The Acoustico-Vestibular Function During Dumping Provocation

Abstract

Following gastric surgery eight patients with severe dumping syndrome and seven healthy patients were tested by way of a caloric test with electro-nystagmography before and during dumping provocation with glucose and apomorphine, respectively. Further, in four of the same dumping patients and in three of the same healthy patients the acoustic function was tested under the same experimental conditions. During dumping provocation a massive, reproducible inhibition of nystagmus could be registered, whereas no changes occurred in the acoustic function, either objectively or subjectively. Injection of apomorphine produces the rame changes as administration of glucose, clinically experimentally, and with regard to nystagmus.