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Moacyr Saffer

Publications and source records attributed to Moacyr Saffer.

5 recordsLinked to original sources
PubMed2004

Behçet's disease: external ear involvement.

Behçet's disease is an autoimmune vasculitis characterized by recurrent episodes of oral and genital ulcerations, skin lesions and uveitis. It also affects neurological, vascular, articular and gastrointestinal systems. Although etiology and pathogenesis are under investigation, studies have shown that HLA-B51 influences genetic susceptibility. The development of the disease is associated to neutrophil activation. Treatment depends on the severity of the disease and immunosuppressive drugs are often used. Blindness and dementia are long-term concerns. We report an unprecedented case of a child with Behçet's disease presenting a skin lesion with necrosis of the external ear canal, facial paresis, Horner's syndrome and rupture of the internal carotid artery.

Behcet Syndrome↗
PubMedDate not supplied

[Tympanostomy tubes and water].

OBJECTIVE: An in vitro study was conducted to set the necessary pressure in fluids that could break resistance and cross the opening of a tympanostomy tube. METHODS: A water column model was created and graduated in centimeters from base to top. We adapted three sorts of tympanostomy tubes. In each model, fluids were tested (tap water, seawater, river water, soapy water and eardrops). The column was filled with fluid until a threshold was reached, flowing through the tube opening. The threshold was registered and represented the pressure in cmH2O. RESULTS: The results show that pressure is necessary so that a fluid can cross the opening of a ventilation tube. CONCLUSION: In spite of limitations of our in vitro study, the literature suggests that no ear protection is needed during shower, since there is neither direct flow of water nor pressure in the ear. Bathing with soapy water is potentially dangerous due to the reduction in surface tension. The direct relation of pressure and surface tension through the opening of tympanostomy tubes indicates the need to decrease pressure when diving and to avoid strong head movements in the water.

English Abstract↗