[Catamnestic studies on the prognosis of sudden deafness]

The progression of the auditory system after the sudden deafness was investigated in 104 patients, one to eighteen years after the first appearance of their disease. The late development shows in 66% a stationary hearing and in 14% an improvement of the hearing. That means that beside a recurrence (7.7%) a slowly aggravation can be found in 12.3%. Stenocardic trouble and angiocardiopathies are peculiarly often reported by the patients. A reliable relation between sudden deafness and cerebral disturbed circulation could not be found.