Efeitos cardiorrespiratórios da dexmedetomidina isolada e associada à morfina na medicação pré-anestésica de cadelas submetidas à ovariohisterectomia eletiva / Cardiorespiratory effects of dexmedetomidine alone and associated to morphine as premedicants in healthy bitches undergoing ovariohisterectomy / Efectos cardiorespiratorios de la dexmedetomidina aislada y asociada con morfina sobre medicamentos pre-anestésicos de perras sometidas a ovariohisterectomía electiva

Objetivou-se avaliar os efeitos cardiorrespiratórios da dexmedetomidina isolada e associada à morfina em pacientes submetidas à anestesia geral inalatória com isoflurano e submetidas à ovariohisterectomia eletiva. Vinte cadelas saudáveis foram selecionadas a partir de exames físico e laboratoriais. Os animais foram distribuídos aleatoriamente em dois grupos: dexmedetomidina (10 µg/Kg) (GD) e dexmedetomidina (10 µg/Kg) associado com morfina 0,3 mg/Kg (GDM), administrados pela via intramuscular (IM). Ato contínuo, o paciente foi induzido com propofol (à efeito) e mantido com isoflurano diluído em oxigênio 100% e administrado através de vaporizador calibrado. Foram aferidos os parâmetros fisiológicos: frequências cardíaca (FC) e respiratória (f), temperatura corporal (T°C), pressões arteriais sistólica (PAS), diastólica (PAD) e média (PAM), saturação de oxigênio na hemoglobina (SpO2), pressão parcial de gás carbônico no final da expiração (ETCO2) e isoflurano expirado (ETISO). A hemogasometria arterial foi utilizada para a análise do potencial hidrogeniônico (pH), bicarbonato (HCO3-) e pressão parcial de dióxido de carbono (PaCO2). O procedimento cirúrgico teve duração máxima de 45 minutos. Os parâmetros demonstraram diferença estatística entre os tempos e grupos avaliados, de acordo com os testes de Tukey e Bonferroni (p<0,05). Observou-se bradicardia 30 minutos após a aplicação da medicação pré-anestésica e acidemia no período trans-anestésico. Apesar disto, tanto a dexmedetomidina isolada quanto associada, conferiram estabilidade hemodinâmica e respiratória, apesar da bradicardia e acidemia observada.(AU)

This study aimed to evaluate the cardiorespiratory effects of dexmedetomidine alone and associated with morphine. Twenty healthy dogs were selected from physical and laboratory exams. The animals were randomly distributed into two groups: 10 µg/Kg dexmedetomidine (DG) and 10 µg/Kg dexmedetomidine group associated with 0.3 mg/Kg morphine (GDM), administered intramuscularly (IM). The patients were induced with propofol (to effect) and maintained with isoflurane diluted in 100% oxygen and administered through a calibrated vaporizer. Physiological parameters were measured: heart rate (HR), respiratory rate (f), body temperature (T°C), systolic arterial pressure (SAP), diastolic arterial pressure (DAP) and mean arterial pressure (MAP), oxygen saturation of hemoglobin (SpO2), end-tidal carbon dioxide partial pressure (ETCO2) and end-tidal isoflurane concentration (ETISO). Arterial blood gas analysis was used to analyze hydrogen potential (pH), bicarbonate (HCO3-) and partial pressure of carbon dioxide (PaCO2). The surgical procedure lasted up to 45 minutes. The parameters showed a statistical difference between the times and groups evaluated, according to the Tukey and Bonferroni tests (p<0.05). Bradycardia was observed 30 minutes after the application of pre-anesthesic medication and acidemia in the trans-anesthetic period. Despite this, both dexmedetomidine alone and associated, provided good hemodynamic and respiratory stability, despite the bradycardia and acidemia observed.(AU)

Este estudio tuvo como objetivo evaluar los efectos cardiorrespiratorios de la dexmedetomidina sola y asociada con la morfina en pacientes sometidas a anestesia general por inhalación con isoflurano y sometidas a ovariohisterectomía electiva. Se seleccionaron veinte perras sanas a partir de exámenes físicos y de laboratorio. Los animales se dividieron aleatoriamente en dos grupos: dexmedetomidina (10 µg/kg) (GD) y dexmedetomidina (10 µg/kg) asociada con 0,3 mg/kg de morfina (GDM), administrada por vía intramuscular (IM). Posteriormente, el paciente fue inducido con propofol (en efecto) y mantenido con isoflurano diluido en oxígeno al 100% y administrado mediante de un vaporizador calibrado. Se midieron parámetros fisiológicos: frecuencia cardíaca (FC) y respiratoria (f), temperatura corporal (T°C), presión arterial sistólica (PAS), diastólica (PAD) y media (PAM), saturación de oxígeno de hemoglobina (SpO2), presión parcial de carbono dióxido al final de la expiración (ETCO2) e isoflurano expirado (ETISO). Se utilizó gasometría arterial para analizar el potencial de hidrógeno (pH), el bicarbonato (HCO3-) y la presión parcial de dióxido de carbono (PaCO2). El procedimiento quirúrgico tuvo una duración máxima de 45 minutos. Los parámetros mostraron diferencia estadística entre los tiempos y grupos evaluados, según las pruebas de Tukey y Bonferroni (p <0.05). Se observó bradicardia 30 minutos después de la aplicación de medicación preanestésica y acidemia en el período transnestésico. A pesar de esto, tanto la dexmedetomidina aislada como la asociada proporcionaron estabilidad hemodinámica y respiratoria, a pesar de la bradicardia y acidemia observadas.(AU)

Postoperative evaluation of analgesia promoted by the use of dexmedetomidine alone and associated with morphine as an intramuscular pre-anesthetic medication in bitches submitted for ovariohysterectomy / Avaliação pós-operatória da analgesia promovida pelo uso da dexmedetomidina isolada e associada à morfina em cadelas submetidas à ovariohisterectomia

This study aimed to evaluate the postoperative analgesic efficacy of dexmedetomidine alone and when associated with morphine in patients under general inhalational anesthesia with isoflurane and undergoing elective ovariohysterectomy (OH). Twenty healthy bitches were selected via physical and laboratory examinations. Prior to the study, they underwent a 24-h period of adaptation to the environment and observers. They were then randomly divided into two groups: the dexmedetomidine group receiving a dose of 10 µg/kg, and dexmedetomidine group (10 µg/kg) associated with morphine receiving a dose of 0.3 mg/kg, administered via the intramuscular route. Thereafter, patients were induced with propofol and maintained with isoflurane diluted in 100% oxygen administered through a calibrated vaporizer. To verify postoperative analgesia, pain assessments were performed using the modified Glasgow (EGM) and Melbourne (EM) scales. For sedation assessment, the Dobbins scale was used at different times: before the administration of pre-anesthetic medication (T0) and at another six times in the postoperative period, 1 (T1), 2 (T2), 4 (T3), 8 (T4), 12 (T5), and 24 (T6) h after orotracheal extubation. No statistical differences were observed between groups in the scales according to Dunn's Kruskal-Wallis post hoc test, and between the times a statistical difference was noticed by the Friedman test (p<0.05) for the EGM and EM scale scores, but there was no need for analgesic rescue. Therefore, we found that isolated dexmedetomidine and morphine produced adequate analgesic effects in the postoperative period of bitches submitted for OH.

