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• W2154465162 abstract "Cerebral relaxation during intracranial surgery is necessary, and hiperosmolar therapy is one of the measures used to this end. Frequently, neurosurgical patients have sodium imbalances. The objective of the present study was to quantify and determine cerebral relaxation and duration of hydroelectrolytic changes secondary to the use of mannitol versus hypertonic isoncotic solution (HIS) during neurosurgery. Cerebral relaxation and hydroelectrolytic changes were evaluated in 29 adult patients before de beginning of infusion, and 30 and 120 minutes after the infusion of equiosmolar loads of approximately 20% mannitol (250 mL) or HIS (120 mL). The volume of intravenous fluids infused and diuresis were recorded. A p < 0.05 was considered significant. A statistically significant difference in cerebral relaxation between both groups was not observed. Although several changes in electrolyte levels and acid-base balance with mannitol or HIS reached statistical significance only the reduction in plasma sodium 30 minutes after infusion of mannitol, mean of 6.42 ± 0.40 mEq.L-1, and the increase in chloride, mean of 5.41 ± 0.96 mEq.L-1 and 5.45 ± 1.45 mEq.L-1 30 and 120 minutes after infusion of HIS, caused a transitory dislocation of serum ion levels from normal range. The mannitol (20%) group had a significantly greater diuresis at both times studied compared with HIS group. A single dose of hypertonic isoncotic saline solution [7.2% NaCl/6% HES (200/0.5)] and mannitol (20%) with equivalent osmolar loads were effective and safe in producing cerebral relaxation during elective neurosurgical procedures under general anesthesia. É necessário proceder a relaxamento cerebral durante cirurgia intracraniana e a terapia hiperosmolar é uma das medidas para sua produção. Com frequência, pacientes neurocirúrgicos apresentam distúrbios de sódio. O objetivo deste trabalho foi quantificar e determinar o relaxamento cerebral e a duração das alterações hidroeletrólíticas decorrentes do uso do manitol versus solução isoncótica hipertônica (SIH) durante neurocirurgia. Foram avaliados relaxamento cerebral e alterações hidroeletrolíticas de 29 pacientes adultos antes, 30 e 120 minutos após o término da infusão de carga aproximadamente equiosmolar de manitol 20% (250 mL) ou SIH (120 mL). Registraram-se volume de líquidos intravenosos infundidos e diurese. Considerou-se p < 0,05 como significativo. Não houve diferença estatística significativa entre os dois grupos quanto ao relaxamento cerebral. Embora várias diferenças nos eletrólitos e no equilíbrio ácido-básico com o uso de manitol ou SIH tenham alcançado significância estatística, apenas a redução do sódio plasmático, 30 minutos após o uso do manitol, em média de 6,42 ± 0,40 mEq.L-1 e a elevação do cloro em média 5,41 ± 0,96 mEq.L-1 e 5,45 ± 1,45 mEq.L-1, 30 e 120 minutos, respectivamente, após a SIH deslocaram transitoriamente os níveis séricos desses íons da faixa de normalidade laboratorial. O grupo do manitol (20%) apresentou diurese significativamente maior nos dois tempos estudados em comparação com o grupo da SIH. Solução salina isoncótica hipertônica [NaCl 7,2%/HES (200/0,5) 6%] e manitol (20%), em dose única com cargas osmolares equivalentes, foram efetivos e seguros em produzir relaxamento cerebral durante os procedimentos neurocirúrgicos eletivos sob anestesia geral. La relajación cerebral es necesaria durante la cirugía intracraneana, y la terapia hiperosmolar es una de las medidas para su producción. Los pacientes neuroquirúrgicos a menudo presentan disturbios del sodio. El objetivo del trabajo fue cuantificar y determinar la relajación cerebral y la duración de las alteraciones hidroelectrolíticas provenientes del uso del manitol versus solución isoncótica hipertónica (SIH), durante la neurocirugía. Se evaluaron la relajación cerebral y las alteraciones hidroelectrolíticas de 29 pacientes adultos antes, 30 y 120 min después del término de la infusión de carga aproximadamente equiosmolar de manitol 20% (250 mL) o SIH (120 mL). Se registró el volumen de los líquidos intravenosos infundidos y la diuresis. El P < 0,05 fue considerado significativo. No hubo ninguna diferencia estadística significativa entre los dos grupos en cuanto a la relajación cerebral. Aunque varias diferencias en los electrólitos y el equilibrio ácido-básico con el uso de manitol o SIH, hayan alcanzado una significancia estadística, solamente la reducción del sodio plasmático 30 min después del uso del manitol, como promedio de 6,42 ± 0,40 mEq.L-1, y la elevación del cloro como promedio 5,41 ± 0,96 mEq.L-1 y 5,45 ± 1,45 mEq.L-1, 30 y 120 min respectivamente después de la SIH, alteraron transitoriamente los niveles séricos de esos iones del rango de la normalidad laboratorial. El grupo del manitol (20%) tuvo una diuresis significativamente mayor en los dos tiempos estudiados en comparación con el grupo de la SIH. La solución salina isoncótica-hipertónica [NaCl 7,2%/ HES (200/0,5) 6%] y manitol (20%), en dosis única con carga osmolar equivalente, fueron efectivos y seguros para generar la relajación cerebral durante los procedimientos neuroquirúrgicos electivos bajo la anestesia general." @default.
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• W2154465162 title "Hydroelectrolytic Balance and Cerebral Relaxation with Hypertonic Isoncotic Saline versus Mannitol (20%) During Elective Neuroanesthesia" @default.
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• W2154465162 doi "https://doi.org/10.1016/s0034-7094(11)70053-8" @default.
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