Interferência do comprimento e ou do diâmetro interno do cateter peritoneal no funcionamento do sistema se derivação ventrículo-peritoneal

• Ano de defesa: 2017
• Autor(a) principal: Suriano, Italo Capraro [UNIFESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Paulo (UNIFESP)
• Palavras-chave em Português: Hydrocephalus; Ventricle peritoneal shunt; Hydrodynamics; Dysfunction ventricle peritoneal shunt; Shunt over drainage; Slit ventricles; Biofeedback; Musculos do assoalho pélvico; Incontinência urinária de esforço; Hidrocefalia; Hidrodinâmica; Drenagem
• Link de acesso: https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=5454147; http://repositorio.unifesp.br/handle/11600/50016

Objective: To evaluate if and how changes in the length or diameter of the peritoneal catheters alter the hydrodynamic characteristics of the peritoneal ventricle derivation systems (DVP). Material and Method: Three peritoneal ventricle shunts were tested from different manufactures, initially with the original manufactured characteristics and after its modification of the peritoneal catheter length from 1200, 1100, 1000, 800 e 600 mm and in its internal diameter from 1.5, 1.2, .1,1 to 1.0 mm. An automatized test bench was used, according to ISO 7197. Result: When they were tested with the original manufactured characteristics, the pressure values remained the same as those reported by the manufacturer. When the size of the peritoneal catheter was decreased above 200 mm, it was observed a decrease in the pressure value of the peritoneal ventricle bypass system, as well as when the diameter of the catheter was increased. When the length of the peritoneal catheter was increased or when its internal diameter was decreased, it was statistically observed an increase in the pressure of the valve (p <0,001). Conclusion: By modifying the characteristics of the peritoneal ventricle bypass systems or, it is possible to alter the system pressures and thus contribute to the increase valve dysfunction.