Objetivou-se avaliar a eficácia analgésica pós-operatória da dexmedetomidina isolada e associada à morfina em pacientes submetidas à anestesia geral inalatória com isoflurano e submetidas à ovariohisterectomia eletiva (OH). Vinte cadelas saudáveis foram selecionadas a partir de exames físico e laboratoriais. Previamente ao estudo, foram submetidas a um período de 24 horas de adaptação ao ambiente e aos observadores. Ato contínuo, foram divididas aleatoriamente em dois grupos: grupo dexmedetomidina, na dose de 10 µg/Kg (GD) e grupo dexmedetomidina (10 µg/Kg) associado com morfina, na dose de 0,3 mg/Kg (GDM), administrados pela via intramuscular (IM). Ato contínuo, as pacientes foram induzidas com propofol e mantidas com isoflurano diluído em oxigênio 100% e administrado através de vaporizador calibrado. Para verificação da analgesia pós-operatória foram realizadas avaliações de dor por meio de escalas de Glasgow Modificada (EGM) e de Melbourne (EM). Para avaliação de sedação, por meio da escala de Dobbins (ED), em diferentes tempos: antes da administração da MPA (T0), e em mais 6 tempos no período pós-operatório, uma (T1), duas (T2), quatro (T3), oito (T4), 12 (T5) e 24 (T6) horas após a extubação orotraqueal. Não foram observadas diferenças estatísticas entre os grupos nas escalas de acordo com o teste de Kruskal-Wallis post-hoc de Dunn; e entre os tempos notou-se diferença estatística pelo teste de Friedman (p<0,05) para EGM e EM, porém não houve necessidade de resgate analgésico. Portanto, conclui-se que a dexmedetomidina isolada e associada a morfina produziu efeito analgésico adequado no período pós-operatório de cadelas submetidas a OH.

Avaliação pós-operatória da analgesia promovida pelo uso da dexmedetomidina isolada e associada à morfina em cadelas submetidas à ovariohisterectomia / Postoperative evaluation of analgesia promoted by the use of dexmedetomidine alone and associated with morphine as an intramuscular pre-anesthetic medication in bitches submitted for ovariohysterectomy

Objetivou-se avaliar a eficácia analgésica pós-operatória da dexmedetomidina isolada e associada à morfina em pacientes submetidas à anestesia geral inalatória com isoflurano e submetidas à ovariohisterectomia eletiva (OH). Vinte cadelas saudáveis foram selecionadas a partir de exames físico e laboratoriais. Previamente ao estudo, foram submetidas a um período de 24 horas de adaptação ao ambiente e aos observadores. Ato contínuo, foram divididas aleatoriamente em dois grupos: grupo dexmedetomidina, na dose de 10 μg/Kg (GD) e grupo dexmedetomidina (10 μg/Kg) associado com morfina, na dose de 0,3 mg/Kg (GDM), administrados pela via intramuscular (IM). Ato contínuo, as pacientes foram induzidas com propofol e mantidas com isoflurano diluído em oxigênio 100% e administrado através de vaporizador calibrado. Para verificação da analgesia pós-operatória foram realizadas avaliações de dor por meio de escalas de Glasgow Modificada (EGM) e de Melbourne (EM). Para avaliação de sedação, por meio da escala de Dobbins (ED), em diferentes tempos: antes da administração da MPA (T0), e em mais 6 tempos no período pós-operatório, uma (T1), duas (T2), quatro (T3), oito (T4), 12 (T5) e 24 (T6) horas após a extubação orotraqueal. Não foram observadas diferenças estatísticas entre os grupos nas escalas de acordo com o teste de Kruskal-Wallis post-hoc de Dunn; e entre os tempos notou-se diferença estatística pelo teste de Friedman (p<0,05) para EGM e EM, porém não houve necessidade de resgate analgésico. Portanto, conclui-se que a dexmedetomidina isolada e associada a morfina produziu efeito analgésico adequado no período pós-operatório de cadelas submetidas a OH.

This study aimed to evaluate the postoperative analgesic efficacy of dexmedetomidine alone and when associated with morphine in patients under general inhalational anesthesia with isoflurane and undergoing elective ovariohysterectomy (OH). Twenty healthy bitches were selected via physical and laboratory examinations. Prior to the study, they underwent a 24-h period of adaptation to the environment and observers. They were then randomly divided into two groups: the dexmedetomidine group receiving a dose of 10 μg/kg, and dexmedetomidine group (10 μg/kg) associated with morphine receiving a dose of 0.3 mg/kg, administered via the intramuscular route. Thereafter, patients were induced with propofol and maintained with isoflurane diluted in 100% oxygen administered through a calibrated vaporizer. To verify postoperative analgesia, pain assessments were performed using the modified Glasgow (EGM) and Melbourne (EM) scales. For sedation assessment, the Dobbins scale was used at different times: before the administration of pre-anesthetic medication (T0) and at another six times in the postoperative period, 1 (T1), 2 (T2), 4 (T3), 8 (T4), 12 (T5), and 24 (T6) h after orotracheal extubation. No statistical differences were observed between groups in the scales according to Dunn’s Kruskal-Wallis post hoc test, and between the times a statistical difference was noticed by the Friedman test (p<0.05) for the EGM and EM scale scores, but there was no need for analgesic rescue. Therefore, we found that isolated dexmedetomidine and morphine produced adequate analgesic effects in the postoperative period of bitches submitted for OH.

