The Retrograde Ventriculosinusal Shunt in an Animal Experimental Model of Hydrocephalus.

Autor:	Pinto FC; Division of Functional Neurosurgery, Institute of Psychiatry, Hospital das Clinicas, Sao Paulo, Brazil., Becco R, Alho EJ, Poli-de-Figueiredo LF, Souza PA, Oliveira MF, Teixeira MJ
Jazyk:	angličtina
Zdroj:	Pediatric neurosurgery [Pediatr Neurosurg] 2016; Vol. 51 (3), pp. 142-8. Date of Electronic Publication: 2016 Mar 05.
DOI:	10.1159/000443795
Abstrakt:	Currently, hydrocephalus treatment is performed mainly with ventriculoperitoneal shunting. This experimental study aims at assessing whether the experimental model of hydrocephalus in dogs is applicable to the laboratory study of the retrograde ventriculosinusal shunt (RVSS). Four mongrel dogs were assessed. After randomization, the animals were divided into two groups: an experimental group that underwent the induction of hydrocephalus/RVSS and a control group, for the measurement of the mean arterial pressure, intracranial pressure and pressure in the superior sagittal sinus (SSS). The controls presented a mean arterial pressure of 68 mm Hg (71 and 65), an intracranial pressure of 163 mm H2O (149.6 and 176.8) and a pressure at the SSS of 40 mm H2O (40 and 40). The kaolin injection into the cisterna magna at a concentration of 0.3 mg/ml was capable of inducing the clinical and radiological mechanism of hydrocephalus (intracranial pressure = 250 mm H2O, pressure at the SSS = 50 mm H2O). The caliber of the SSS was 2.5 ± 1.0 mm. The fact that the SSS caliber of the dog was the same size as the external diameter of the catheter used resulted in the complete obstruction of the SSS when the catheter was inserted. We believe we could design and perform an experimental model to test the RVSS. It is applicable and feasible. The model of hydrocephalus, the surgical apparatus and the scenario were adequate, but the shunt system needs to be proportionally made to the canine anatomy. (© 2016 S. Karger AG, Basel.)
Databáze:	MEDLINE
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