904 resultados para External stimuli


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Tramadol combines an μ opiate and nonopiate analgesic mechanism and might be a useful opioid in horses. This study evaluated the effect of IV tramadol on spontaneous locomotor activity (SLA), head height, and hoof withdrawal reflex (HWR) after thermal or electrical nociceptive stimuli in horses. Doses of 2 and 3 mg/kg tramadol did not affect HWR after electrical and thermal nociception, respectively. Head height and SLA were not modified by 2, 3, or 5 mg/kg tramadol. All horses treated with 5 mg/kg tramadol developed trembling in pectoral triceps, and gluteal muscles and adopted a base-wide stance. In conclusion, 2 and 3 mg/kg tramadol IV neither induced sedation nor prolonged HWR after thermal or electrical stimuli in conscious horses. The dose of 5 mg/kg tramadol IV produced excitement, and it is apparently unsuitable for clinical use. © 2013 Elsevier Inc. All rights reserved.

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Se refiere a las magnitudes envueltas en los problemas financieros de America Latina, al aumento de la deuda externa latinoamericana, y las razones y consecuencias de ese aumento. Plantea las soluciones de emergencia y de mediano plazo, tanto a nivel nacional como internacional, y las perspectivas para el futuro cercano.

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Examina el proceso de la renegociacion de la deuda externa y la necesidad de instaurar una logica mas compatible con los intereses de los paises latinoamericanos. Expone como condicion necesaria para lograrlo, la capacidad de los liderazgos politicos para presentar a sus pueblos las verdaderas opciones, asi como los costos y riesgos de cada una de ellas.