Influência de diferentes doses de butorfanol na anestesia com sevofluorano em papagaios-verdadeiros (Amazona aestiva) / Influence of different doses of butorphanol in anesthesia with sevoflurane in blue-fronted parrots (Amazona aestiva)

Background: Parrots frequently require veterinary medical care. To reduce their stress, it is necessary to use chemical restraint or anesthesia. The use of balanced anesthesia techniques such as combinations of inhaled and injectable drugs is recommended. However, there is a shortage of anesthetic and analgesic protocols and data on cardiovascular and respiratory variables in wild birds. The objective of the present study was to evaluate the analgesic, cardiovascular, and respiratory effects and the quality of anesthetic recovery in blue-front parrots (Amazona aestiva) anesthetized with sevoflurane in combination with various doses of butorphanol. Materials, Methods & Results: Twenty-four clinically healthy animals, based on their clinical and hematological results (hematocrit and total plasma protein), were divided into 3 groups: 1- sevofluoran alone (GS); 2- associated with butorphanol at 3 mg/kg (GB3), and 3- 6 mg/kg (GB6) doses administered via the intramuscular (IM) route; digital clamping was used as a nociceptive stimulus. Induction and anesthetic maintenance were performed with sevoflurane at 5 and 2.5 V%, respectively, administered through a calibrated vaporizer and an anesthetic system adequate for the weight of the animals that were kept under spontaneous ventilation. It took 15 min after induction for the expired sevoflurane concentration (EtSevo) to stabilize, after which one intramuscular treatment was applied. The digital clamping was continued as a supramaximal nociceptive stimulus; if it presented a positive response, EtSevo increased by 10%, and when the stimulus decreased by 20%, digital clamping was repeated every 15 min until a positive response to the stimulus was observed. Heart rate (HR) and rhythm, respiratory rate (f), systolic blood pressure (SBP), EtSevo, expired CO2 (EtCO2 ), and body temperature (T°C) were measured during digital clamping. At the end, anesthetic...

Infusão contínua de duas doses de fentanil associadas à lidocaína e cetamina em fêmeas caninas anestesiadas com sevoflurano e submetidas à ovariohisterectomia eletiva / Continuous infusion of two doses of fentanyl associated with lidocaine and ketamine for female dogs anesthetized with sevoflurane and undergoing elective ovariohysterectomy / Infusión continua de dos dosis de fentanila asociada a lidocaína y ketamina en perras anestesiadas con sevoflurane y sometidas a ovariohisterectomía electiva

O objetivo deste trabalho foi avaliar os efeitos cardiorrespiratórios de duas doses de fentanil associadas à lidocaína e cetamina em fêmeas caninas anestesiadas com sevoflurano e submetidas à ovariohisterectomia eletiva. Foram utilizados 18 animais distribuídos aleatoriamente em dois grupos. Os animais do grupo A (GA) receberam pela via intravenosa um bolus de fentanil de 0,0018 mg/kg e os do grupo B (GB) 0,0036 mg/kg, ambos associados a lidocaína 3 mg/kg e cetamina 0,6 mg/kg. Imediatamente após o bolus realizou-se a indução com propofol seguido do início da infusão contínua (IC) de fentanil na dose de 0,0018 mg/kg/h para o GA e 0,0036 mg/kg/h para GB, ambos associados a 3 e 0,6 mg/kg/h de lidocaína e cetamina. A anestesia foi mantida com sevoflurano diluído em oxigênio 100% a 1,5V% por meio de vaporizador calibrado que foi ajustado para a manutenção do plano anestésico cirúrgico. Os animais foram posicionados em decúbito dorsal e permaneceram sob ventilação espontânea. Foram avaliados os valores basais (T0), após indução (T1) e 5 (T5), 20 (T20) e 35 (T35) minutos de IC dos seguintes parâmetros: frequência cardíaca (FC), frequência respiratória (f), pressão arterial sistólica (PAS), diastólica (PAD) e média (PAM), saturação de oxigênio na hemoglobina (SatO2), pressão parcial de dióxido de carbono (EtCO2) e o sevoflurano expirado (EtSevo). A análise estatística foi realizada através da análise de variância seguida do teste de Scott-knott. As diferenças foram consideradas significativas quando P< 0,05. A FC reduziu após 20 minutos de IC e a f, PAS, PAD e PAM diminuíram após indução anestésica. Tais diferenças não foram relevantes clinicamente e os valores se mantiveram dentro do limite fisiológico. Pode-se concluir que as duas doses de infusão contínua de fentanil produziram estabilidade cardiovascular e respiratória, além de permitirem a diminuição do requerimento de sevoflurano para a realização da ovariohisterectomia eletiva.(AU)

The aim of this study was to evaluate the cardiorespiratory effects of two doses of fentanyl associated with lidocaine and ketamine in canine females anesthetized with sevoflurane and submitted to elective ovariohysterectomy. 18 animals were randomly assigned to two groups. Group A (GA) animals received a loading dose intravenously of fentanyl 0.0018 mg/kg and those of group B (GB) 0.0036 mg/kg, both associated with lidocaine 3 mg/kg and ketamine 0, 6 mg/kg. Immediately after the loading dose, induction with propofol was realized followed by continuous infusion (CI) of fentanyl at the dose of 0.0018 mg/kg/h for GA and 0.0036 mg/kg/h for GB, both associated to 3 and 0.6 mg/kg/h of lidocaine and ketamine. The anesthesia was maintained with sevoflurane diluted in 100% oxygen at 1.5% by a calibrated vaporizer that was adjusted for the maintenance of the surgical anesthetic plane. The animals were placed in dorsal decubitus position and remained under spontaneous ventilation. Was evaluated the baseline values (T0), after induction (T1) and 5 (T5), 20 (T20) and 35 (T35) minutes of following parameters: heart rate (HR), respiratory rate (f), systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean blood pressure (MAP), oxygen saturation in hemoglobin (SatO2), partial carbon dioxide (EtCO2) pressure and expired sevoflurane (EtSevo). Statistical analysis was performed through analysis of variance followed by the Scott-knott test. Differences were considered significant when P< 0.05. HR decreased after 20 minutes of CI and f, SBP, DBP and MAP decreased after anesthetic induction. These differences were not clinically relevant and the values remained within the physiological limit. It can be concluded that the two doses of continuous infusion of fentanyl produced cardiovascular and respiratory stability, besides allowing the reduction of the sevoflurane requirement for elective ovariohysterectomy.(AU)

