharyngoplasty (UPPP) and radiofrequency-induced thermotherapy of the tongue base (RITT). Outcome evaluation of surgery was performed on the basis of data received from follow-up laryngological examinations, selected parameters obtained from the Poly-Mesam test and follow-up questionnaires.
Results: In most cases we observed improvement, defined as decreasing some sleep parameters, such as a respiratory disturbance index (RDI), by more than 50%, decreasing the loudness of snoring, decreasing the number of hypopneas, and obtaining better blood saturation values. After UPPP we noticed changes in retropalatal space, soft palate dimensions and uvula-posterior pharyngeal wall distance. In the postoperative period we did not observe severe complications. In some cases we found short-lived palatal deficiency after UPPP. Patients after RITT experienced discomfort and throat pain lasting from 2 to 4 days. In 2 patients we observed swelling of the tongue base, which decreased after few days.
Conclusions: Surgery in OSAS contributes to normalization of some sleep parameters. The majority of patients experienced improvement after surgery.

Keywords: Snoring - surgery, Questionnaires, Sleep Apnea, Obstructive - surgery, Polysomnography, Otorhinolaryngologic Surgical Procedures - methods