R437 – Sonotubometry With Perfect Sequences in Pathologic Ears

ProblemSonotubometry is a non-invasive method for the evaluation of Eustachian Tube (ET) function. Perfect Sequences (PSQE) allow monitoring the ET under physiologic conditions in healthy ears. This study investigates the use of this new approach in pathologic ears.MethodsForty individuals were examined. Group A: n=20 individuals (40 normal ears). Group B: n= 11 patients (16 ears) with acute/subacute ET dysfunction. Group C: n=9 patients with chronic problems requiring tympanoplasty. Sonotubometry was performed before and after operation. As opening maneuvers, yawning, dry swallowing, water swallowing, and Toynbee were employed.ResultsIn group A an ET opening was seen in 77.06% maneuvers and in all patients. The median amplitude (A) of sound increase was 16.64 dB, the duration of the openings (D) was 365 ms. In group B these values were 34.39%, A = 9.27 dB, D=311 ms before and 72.26%, A= 19.51 dB and D=329 ms after operation (myringotomy/tympanostomy). Group C showed openings in 33.83% with A=9.78dB and D...