El objetivo de este trabajo fue evaluar los efectos cardiorrespiratorios de dos dosis de fentanil asociadas a la lidocaína y cetamina en perras anestesiadas con sevoflurane y sometidas a la ovariohisterectomía electiva. Se utilizaron 18 animales distribuidos aleatoriamente en dos grupos. Los animales del grupo A (GA) recibieron por vía intravenosa un bolus de fentanil de 0,0018 mg/kg y los del grupo B (GB) 0,0036 mg/kg, ambos asociados a lidocaína 3 mg/kg y cetamina 0,6 mg/kg. Inmediatamente después del bolus se realizó la inducción con propofol seguido del inicio de la infusión continua (IC) de fentanil a la dosis de 0,0018 mg/kg/h para el GA y 0,0036 mg/kg/h para GB, ambos asociados a 3 y 0,6 mg/kg/h de lidocaína y cetamina. La anestesia fue mantenida con sevoflurane diluido en oxígeno 100% a 1,5V% a través de vaporizador calibrado que fue ajustado para el mantenimiento del plano anestésico quirúrgico. Los animales fueron colocados en decúbito dorsal y permanecieron bajo ventilación espontánea. Se evaluaron los valores basales (T0), después de la inducción (T1) y 5 (T5), 20 (T20) y 35 (T35) minutos de IC de los siguientes parámetros: frecuencia cardíaca (FC), frecuencia respiratoria (f), presión arterial sistólica (PAS), presión arterial diastólica (PAD) y presión arterial media (PAM), saturación de oxígeno en la hemoglobina (SatO2), presión parcial de dióxido de carbón (EtCO2) y el sevoflurane expirado (EtSevo). El análisis estadístico fue realizado a través del análisis de varianza seguida de la prueba de Scott-knott. Las diferencias se consideraron significativas cuando P< 0,05. La FC redujo después de 20 minutos de IC y la f, PAS, PAD y PAM disminuyeron después de la inducción anestésica. Estas diferencias no fueron relevantes clínicamente y los valores se mantuvieron dentro del límite fisiológico. Se puede concluir que las dos dosis de infusión continua de fentanil produjeron estabilidad cardiovascular y respiratoria, además de permitir la disminución del requerimiento de sevoflurane para la realización de la ovariohisterectomía electiva.(AU)

Comparison of the effects of maropitant, lidocaine, and dextroketamine administered by the intratesticular route in dogs undergoing elective orchiectomy

Background: Balanced anesthesia achieved with combinations of inhaled and injectable drugs administered systemicallyor in loco-regional anesthetic blocks, is widely used in veterinary medicine. The use of anesthesia and/or local analgesiahas already demonstrated benefits in the performance of elective orchiectomy in different species, there is no literature thatevaluates the use of the maropitant intratesticular route. The present study evaluated the cardiorespiratory variables andanalgesia produced by intratesticular blockade with maropitant, lidocaine, or dextroketamine during the trans-operativeperiod along with the discharge and anesthetic recovery of dogs that underwent elective orchiectomy.Materials, Methods & Results: Used twenty-four dogs from routine elective orchiectomy, considered healthy based onthe results of clinical and hematological tests. The animals were randomly divided into three groups and was applied intratesticularly 2% lidocaine at a dose of 1 mg/kg (GL), 5% dextrocetamina at a dose of 2.5 mg/kg (GC), or 1% maropitantat a dose of 1 mg/kg (GM). Anesthesia induction was performed with propofol (to effect), and stabilization of inhalationalanesthesia was achieved with 1.7 V% of sevoflurane diluted in 100% oxygen administered through a calibrated vaporizerand appropriate anesthetic system based on the animals weight, being kept under spontaneous ventilation, After induction, we waited 10 min for stabilization of exhaled anesthetic concentration and then administered one of the treatmentsintratesticularly. After five min from the local block the surgical procedure was started during up to 15 min. Heart rate(HR), respiratory rate (RR), systolic arterial pressure (SAP), diastolic arterial pressure (DAP), mean arterial pressure(MAP), oxygen saturation of hemoglobin (SatO2), end-tidal carbon dioxide partial pressure (EtCO2), end-tidal sevofluraneconcentration...(AU)

Infusão contínua de duas doses de fentanil associadas à lidocaína e cetamina em fêmeas caninas anestesiadas com sevoflurano e submetidas à ovariohisterectomia eletiva / Continuous infusion of two doses of fentanyl associated with lidocaine and ketamine for female dogs anesthetized with sevoflurane and undergoing elective ovariohysterectomy / Infusión continua de dos dosis de fentanila asociada a lidocaína y ketamina en perras anestesiadas con sevoflurane y sometidas a ovariohisterectomía electiva

O objetivo deste trabalho foi avaliar os efeitos cardiorrespiratórios de duas doses de fentanil associadas à lidocaína e cetamina em fêmeas caninas anestesiadas com sevoflurano e submetidas à ovariohisterectomia eletiva. Foram utilizados 18 animais distribuídos aleatoriamente em dois grupos. Os animais do grupo A (GA) receberam pela via intravenosa um bolus de fentanil de 0,0018 mg/kg e os do grupo B (GB) 0,0036 mg/kg, ambos associados a lidocaína 3 mg/kg e cetamina 0,6 mg/kg. Imediatamente após o bolus realizou-se a indução com propofol seguido do início da infusão contínua (IC) de fentanil na dose de 0,0018 mg/kg/h para o GA e 0,0036 mg/kg/h para GB, ambos associados a 3 e 0,6 mg/kg/h de lidocaína e cetamina. A anestesia foi mantida com sevoflurano diluído em oxigênio 100% a 1,5V% por meio de vaporizador calibrado que foi ajustado para a manutenção do plano anestésico cirúrgico. Os animais foram posicionados em decúbito dorsal e permaneceram sob ventilação espontânea. Foram avaliados os valores basais (T0), após indução (T1) e 5 (T5), 20 (T20) e 35 (T35) minutos de IC dos seguintes parâmetros: frequência cardíaca (FC), frequência respiratória (f), pressão arterial sistólica (PAS), diastólica (PAD) e média (PAM), saturação de oxigênio na hemoglobina (SatO2), pressão parcial de dióxido de carbono (EtCO2) e o sevoflurano expirado (EtSevo). A análise estatística foi realizada através da análise de variância seguida do teste de Scott-knott. As diferenças foram consideradas significativas quando P< 0,05. A FC reduziu após 20 minutos de IC e a f, PAS, PAD e PAM diminuíram após indução anestésica. Tais diferenças não foram relevantes clinicamente e os valores se mantiveram dentro do limite fisiológico. Pode-se concluir que as duas doses de infusão contínua de fentanil produziram estabilidade cardiovascular e respiratória, além de permitirem a diminuição do requerimento de sevoflurano para a realização da ovariohisterectomia eletiva.

