Balloon Model
Mostrando 1-12 de 51 artigos, teses e dissertações.
-
1. Vaginal Distention Rodent Model for Fecal Incontinence: A Pilot Study on the Effect on Defecation Behavior
Abstract Objectives Vaginal balloon inflation simulates the compressive forces on the pelvic floor during the second phase of natural delivery. The foremost use of this animal model of vaginal distention (VD) is to study the mechanisms underlying urinary incontinence. As damage to the pelvic floor during natural birth is a common cause of fecal incontinence
Journal of Coloproctology (Rio de Janeiro). Publicado em: 2022
-
2. Ring Fracture of Brazilian Aortic Valve Bioprostheses Using Non-Compliant High-Pressure Transcatheter Balloon, an Ex Vivo Test
ABSTRACT Introduction: Aortic valve bioprostheses ring fracture in valve-in-valve procedures has shown low complication rates and presents as an option in the treatment of patients at high risk for conventional surgery, avoiding high transvalvular gradients, which are associated with increased mortality. Some prostheses available in the market cannot be fra
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
-
3. Total Panax notoginseng saponin inhibits balloon injury-induced neointimal hyperplasia in rat carotid artery models by suppressing pERK/p38 MAPK pathways
Total Panax notoginseng saponin (TPNS) is the main bioactivity compound derived from the roots and rhizomes of Panax notoginseng (Burk.) F.H. Chen. The aim of this study was to investigate the effectiveness of TPNS in treating vascular neointimal hyperplasia in rats and its mechanisms. Male Sprague-Dawley rats were randomly divided into five groups, sham (co
Braz J Med Biol Res. Publicado em: 2020-01
-
4. Technique of spinal cord compression induced by inflation of epidural balloon catheter in rabbits (Oryctologus cuniculus): efficient and easy to use model
ABSTRACT The most common cause of spinal cord injury are high impact trauma, which often result in some motor impairment, sensory or autonomic a greater or lesser extent in the distal areas the level of trauma. In terms of survival and complications due to sequelae, veterinary patients have a poor prognosis unfavorable. Therefore justified the study of exper
An. Acad. Bras. Ciênc.. Publicado em: 15/08/2016
-
5. Inferência do tempo de atividade neural a partir do efeito BOLD em ressonância magnética funcional / Inference of neural activity time from BOLD effect in functional magnetic resonance imaging
A inferência do curso temporal da atividade neural a partir do efeito BOLD é um importante problema, ainda em aberto. A forma da curva BOLD não reflete diretamente as características temporais da atividade eletrofisiológica dos neurônios. Nessa tese, é introduzido o conceito de tempo de processamento neural (TPN) como um dos parâmetros do modelo biof
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/04/2011
-
6. Atherosclerosis and acute arterial thrombosis in rabbits : a model using balloon desendothelization without dietary intervention
Acute thrombosis can be induced in rabbits by a triggering protocol using Russell’s viper venom and histamine given after 8 months of a 1% cholesterol diet and balloon desendothelization. In the present study, we tested the hypothesis that aortic desendothelization performed 4 months before the triggering protocol without a high cholesterol diet is a highl
Publicado em: 2010
-
7. Postangioplasty restenosis : a practical model in the porcine carotid artery
Transluminal coronary angioplasty is a routine therapeutic intervention in coronary heart disease. Despite the high rate of primary success, restenosis continues to be its major limitation. Porcine models have been considered to be the most adequate experimental models for studying restenosis. One limitation of porcine models is the need for radiological gui
Publicado em: 2010
-
8. Effect of saline infusion for the maintenance of blood volume on pulmonary gas exchange during temporary abdominal aortic occlusion
We analyzed the effects of saline infusion for the maintenance of blood volume on pulmonary gas exchange in ischemia-reperfusion syndrome during temporary abdominal aortic occlusion in dogs. We studied 20 adult mongrel dogs weighing 12 to 23 kg divided into two groups: ischemia-reperfusion group (IRG, N = 10) and IRG submitted to saline infusion for the main
Brazilian Journal of Medical and Biological Research. Publicado em: 07/02/2007
-
9. Numerical simulation of the process of expansion of stents for angioplasty by hydroforming / Simulação numérica do processo de expansão de stents para angioplastia por hidroconformação
In early times, the cardiovascular diseases were treated by the bypass surgery. Nowadays, these diseases have been treated with a minimally invasive procedure, the percutaneous transluminal coronary angioplasty. In one of these procedures, a metallic tubular device, known as stent, is placed on the catheter with an expandable balloon. The stent is implanted
Publicado em: 2007
-
10. Efeitos de soluÃÃo salina hipertÃnica e manitol em coelhos com hipertensÃo intracraniana aguda
Medical management of brain edema and elevated intracranial pressure (ICP) is a crucial challenge in neurosurgical practice. The control of ICP and cerebral perfusion pressure (CPP) is determinant of patient outcomes whatever the involved physiopathological mecanisms. Depending on the cause, the treatments for brain edema fall into three categories: stabiliz
Publicado em: 2006
-
11. Efeito da L-arginina na neoproliferação intimal e no remodelamento arterial após lesão por balão em ilíacas de coelhos hipercolesterolêmicos
Purpose: Neointimal proliferation and arterial remodeling are two of the most important factors responsible for restenosis. The purpose of this paper is to evaluate the influence of oral given L-arginine in neointimal proliferation and arterial remodeling after balloon injury in iliac arteries of hypercholesterolemic rabbits. Methods: 19 rabbits were divided
Publicado em: 2005
-
12. Acucise™ endopyelotomy in a porcine model: procedure standardization and analysis of safety and immediate efficacy
PURPOSE: The study here presented was done to test the technical reliability and immediate efficacy of the Acucise device using a standardized technique. MATERIALS AND METHODS: 56 Acucise procedures were performed in pigs by a single surgeon who used a standardized technique: insert 5F angiographic catheter bilaterally up to the midureter, perform retrograde
International braz j urol. Publicado em: 2004-02