ABSTRACT
The aim of this study was to investigate the acute effects of atracurium besylate on cellular damage in corneal endothelium of chickens. Twenty healthy chicken eyes were assigned to the following groups: Group 1 (G1), experimental group (n=10); and Group 2 (G2), control (n=10). Excised corneoscleral buttons were immediately placed on glass microscopy slides with endothelial region faced up. Corneal endothelium of eyes in G1 were covered with AB (0.2mL, 10mg/mL) for 3 min and then rinsed with balanced salt solution (BSS), while the corneal endothelium of eyes in G2 were covered with BBS for 3 min. Corneas from both groups were stained with alizarin red/trypan blue and visualized by light microscopy. Ten random photographs were taken from each cornea. The area of cellular damage was measured by software in all samples and cell loss of each group was averaged and compared. Endothelial area of denudation and Descemet's membrane exposure were higher in G1 than G2. In conclusion, atracurium besylate induced an acute damage on corneal endothelium of chickens.(AU)'
Objetivou-se avaliar os efeitos agudos do besilato de atracúrio sobre o endotélio corneano de galinhas. Vinte olhos saudáveis de galinhas foram aleatoriamente separados em dois grupos com 10 olhos cada, sendo G1 o grupo controle e G2 o grupo tratamento. Imediatamente após a excisão dos botões corneoesclerais estes foram colocados em lâminas de microscopia de vidro com o lado endotelial voltado para cima. No Grupo 1, o endotélio corneano foi recoberto com 0,2ml de besilato de atracúrio (10mg/ml) durante 3 minutos e depois lavado com solução salina balanceada. No Grupo 2, o endotélio corneano foi recoberto apenas com solução salina balanceada durante 3 min. As córneas de ambos os grupos foram coradas com vermelho de alizarina e azul de tripano e visualizadas com microscópio óptico. Foram obtidas dez fotografias aleatórias de cada amostra. As imagens foram analisadas e com auxílio de um software as áreas com ausência de células endoteliais calculadas. A perda celular endotelial foi significativamente maior no grupo tratamento comparativamente ao grupo controle. Com base nos resultados apresentados foi possível concluir que o besilato de atracúrio induziu dano agudo nas células do endotélio da córnea de galinhas.(AU)
Subject(s)
Animals , Atracurium/adverse effects , Endothelium, Corneal/pathology , Mydriasis/veterinary , Chickens , Corneal Endothelial Cell Loss/veterinaryABSTRACT
Objective To analyze the effects of different age and gender on the efficacy and pharmacokinetics of the target controlled infusion of atracurium besylate on liver dysfunction.Methods 160 case of patients with liver dysfunction and undergoing elective general anesthesia operation were divided into four groups according to their age and gender, 40 cases in each group:group A (age≥65 years old, male), group B (age≥65 years old, female), group C (age<65 years old, male), group D (age<65 years old, female).The patients received one-time double dose ED95 atracurium besylate, pharmacodynamic indexes and pharmacokinetic parameters were compared.Results The four groups of patients with block onset time, block maintenance time, clinical duration of T25%, in vivo role time T95%, muscle relaxation recovery index were compared, the difference was not statistically significant.The preoperative and postoperative 24h, four groups of patients with liver function ( alanine aminotransferase, aspartate aminotransferase, albumin, bilirubin) and renal function ( creatinine, urea nitrogen) were compared, the difference was not statistically significant.There was no significant difference between the four groups in the plasma concentrations of the substance to be measured, the peak time, the area under the curve and the elimination half lives.Conclusion For the patients with liver dysfunction, the target controlled infusion of atracurium besylate in general anesthesia operation, gender and age were not considered.
ABSTRACT
Vinte cães provenientes da rotina anestésico-cirúrgica do Hospital de Clínicas Veterinárias da Universidade Federal de Santa Maria (UFSM), foram divididos em 2 grupos, I e II. e submetidos ao bloqueio neuromuscular com besilato de atracúrio 0,5mg/kg IV ou cloreto de alcurônio 0,1mg/kg IV consecutivamente. Foram monitorados a ventilometria, a freqüência cardíaca e o tempo de bloqueio neuromuscular dos animais que receberam besilato de atracúrio, submetidos à reversão espontânea, enquanto que a reversão do bloqueio produzido com cloreto de alcurônio foi realizada aos 60 minutos após instalação deste pela administração de neostigmina precedida de sulfato de atropina. Os resultados obtidos demonstraram diminuição do volume corrente pulmonar para ambos os grupos à partir da reversão do bloqueio, com diminuição significativa para o grupo que recebeu cloreto de alcurônio até vinte minutos após reversão e diferença estatisticamente significativa entre os grupos aos 20 minutos após reversão. Houve diminuição nos valores de frequência cardíaca à partir dos 10 minutos após indução anestésica até 30 minutos decorridos do bloqueio para ambos os grupos, com significando estatística no grupo que recebeu besilato de atracúrio. O tempo médio de bloqueio com besilato de atracúrio foi de 49,07 ± 12,67 minutos.
Twenty dogs for the surgical-anaesthetic routine of the Veterinary Hospital of Federal University of Santa Maria - Brazil were divided in two groups, I and II, and submitted to neuromuscular block with atracurium besylate 0.5mg/kg (I) or alcuronium chloride 0.1mg/kg (II). Ventilometry. heart rate and the time for reversion of the blockage were evaluated in group I. Reversal of relaxation in group II was carried with neostigmine preceded by atropine. The results demonstrated a reduction in tidal volume for both groups in the reversion of the blockage, with statistical significance between the groups 20 minutes after reversion. Reduction in heart rate was detected after induction at 30 minutos after established the muscle relaxation. The mean time of neuromuscular blockage with atracurium besylate was 49.07 ± 12.67 minutes.