The aim of this study was to evaluate the cardiorespiratory effects of two doses of fentanyl associated with lidocaine and ketamine in canine females anesthetized with sevoflurane and submitted to elective ovariohysterectomy. 18 animals were randomly assigned to two groups. Group A (GA) animals received a loading dose intravenously of fentanyl 0.0018 mg/kg and those of group B (GB) 0.0036 mg/kg, both associated with lidocaine 3 mg/kg and ketamine 0, 6 mg/kg. Immediately after the loading dose, induction with propofol was realized followed by continuous infusion (CI) of fentanyl at the dose of 0.0018 mg/kg/h for GA and 0.0036 mg/kg/h for GB, both associated to 3 and 0.6 mg/kg/h of lidocaine and ketamine. The anesthesia was maintained with sevoflurane diluted in 100% oxygen at 1.5% by a calibrated vaporizer that was adjusted for the maintenance of the surgical anesthetic plane. The animals were placed in dorsal decubitus position and remained under spontaneous ventilation. Was evaluated the baseline values (T0), after induction (T1) and 5 (T5), 20 (T20) and 35 (T35) minutes of following parameters: heart rate (HR), respiratory rate (f), systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean blood pressure (MAP), oxygen saturation in hemoglobin (SatO2), partial carbon dioxide (EtCO2) pressure and expired sevoflurane (EtSevo). Statistical analysis was performed through analysis of variance followed by the Scott-knott test. Differences were considered significant when P< 0.05. HR decreased after 20 minutes of CI and f, SBP, DBP and MAP decreased after anesthetic induction. These differences were not clinically relevant and the values remained within the physiological limit. It can be concluded that the two doses of continuous infusion of fentanyl produced cardiovascular and respiratory stability, besides allowing the reduction of the sevoflurane requirement for elective ovariohysterectomy.

El objetivo de este trabajo fue evaluar los efectos cardiorrespiratorios de dos dosis de fentanil asociadas a la lidocaína y cetamina en perras anestesiadas con sevoflurane y sometidas a la ovariohisterectomía electiva. Se utilizaron 18 animales distribuidos aleatoriamente en dos grupos. Los animales del grupo A (GA) recibieron por vía intravenosa un bolus de fentanil de 0,0018 mg/kg y los del grupo B (GB) 0,0036 mg/kg, ambos asociados a lidocaína 3 mg/kg y cetamina 0,6 mg/kg. Inmediatamente después del bolus se realizó la inducción con propofol seguido del inicio de la infusión continua (IC) de fentanil a la dosis de 0,0018 mg/kg/h para el GA y 0,0036 mg/kg/h para GB, ambos asociados a 3 y 0,6 mg/kg/h de lidocaína y cetamina. La anestesia fue mantenida con sevoflurane diluido en oxígeno 100% a 1,5V% a través de vaporizador calibrado que fue ajustado para el mantenimiento del plano anestésico quirúrgico. Los animales fueron colocados en decúbito dorsal y permanecieron bajo ventilación espontánea. Se evaluaron los valores basales (T0), después de la inducción (T1) y 5 (T5), 20 (T20) y 35 (T35) minutos de IC de los siguientes parámetros: frecuencia cardíaca (FC), frecuencia respiratoria (f), presión arterial sistólica (PAS), presión arterial diastólica (PAD) y presión arterial media (PAM), saturación de oxígeno en la hemoglobina (SatO2), presión parcial de dióxido de carbón (EtCO2) y el sevoflurane expirado (EtSevo). El análisis estadístico fue realizado a través del análisis de varianza seguida de la prueba de Scott-knott. Las diferencias se consideraron significativas cuando P< 0,05. La FC redujo después de 20 minutos de IC y la f, PAS, PAD y PAM disminuyeron después de la inducción anestésica. Estas diferencias no fueron relevantes clínicamente y los valores se mantuvieron dentro del límite fisiológico. Se puede concluir que las dos dosis de infusión continua de fentanil produjeron estabilidad cardiovascular y respiratoria, además de permitir la disminución del requerimiento de sevoflurane para la realización de la ovariohisterectomía electiva.

Avaliação da analgesia pós-operatória da dexmedetomidina isolada e associada à morfina quando utilizada na medicação pré-anestésica em cadelas submetidas à ovariosalpingohisterectomia eletiva / Evaluation of postoperative analgesia of dexmedetomidine alone or associated to morphine as premedicants in bitches undergoing ovariosalpingohisterectomy

Background: Elective ovariossalpingohysterectomy is a common surgery that causes mild to moderate pain. Aiming at the treatment of pain in these patients, analgesia should be balanced from pre-anesthetic, transoperative and postoperative medication, with-2-agonists and opioids being commonly used, especially dexmedetomidine that has sedation, relaxation muscle and analgesia.The aim of the present study was to evaluate the postoperative analgesic efficacy of dexmedetomidine alone and associated withmorphine when used in the preanesthetic medication of bitches submitted to elective ovarian oysterectomy using the modifiedGlasgow pain scale and the Melbourne pain scale.Materials, Methods & Results: Twenty bitches were used in this study, all of them submitted to ovarian oysterectomy, and were clinically healthy according to laboratory and clinical exams. During the experiment, bitches were randomly distributed into two groups,which received preanesthetic medication (MPA) with 5 μg/kg dexmedetomidine alone (GD) or associated with 0.3 mg/kg morphine(GDM) intramuscularly (IM). In both groups, anesthetic induction with dose-effect propofol was performed and maintained withisoflurane diluted in 100% oxygen administered through a calibrated vaporizer and appropriate anesthetic system based on the weightof the animal and maintained on spontaneous ventilation. After stabilization of the patient the surgery was started, which lasted 45min. The bitches were evaluated by the Modified Glasgow Scale (GSM), the Melbourne Scale (MS) and the Dobbins Sedation Scale(DS), previously administered MPA (T0) and the others performed in 1h (T1), 2h (T2), 4h (T3), 8h (T4), 12h (T5) and 24h (T6) afterextubation. If the GSM score was greater than the value of 3.3 an analgesic rescue of 0.5 mg/kg of morphine intramuscularly would beadministered. An increase in the scoring of pain scales in both groups can be observed from the T1, with significant difference only ofthe...(AU)

Avaliação da analgesia pós-operatória da dexmedetomidina isolada e associada à morfina quando utilizada na medicação pré-anestésica em cadelas submetidas à ovariosalpingohisterectomia eletiva / Evaluation of postoperative analgesia of dexmedetomidine alone or associated to morphine as premedicants in bitches undergoing ovariosalpingohisterectomy

Background: Elective ovariossalpingohysterectomy is a common surgery that causes mild to moderate pain. Aiming at the treatment of pain in these patients, analgesia should be balanced from pre-anesthetic, transoperative and postoperative medication, with-2-agonists and opioids being commonly used, especially dexmedetomidine that has sedation, relaxation muscle and analgesia.The aim of the present study was to evaluate the postoperative analgesic efficacy of dexmedetomidine alone and associated withmorphine when used in the preanesthetic medication of bitches submitted to elective ovarian oysterectomy using the modifiedGlasgow pain scale and the Melbourne pain scale.Materials, Methods & Results: Twenty bitches were used in this study, all of them submitted to ovarian oysterectomy, and were clinically healthy according to laboratory and clinical exams. During the experiment, bitches were randomly distributed into two groups,which received preanesthetic medication (MPA) with 5 μg/kg dexmedetomidine alone (GD) or associated with 0.3 mg/kg morphine(GDM) intramuscularly (IM). In both groups, anesthetic induction with dose-effect propofol was performed and maintained withisoflurane diluted in 100% oxygen administered through a calibrated vaporizer and appropriate anesthetic system based on the weightof the animal and maintained on spontaneous ventilation. After stabilization of the patient the surgery was started, which lasted 45min. The bitches were evaluated by the Modified Glasgow Scale (GSM), the Melbourne Scale (MS) and the Dobbins Sedation Scale(DS), previously administered MPA (T0) and the others performed in 1h (T1), 2h (T2), 4h (T3), 8h (T4), 12h (T5) and 24h (T6) afterextubation. If the GSM score was greater than the value of 3.3 an analgesic rescue of 0.5 mg/kg of morphine intramuscularly would beadministered. An increase in the scoring of pain scales in both groups can be observed from the T1, with significant difference only ofthe...

