Gilberto Sudre - Academia.edu (original) (raw)

Papers by Gilberto Sudre

Research paper thumbnail of Remifentanil versus dexmedetomidina como coadjuvantes de técnica anestésica padronizada em pacientes com obesidade mórbida

Revista Brasileira De Anestesiologia, Apr 1, 2004

LSBSteg, porém não detectaram nas estego-imagens geradas pelo Steghide, Outguess e F5, que usam m... more LSBSteg, porém não detectaram nas estego-imagens geradas pelo Steghide, Outguess e F5, que usam métodos diferentes do LSB.

Research paper thumbnail of Remifentanil versus dexmedetomidina como coadjuvantes de técnica anestésica padronizada em pacientes com obesidade mórbida

Revista Brasileira de Anestesiologia, 2004

GN-Remifentanil Versus Dexmedetomidina como Coadjuvantes de Técnica Anestésica Padronizada em Pac... more GN-Remifentanil Versus Dexmedetomidina como Coadjuvantes de Técnica Anestésica Padronizada em Pacientes com Obesidade Mórbida JUSTIFICATIVA E OBJETIVOS: Comparou-se a ação de duas drogas coadjuvantes da anestesia, remifentanil e dexmedetomidina, na recuperação anestésica e na evolução do pH e da PaCO 2 , em pacientes com obesidade mórbida que foram submetidos à cirurgia de Capella. MÉTODO: O estudo foi aleatório, prospectivo e duplamente encoberto. Noventa e dois pacientes foram designados a um de dois grupos e submetidos à técnica anestésica (geral/peridural) padronizada. O grupo Remifentanil (Grupo R) e o da Dexmedetomidina (Grupo D) receberam infusão contínua por via venosa destas drogas (0,1 µg.kg-1 .min-1 e 0,5 µg.kg-1 .h-1 peso ideal mais 30% para ambas) logo após a intubação traqueal. Os pacientes foram monitorizados com pressão arterial média invasiva, oximetria de pulso, EEG bispectral (BIS), capnografia, estimulador de nervo periférico e ECG. Foram avaliados: 1) diferentes tempos de recuperação anestésica (abertura dos olhos, reinicio da respiração espontânea, tempo de extubação traqueal, tempo para de alta da sala de recuperação pós-anestésica e hospitalar), 2) a evolução da gasometria arterial, e 3) analgesia pós-operatória.

Research paper thumbnail of Um Estudo de Técnicas de Esteganálise em Estego-Imagens com Texto Embutido com LSB

Brazilian Journal of Development, 2019

LSBSteg, porém não detectaram nas estego-imagens geradas pelo Steghide, Outguess e F5, que usam m... more LSBSteg, porém não detectaram nas estego-imagens geradas pelo Steghide, Outguess e F5, que usam métodos diferentes do LSB.

Research paper thumbnail of Thresholds of electrically induced defence reaction of the rat: Short- and long-term adaptation mechanisms

Behavioural Brain Research, 1993

The thresholds of electrically induced defence reaction of the rat were studied through the logis... more The thresholds of electrically induced defence reaction of the rat were studied through the logistic fitting of the response output. When stepwise increasing stimuli were applied at the dorsal midbrain, hierarchically organized mean thresholds, spaced 10/~A apart, were observed for immobility, running and jumping defensive behaviours. The parallel threshold functions of these responses, ranked in the above order, denote that they have distinct output probabilities when induced with sequential stepwise increasing stimuli. In contrast, when single dally stimuli were given in a random order, virtually superimposed threshold functions were obtained for these defensive behaviours. In this case, since the same output probabilities would be expected for immobility, running and jumping behaviours, the defence system seems to operate in a state of maximum entropy. The above data suggest that the dorsal midbrain, including the deep collicular layers and the periaqueductal gray, may encode hierarchical or non-hierarchical defensive patterns which, respectively, mimic either the attentive behaviour of the prey watching the approaching predator or its chaotic behaviour when cornered by a sudden attack. On the other hand, whereas quite stable thresholds were observed for the somatic defensive responses when 5 stimulation sessions were repeated over 15 days, the defecation and micturition output underwent a marked and progressive lessening. Since these autonomic responses have long been considered as reliable indexes of fear, their attenuation throughout the repeated sessions could express the rat adaptation to fear by the recurrence of the aversive experience. Taken together, these data suggest that while short-term neuronal adaptation could be responsible for the hierarchical threshold structure of the short interval stepwise stimulation, long-term neuronal adaptation could underlie the selective decrease of defecation and micturition responses over repeated sessions of intracranial stimulation.

