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      Hemodynamic effects of volume replacement with saline solution and hypertonic hydroxyethyl starch in dogs Translated title: Efeitos hemodinâmicos da reposição volêmica com solução salina e hidroxi-etil amido hipertônico em cães

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          Abstract

          PURPOSE: To investigate hemodynamic response to volume replacement with saline solution and hypertonic hydroxyethyl starch in hypovolemic dogs. METHODS: Forty dogs under general anesthesia and hemodynamic monitoring, following measurements at baseline, were bled 20 ml.Kg-1 and parameters were measured again after 10 minutes. The animals were randomly divided in two groups and volume replacement was performed with saline solution twice the volume removed or 4 ml.Kg-1 of hypertonic hydroxyethyl starch. Hemodynamic data were again measured after 5, 15, 30, 45 and 60 minutes. RESULTS: With both solutions values returned to satisfactory hemodynamic levels. With saline solution, there was a greater amplitude in variations that tended to decrease progressively. With hypertonic hydroxyethyl starch, the parameters studied returned more rapidly to levels similar to those at baseline and varied less. CONCLUSION: Both solutions proved to be efficient at replacing volume in the short period studied, although hypertonic hydroxyethyl starch produced more stable results.

          Translated abstract

          OBJETIVO: Avaliar em cães hipovolêmicos as respostas hemodinâmicas da reposição volêmica com solução salina e hidroxi-etil amido hipertônico. MÉTODOS: Quarenta cães sob anestesia geral e monitorização hemodinâmica, após medidas em repouso foram sangrados 20 ml.Kg-1 e tiveram os parâmetros novamente medidos após 10 minutos. Os animais foram aleatoriamente divididos em dois grupos nos quais foi realizada reposição volêmica com solução fisiológica duas vezes o volume retirado ou 4 ml.Kg-1 de hidroxi-etil amido hipertônico e os dados hemodinâmicos medidos novamente após 5, 15, 30, 45 e 60 minutos. RESULTADOS: A reposição volêmica com as duas soluções fez os valores retornarem a níveis hemodinâmicos satisfatórios, a amplitude das variações com solução fisiológica foi maior, mas tendeu a diminuir progressivamente, com o hidroxi-etil amido hipertônico os parâmetros estudados retornaram a semelhantes ao repouso mais rapidamente e variaram menos. CONCLUSÃO: Ambas soluções se mostraram eficientes na reposição volêmica, o hidroxi-etil amido hipertônico proporcionou resultados mais estáveis.

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          The next generation in shock resuscitation.

          Resuscitation of the severely injured patient who presents in shock has improved greatly, following focused wartime experience and insight from laboratory and clinical studies. Further benefit is probable from technologies that are being brought into clinical use, especially hypertonic saline dextran, haemoglobin-based oxygen carriers, less invasive early monitors, and medical informatics. These technologies could improve the potential of prehospital and early hospital care to pre-empt or more rapidly reverse hypoxaemia, hypovolaemia, and onset of shock. Damage control surgery and definitive interventional radiology will probably combine with more real-time detection and intervention for hypothermia, coagulopathy, and acidosis, to avoid extreme pathophysiology and the "bloody vicious cycle". Although now widely practised as standard of care in the USA and Europe, shock resuscitation strategies involving haemoglobin replacement and fluid volume loading to regain tissue perfusion and oxygenation vary between trauma centres. One of the difficulties is the scarcity of published evidence for or against seemingly basic intervention strategies, such as early or large-volume fluid loading. Standardised protocols for resuscitation, representing the best and most current knowledge of the clinical process, could be devised and widely implemented as interactive computerised applications among trauma centres in the USA and Europe. Prevention of injury is preferable and feasible, but early care of the severely injured patient and modulation of exaggerated systemic inflammatory response due to transfusion and other complications of traditional strategies will probably provide the next generation of improvements in shock resuscitation.
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            Evaluation of induction characteristics and hypnotic potency of isoflurane and sevoflurane in healthy dogs.

            To determine induction characteristics and the minimum alveolar concentration (MAC) at which consciousness returned (MACawake) in dogs anesthetized with isoflurane or sevoflurane.
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              Propofol versus thiopental: effects on peri-induction intraocular pressures in normal dogs.

              To determine the effects of propofol or thiopental induction on intraocular pressures (IOP) in normal dogs.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                acb
                Acta Cirurgica Brasileira
                Acta Cir. Bras.
                Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (São Paulo )
                1678-2674
                April 2009
                : 24
                : 2
                : 87-92
                Affiliations
                [1 ] Universidade Estadual de Campinas Brazil
                [2 ] Universidade Estadual de Campinas Brazil
                [3 ] Universidade Estadual de Campinas Brazil
                Article
                S0102-86502009000200003
                10.1590/S0102-86502009000200003
                338c1b82-652d-41fa-80cc-ef695305fd7d

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0102-8650&lng=en
                Categories
                SURGERY

                Surgery
                Hetamido,Solução Salina Hipertônica,Cães,Hemodynamics,Hypovolemia,Hetastarch,Saline Solution, Hypertonic,Dogs,Hemodinâmica,Hipovolemia

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