Demographic data and patients’ characteristics
The 30 patients were comprised of 22 females (73.33%) and 8 males (26.67%). Their mean age was 55.0 ± 20.19 years, ranging between 12–77 years. The average duration of the symptoms to the first treatment was 30 days. Seventeen patients had unilateral OME (56.67%) while the remaining thirteen had bilateral OME (43.33%). The physical examinations revealed a normal nasal cavity and nasopharynx in 18 patients (60%), nasal congestion in another 4 (13.33%), and nasal discharge in 8 (26.67%). The contour of the tympanic membrane was normal in 22 ears (51.16%), but 21 ears (48.84%) had tympanic membrane retraction. Right-sided OME was identified in 24 ears (55.81%) and left-sided OME in 19 ears (44.19%). There were 26 ears (60.47%) full of fluid and 17 (39.53%) with air in the middle ear. Twenty-two ears (51.16%) contained clear fluid whereas 21 ears (48.84%) had amber-colored fluid. The demographic data are presented in Table 1 .