[Age-specific structural features of the nasal septum in children]

Hearing was studied in 20 and 34 patients with subclinical and initial renal failure (RF), respectively. RF was secondary to chronic glomerulonephritis, chronic pyelonephritis, renal polycystosis (29, 24 and 1 patients, respectively). Hearing function was assessed at tonal threshold, suprathreshold and speech audiometry, ultrasound investigations. It was found that one third of the patients had bilateral symmetric hearing disorder of neurosensory hypoacusis type. The affection was not severe but involved both peripheral and central compartments of the acoustic analyzer. High-frequency sound sensitivity suffered most of all. There was a rise in hearing thresholds by air and bone conductivity at frequencies 12-18 kHz. This rise was the only marker of affected acoustic analyzer in 39% of the examinees. 12% of the patients demonstrated elevated hearing thresholds combined with elevated ultrasound thresholds, low differential threshold of sound intensity and abnormal threshold adaptation.