Research paper thumbnail of Remifentanil versus dexmedetomidina como coadjuvantes de técnica anestésica padronizada em pacientes com obesidade mórbida

Revista Brasileira De Anestesiologia, Apr 1, 2004

LSBSteg, porém não detectaram nas estego-imagens geradas pelo Steghide, Outguess e F5, que usam m... more LSBSteg, porém não detectaram nas estego-imagens geradas pelo Steghide, Outguess e F5, que usam métodos diferentes do LSB.

Research paper thumbnail of Remifentanil versus dexmedetomidina como coadjuvantes de técnica anestésica padronizada em pacientes com obesidade mórbida

Revista Brasileira de Anestesiologia, 2004

GN-Remifentanil Versus Dexmedetomidina como Coadjuvantes de Técnica Anestésica Padronizada em Pac... more GN-Remifentanil Versus Dexmedetomidina como Coadjuvantes de Técnica Anestésica Padronizada em Pacientes com Obesidade Mórbida JUSTIFICATIVA E OBJETIVOS: Comparou-se a ação de duas drogas coadjuvantes da anestesia, remifentanil e dexmedetomidina, na recuperação anestésica e na evolução do pH e da PaCO 2 , em pacientes com obesidade mórbida que foram submetidos à cirurgia de Capella. MÉTODO: O estudo foi aleatório, prospectivo e duplamente encoberto. Noventa e dois pacientes foram designados a um de dois grupos e submetidos à técnica anestésica (geral/peridural) padronizada. O grupo Remifentanil (Grupo R) e o da Dexmedetomidina (Grupo D) receberam infusão contínua por via venosa destas drogas (0,1 µg.kg-1 .min-1 e 0,5 µg.kg-1 .h-1 peso ideal mais 30% para ambas) logo após a intubação traqueal. Os pacientes foram monitorizados com pressão arterial média invasiva, oximetria de pulso, EEG bispectral (BIS), capnografia, estimulador de nervo periférico e ECG. Foram avaliados: 1) diferentes tempos de recuperação anestésica (abertura dos olhos, reinicio da respiração espontânea, tempo de extubação traqueal, tempo para de alta da sala de recuperação pós-anestésica e hospitalar), 2) a evolução da gasometria arterial, e 3) analgesia pós-operatória.

Research paper thumbnail of Um Estudo de Técnicas de Esteganálise em Estego-Imagens com Texto Embutido com LSB

Brazilian Journal of Development, 2019

LSBSteg, porém não detectaram nas estego-imagens geradas pelo Steghide, Outguess e F5, que usam m... more LSBSteg, porém não detectaram nas estego-imagens geradas pelo Steghide, Outguess e F5, que usam métodos diferentes do LSB.

Research paper thumbnail of Thresholds of electrically induced defence reaction of the rat: Short- and long-term adaptation mechanisms

Behavioural Brain Research, 1993

The thresholds of electrically induced defence reaction of the rat were studied through the logis... more The thresholds of electrically induced defence reaction of the rat were studied through the logistic fitting of the response output. When stepwise increasing stimuli were applied at the dorsal midbrain, hierarchically organized mean thresholds, spaced 10/~A apart, were observed for immobility, running and jumping defensive behaviours. The parallel threshold functions of these responses, ranked in the above order, denote that they have distinct output probabilities when induced with sequential stepwise increasing stimuli. In contrast, when single dally stimuli were given in a random order, virtually superimposed threshold functions were obtained for these defensive behaviours. In this case, since the same output probabilities would be expected for immobility, running and jumping behaviours, the defence system seems to operate in a state of maximum entropy. The above data suggest that the dorsal midbrain, including the deep collicular layers and the periaqueductal gray, may encode hierarchical or non-hierarchical defensive patterns which, respectively, mimic either the attentive behaviour of the prey watching the approaching predator or its chaotic behaviour when cornered by a sudden attack. On the other hand, whereas quite stable thresholds were observed for the somatic defensive responses when 5 stimulation sessions were repeated over 15 days, the defecation and micturition output underwent a marked and progressive lessening. Since these autonomic responses have long been considered as reliable indexes of fear, their attenuation throughout the repeated sessions could express the rat adaptation to fear by the recurrence of the aversive experience. Taken together, these data suggest that while short-term neuronal adaptation could be responsible for the hierarchical threshold structure of the short interval stepwise stimulation, long-term neuronal adaptation could underlie the selective decrease of defecation and micturition responses over repeated sessions of intracranial stimulation.