Comparison of the effects of maropitant, lidocaine, and dextroketamine administered by the intratesticular route in dogs undergoing elective orchiectomy

Background: Balanced anesthesia achieved with combinations of inhaled and injectable drugs administered systemicallyor in loco-regional anesthetic blocks, is widely used in veterinary medicine. The use of anesthesia and/or local analgesiahas already demonstrated benefits in the performance of elective orchiectomy in different species, there is no literature thatevaluates the use of the maropitant intratesticular route. The present study evaluated the cardiorespiratory variables andanalgesia produced by intratesticular blockade with maropitant, lidocaine, or dextroketamine during the trans-operativeperiod along with the discharge and anesthetic recovery of dogs that underwent elective orchiectomy.Materials, Methods & Results: Used twenty-four dogs from routine elective orchiectomy, considered healthy based onthe results of clinical and hematological tests. The animals were randomly divided into three groups and was applied intratesticularly 2% lidocaine at a dose of 1 mg/kg (GL), 5% dextrocetamina at a dose of 2.5 mg/kg (GC), or 1% maropitantat a dose of 1 mg/kg (GM). Anesthesia induction was performed with propofol (to effect), and stabilization of inhalationalanesthesia was achieved with 1.7 V% of sevoflurane diluted in 100% oxygen administered through a calibrated vaporizerand appropriate anesthetic system based on the animal’s weight, being kept under spontaneous ventilation, After induction, we waited 10 min for stabilization of exhaled anesthetic concentration and then administered one of the treatmentsintratesticularly. After five min from the local block the surgical procedure was started during up to 15 min. Heart rate(HR), respiratory rate (RR), systolic arterial pressure (SAP), diastolic arterial pressure (DAP), mean arterial pressure(MAP), oxygen saturation of hemoglobin (SatO2), end-tidal carbon dioxide partial pressure (EtCO2), end-tidal sevofluraneconcentration...

Infusión continua de dos dosis de fentanila asociada a lidocaína y ketamina para perros femeninos anesthetizados con sevoflurane y continuando ovaryohisterectomía electiva / Continuous infusion of two doses of fentanyl associated with lidocaine and ketamine for female dogs anesthetized with sevoflurane and undergoing elective ovaryohysterectomy / Infusão contínua de duas doses de fentanil associadas à lidocaína e cetamina em fêmeas caninas anestesiadas com sevoflurano e submetidas à ovariohisterectomia eletiva

El objetivo de este trabajo fue evaluar los efectos cardiorrespiratorios de dos dosis de fentanil asociadas a la lidocaína y cetamina en hembras caninas anestesiadas con sevoflurane y sometidas a la ovariohisterectomía electiva. Se utilizaron 18 animales distribuidos aleatoriamente en dos grupos. Los animales del grupo A (GA) recibieron por vía intravenosa un bolus de fentanil de 0,0018 mg/kg y los del grupo B (GB) 0,0036 mg/kg, ambos asociados a lidocaína 3 mg/kg y cetamina 0,6 mg/kg. Inmediatamente después del bolus se realizó la inducción con propofol seguido del inicio de la infusión continua (IC) de fentanil a la dosis de 0,0018 mg/kg/h para el GA y 0,0036 mg/kg/h para GB, ambos asociados a 3 y 0,6 mg/kg/h de lidocaína y cetamina. La anestesia fue mantenida con sevoflurane diluido en oxígeno 100% a 1,5V% a través de vaporizador calibrado que fue ajustado para el mantenimiento del plano anestésico quirúrgico. Los animales fueron colocados en decúbito dorsal y permanecieron bajo ventilación espontánea. Se evaluaron los valores basales (T0), después de la inducción (T1) y 5 (T5), 20 (T20) y 35 (T35) minutos de IC de los siguientes parámetros: frecuencia cardíaca (FC), frecuencia respiratoria (f), presión arterial sistólica (PAS), presión arterial diastólica (PAD) y presión arterial media (PAM), saturación de oxígeno en la hemoglobina (SatO2), presión parcial de dióxido de car

The aim of this study was to evaluate the cardiorespiratory effects of two doses of fentanyl associated with lidocaine and ketamine in canine females anesthetized with sevoflurane and submitted to elective ovariohysterectomy. 18 animals were randomly assigned to two groups. Group A (GA) animals received a loading dose intravenously of fentanyl 0.0018 mg/kg and those of group B (GB) 0.0036 mg/kg, both associated with lidocaine 3 mg/kg and ketamine 0, 6 mg/kg. Immediately after the loading dose, induction with propofol was realized followed by continuous infusion (CI) of fentanyl at the dose of 0.0018 mg/kg/h for GA and 0.0036 mg/kg/h for GB, both associated to 3 and 0.6 mg/kg/h of lidocaine and ketamine. The anesthesia was maintained with sevoflurane diluted in 100% oxygen at 1.5% by a calibrated vaporizer that was adjusted for the maintenance of the surgical anesthetic plane. The animals were placed in dorsal decubitus position and remained under spontaneous ventilation. Was evaluated the baseline values (T0), after induction (T1) and 5 (T5), 20 (T20) and 35 (T35) minutes of following parameters: heart rate (HR), respiratory rate (f), systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean blood pressure (MAP), oxygen saturation in hemoglobin (SatO2), partial carbon dioxide (EtCO2) pressure and expired sevoflurane (EtSevo). Statistical analysis was performed th

