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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evaluation of the Maintained Effect of 3% Hypertonic Saline Solution in an Animal Model of Intracranial Hypertension

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Author(s):
Sousa, Jr., Leonardo M. ; de Andrade, Almir F. ; Belon, Alessandro R. ; Soares, Matheus S. ; Amorim, Robson Luis ; Otochi, Jose Pinhata ; Teixeira, Manoel J. ; Paiva, Wellingson S.
Total Authors: 8
Document type: Journal article
Source: MEDICAL SCIENCE MONITOR BASIC RESEARCH; v. 22, p. 123-127, 2016.
Web of Science Citations: 1
Abstract

Background: Current clinical treatment methods for refractory intracranial hypertension include elevation of the decubitus, ventilation adjustment, and use of hypertonic solutions such as hypertonic saline and mannitol solutions. Previous studies have shown that hypertonic solutions are particularly effective. Although several concentrations of saline solution have been proposed, a 3% solution is the most widely used. The aim of this study was to evaluate the maintained efficacy of a 3% hypertonic saline solution in an experimental model of intracranial hypertension. Material/Methods: A porcine model of reversible intracranial hypertension was created by inserting a balloon catheter into the brain parenchyma, which was inflated and deflated to simulate intracranial hypertension and its surgical correction. The experiment included 3 groups of animals (A, B, and C) with different balloon inflation volumes. In group B, balloons were inflated 2 times to simulate reexpansion. A 20 mL/kg bolus of 3% saline solution was infused using a pump 90 minutes after the start of balloon inflation, and the effects of intracranial pressure were evaluated 60 minutes after infusion. Results: No increases outside of the normal range were observed in mean serum sodium concentrations (p=0.09). In addition, we identified no differences within each group in serum sodium levels measured during hypertonic saline infusion (p=0.21). No significant reductions in intracranial pressure were observed in any of the 3 groups. Conclusions: Bolus infusion of 3% hypertonic saline solution with the aid of a pump does not significantly reduce intracranial pressure in an animal model of intracranial hypertension. (AU)

FAPESP's process: 13/01160-1 - Clinical and surgical treatment of intracranial hypertension in a porcine model: evaluation of cerebral oximetry and a comparison between parenquimal versus epidural intracranial pressure monitoring
Grantee:Almir Ferreira de Andrade
Support Opportunities: Regular Research Grants