RESUMO
This paper presents a new method for tympanum prosthesis application. The prosthesis is fixed by the interaction of magnetic pondermotive forces between two soft petals of a magnetoelastomer. This type of prosthesis was applied to 30 patients with dry perforative otitis media, aged 51-75 years. The intervention was performed in the outpatient department. Prostheses are recommended to be replaced every 3 months. These patients showed good tolerance of the treatment, which significantly improved their hearing level. The method of prosthesis fixation was reliable and atraumatic.
Assuntos
Prótese Ossicular , Otite Média com Derrame/cirurgia , Próteses e Implantes , Membrana Timpânica/cirurgia , Idoso , Feminino , Humanos , Magnetismo , Masculino , Pessoa de Meia-Idade , Ruptura Espontânea , Membrana Timpânica/patologiaRESUMO
The serum concentrations of Na, K, Ca, and Cl were measured in 25 patients with Meniere's disease. In the patients with hydrops, the concentrations of K, Ca, and Cl were initially increased and during dehydration slightly decreased. In the patients without hydrops, the concentration of K and Ca was near the upper limit and that of Cl was within normal limits. No specific patterns of variations of C, Ca, Cl concentrations were detected in the patients without hydrops. The K:Cl, Ca:Cl and K:Ca ratios were stable in the patients without hydrops and unstable in the patients with hydrops. They depended on the time of dehydration, which suggests that in patients with hydrops compensatory and adaptive mechanisms are persistent and flexible.