O objetivo deste trabalho foi avaliar os efeitos cardiorrespiratórios de duas doses de fentanil associadas à lidocaína e cetamina em fêmeas caninas anestesiadas com sevoflurano e submetidas à ovariohisterectomia eletiva. Foram utilizados 18 animais distribuídos aleatoriamente em dois grupos. Os animais do grupo A (GA) receberam pela via intravenosa um bolus de fentanil de 0,0018 mg/kg e os do grupo B (GB) 0,0036 mg/kg, ambos associados a lidocaína 3 mg/kg e cetamina 0,6 mg/kg. Imediatamente após o bolus realizou-se a indução com propofol seguido do início da infusão contínua (IC) de fentanil na dose de 0,0018 mg/kg/h para o GA e 0,0036 mg/kg/h para GB, ambos associados a 3 e 0,6 mg/kg/h de lidocaína e cetamina. A anestesia foi mantida com sevoflurano diluído em oxigênio 100% a 1,5V% através de vaporizador calibrado que foi ajustado para a manutenção do plano anestésico cirúrgico. Os animais foram posicionados em decúbito dorsal e permaneceram sob ventilação espontânea. Foram avaliados os valores basais (T0), após indução (T1) e 5 (T5), 20 (T20) e 35 (T35) minutos de IC dos seguintes parâmetros: frequência cardíaca (FC), frequência respiratória (f), pressão arterial sistólica (PAS), diastólica (PAD) e média (PAM), saturação de oxigênio na hemoglobina (SatO2), pressão parcial de dióxido de carbônico (EtCO2) e o sevoflurano expirado (EtSevo). A analise estatística foi realizada at

Avaliação dos efeitos cardiorrespiratórios da dexmedetomidina isolada e associada à morfina em cadelas submetidas à ovariossalpingohisterectomia eletiva sob anestesia geral inalatória / Evaluation of cardiorespiratory effects of dexmedetomidine isolated and associated with morphine in bitches submitted to elective ovariossalpingohisterectomy under general inhalation anesthesia

Background: Elective ovariossalpingohysterectomy is one of the most accomplished surgeries in veterinary practice, presenting moderate degree of pain. Aiming at balanced anesthesia, α2-agonists have been increasingly used, with dexmedetomidine being characterized by its sympatholytic, sedative, analgesic properties and synergism with opioids, benzodiazepines and other drugs. The objective of this study was to evaluate the effects of dexmedetomidine alone and associated with morphine under the cardiovascular, respiratory and body temperature variables in the pre and trans-operative periods in bitches submitted to elective ovariossalpingohisterectomy under general inhalation anesthesia.Materials, Methods & Results: Sixteen bitches were used in this study, which were submitted to elective ovariossalpingohisterectomy, all of which were clinically healthy based on clinical and hematological results. The animals were randomized into two groups, in which intramuscular dexmedetomidine alone and 5 µg/kg (DG) and 0.3 mg/kg morphine (GDM). In both groups, anesthesia was induced with propofol administered and maintained with isoflurane diluted in 100% oxygen administered through a calibrated vaporizer and appropriate anesthetic system based on the weight of the animal and kept under spontaneous ventilation. After stabilization of the patient, the surgical procedure started, which lasted 45 min. The parameters evaluated were heart rate (HR), respiratory rate (ƒ), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), body temperature (TºC), expired isoflurane concentration , partial carbon dioxide gas pressure (ETCO2 ) and oxygen saturation in hemoglobin (SatO2 ), which were measured before and after the application of preanesthetic medication and at specific surgical times:[...]

Evaluation of postoperative residual analgesia of two solutions used for local anesthesia by tumescence in bitches who underwent a unilateral mastectomy / Avaliação da analgesia residual pós-operatória de duas soluções utilizadas para anestesia local por tumescência em cadelas submetidas à mastectomia unilateral

Background: Breast tumors are common and require surgical treatment. A mastectomy causes edema, inflammation, and moderate to severe pain; therefore, analgesics should be used efficiently during the trans and postoperative periods. Tumescence anesthesia has been studied in veterinary medicine; however, there is limited literature on the comparison of the constituents of the different solutions and the most suitable protocol. The objective of this study was to evaluate the residual postoperative analgesia of two solutions through the Melbourne, Modified Glasgow for dogs (EGM), and Visual Analogue (EVA) scales in bitches who underwent a unilateral mastectomy.Materials, Methods & Results: Twelve bitches, weighing between 5 and 15 kg and aged between 5 and 13 years old, were included in the study. To determine if the animals were medically fit to undergo the procedure, they were evaluated by clinical examination, laboratory testing (complete blood count, serum biochemistry [urea, creatinine and alanine aminotransferase/ALT], and imaging (thorax x-ray and abdominal ultrasonography). Patients were randomly divided into two groups. One group received a lidocaine-containing tumescent solution (GTL) that consisted of 210 mL of lactated Ringer’s solution (at a temperature between 8 and 12°C), 40 mL of 2% lidocaine hydrochloride without vasoconstrictor, and 0.5 mL of adrenaline (1 mg/mL). The other group received ropivacaine (GTR) with 233.3 mL of lactated Ringer’s solution (at the same temperature as the previous group’s), 16.7 mL of ropivacaine (7.5 mg/mL), and 0.5 mL of adrenaline (1 mg/mL). Both groups received a combination of acepromazine (0.04 mg/kg) and meperidine (2 mg/kg) as preanesthetic medication (MPA), followed by induction using propofol (to effect) and maintenance using isoflurane. The solutions were infused subcutaneously (SC) 5 min after stabilization of the anesthetic plane.[...]

Avaliação dos efeitos cardiorrespiratórios da dexmedetomidina isolada e associada à morfina em cadelas submetidas à ovariossalpingohisterectomia eletiva sob anestesia geral inalatória / Evaluation of cardiorespiratory effects of dexmedetomidine isolated and associated with morphine in bitches submitted to elective ovariossalpingohisterectomy under general inhalation anesthesia

Background: Elective ovariossalpingohysterectomy is one of the most accomplished surgeries in veterinary practice, presenting moderate degree of pain. Aiming at balanced anesthesia, α2-agonists have been increasingly used, with dexmedetomidine being characterized by its sympatholytic, sedative, analgesic properties and synergism with opioids, benzodiazepines and other drugs. The objective of this study was to evaluate the effects of dexmedetomidine alone and associated with morphine under the cardiovascular, respiratory and body temperature variables in the pre and trans-operative periods in bitches submitted to elective ovariossalpingohisterectomy under general inhalation anesthesia.Materials, Methods & Results: Sixteen bitches were used in this study, which were submitted to elective ovariossalpingohisterectomy, all of which were clinically healthy based on clinical and hematological results. The animals were randomized into two groups, in which intramuscular dexmedetomidine alone and 5 µg/kg (DG) and 0.3 mg/kg morphine (GDM). In both groups, anesthesia was induced with propofol administered and maintained with isoflurane diluted in 100% oxygen administered through a calibrated vaporizer and appropriate anesthetic system based on the weight of the animal and kept under spontaneous ventilation. After stabilization of the patient, the surgical procedure started, which lasted 45 min. The parameters evaluated were heart rate (HR), respiratory rate (ƒ), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), body temperature (TºC), expired isoflurane concentration , partial carbon dioxide gas pressure (ETCO2 ) and oxygen saturation in hemoglobin (SatO2 ), which were measured before and after the application of preanesthetic medication and at specific surgical times:[...](AU)

