Vascular mechanisms in Meniere's disease. Theoretical considerations.

摘要: • Unimpeded venous drainage of the vestibular organs via paravestibular canaliculus (PVC) vein is crucial to inner ear fluid mechanisms. With increased pressure, insufficient may result in endolymphatic hydrops, unless collateral veins develop. Different mechanisms cause insufficiency different cases Meniere's. One suggested mechanism alteration intermediate sac (IES) microcirculation with decreased regulation blood held within subepithelial capillaries sac. Increased thus drain into veins, pressure and inadequate drainage. Altered micro-circulation be morphological as fibrosis or shortening IES, physiological where receives abnormal stimuli reacts abnormally normal stimuli. Venous from PVC anomalies. Variations pattern whereby preponderantly through predispose Meniere's disease. (Arch Otolaryngol1982;108:544-549)