Evaluation of postoperative residual analgesia of two solutions used for local anesthesia by tumescence in bitches who underwent a unilateral mastectomy / Avaliação da analgesia residual pós-operatória de duas soluções utilizadas para anestesia local por tumescência em cadelas submetidas à mastectomia unilateral

Background: Breast tumors are common and require surgical treatment. A mastectomy causes edema, inflammation, and moderate to severe pain; therefore, analgesics should be used efficiently during the trans and postoperative periods. Tumescence anesthesia has been studied in veterinary medicine; however, there is limited literature on the comparison of the constituents of the different solutions and the most suitable protocol. The objective of this study was to evaluate the residual postoperative analgesia of two solutions through the Melbourne, Modified Glasgow for dogs (EGM), and Visual Analogue (EVA) scales in bitches who underwent a unilateral mastectomy.Materials, Methods & Results: Twelve bitches, weighing between 5 and 15 kg and aged between 5 and 13 years old, were included in the study. To determine if the animals were medically fit to undergo the procedure, they were evaluated by clinical examination, laboratory testing (complete blood count, serum biochemistry [urea, creatinine and alanine aminotransferase/ALT], and imaging (thorax x-ray and abdominal ultrasonography). Patients were randomly divided into two groups. One group received a lidocaine-containing tumescent solution (GTL) that consisted of 210 mL of lactated Ringers solution (at a temperature between 8 and 12°C), 40 mL of 2% lidocaine hydrochloride without vasoconstrictor, and 0.5 mL of adrenaline (1 mg/mL). The other group received ropivacaine (GTR) with 233.3 mL of lactated Ringers solution (at the same temperature as the previous groups), 16.7 mL of ropivacaine (7.5 mg/mL), and 0.5 mL of adrenaline (1 mg/mL). Both groups received a combination of acepromazine (0.04 mg/kg) and meperidine (2 mg/kg) as preanesthetic medication (MPA), followed by induction using propofol (to effect) and maintenance using isoflurane. The solutions were infused subcutaneously (SC) 5 min after stabilization of the anesthetic plane.[...](AU)

Different Dissociative Anesthesia Protocols For Coatis (Nasua Nasua)

This study evaluated the effects of various combinations of dissociative drugs, tranquilizers, and sedatives in four male coatis (Nasua nasua) with an average age and weight of 4.8 ± 1.3 years and 6.02 ± 0.56 kg, respectively. We studied six groups with different anesthetic protocols: CX (10 mg/kg ketamine-S and 2 mg/kg xylazine); CXA (10 mg/kg ketamine-S, 2 mg/kg xylazine, and 0.04 mg/kg atropine); CM (10 mg/kg ketamine-S and 0.5 mg/kg midazolam); CMAc (10 mg/kg ketamine-S, 0.5 mg/kg of midazolam, and 1 mg/kg acepromazine); C(20)M (20 mg/kg of ketamine-S and 0.5 mg/kg midazolam); and TZ (7 mg/kg of tiletamine and zolazepam), with a 30-day interval between the completion of each procedure. We evaluated heart rate (HR), respiratory rate (RR), saturation of oxyhemoglobin (SpO2), body temperature T (°C), and muscle relaxation, using a scoring system. There was no statistical difference for SpO2. T (°C) was progressively reduced over time in all groups (p< 0.0001). The groups CM, C(20)M, CMAc, and TZ demonstrated the greatest effect on HR and T (°C). With respect to respiratory rate reduction, groups CM and TZ showed similar results. The best degree of muscle relaxation was observed in groups CM and C(20)M. We concluded that the combination of 20 mg/kg ketamine and midazolam 0. 5 mg/kg (group C(20)M) is an option for dissociative anesthesia of coatis, producing smaller changes in T (°C) and HR, and promoting better muscular relaxation when compared to other combinations.(AU)

Anesthesia In A Giant Armadillo (Priodontes Maximus) For Femoral Fracture Fixation

An adult female armadillo (Priodontes maximus) weighing 32.4 kg was admitted to the Veterinary Hospital of the Federal University of Mato Grosso (HOVET-UFMT) - Campus Cuiabá. Results of clinical and complementary examinations revealed a complete oblique fracture of the middle third of the femur. As a pre-anesthetic regimen, a combination of ketamine (10 mg/kg) and midazolam (0.2 mg/kg) was administered, and analgesic support with morphine (0.5 mg/kg) and dipyrone (25 mg/kg) was provided. This was followed by induction of anesthesia through a facial mask and its maintenance with sevoflurane diluted in 100% oxygen by means of a calibrated vaporizer. The anesthetic system used was suitable for the weight of the animal; the animal breathed spontaneously. During the procedure, the animal had stable cardiovascular and respiratory parameters, and had a fast and satisfactory recovery.(AU)

Different Dissociative Anesthesia Protocols For Coatis (Nasua Nasua)

This study evaluated the effects of various combinations of dissociative drugs, tranquilizers, and sedatives in four male coatis (Nasua nasua) with an average age and weight of 4.8 ± 1.3 years and 6.02 ± 0.56 kg, respectively. We studied six groups with different anesthetic protocols: CX (10 mg/kg ketamine-S and 2 mg/kg xylazine); CXA (10 mg/kg ketamine-S, 2 mg/kg xylazine, and 0.04 mg/kg atropine); CM (10 mg/kg ketamine-S and 0.5 mg/kg midazolam); CMAc (10 mg/kg ketamine-S, 0.5 mg/kg of midazolam, and 1 mg/kg acepromazine); C(20)M (20 mg/kg of ketamine-S and 0.5 mg/kg midazolam); and TZ (7 mg/kg of tiletamine and zolazepam), with a 30-day interval between the completion of each procedure. We evaluated heart rate (HR), respiratory rate (RR), saturation of oxyhemoglobin (SpO2), body temperature T (°C), and muscle relaxation, using a scoring system. There was no statistical difference for SpO2. T (°C) was progressively reduced over time in all groups (p< 0.0001). The groups CM, C(20)M, CMAc, and TZ demonstrated the greatest effect on HR and T (°C). With respect to respiratory rate reduction, groups CM and TZ showed similar results. The best degree of muscle relaxation was observed in groups CM and C(20)M. We concluded that the combination of 20 mg/kg ketamine and midazolam 0. 5 mg/kg (group C(20)M) is an option for dissociative anesthesia of coatis, producing smaller changes in T (°C) and HR, and promoting better muscular relaxation when compared to other combinations.

Anesthesia In A Giant Armadillo (Priodontes Maximus) For Femoral Fracture Fixation

An adult female armadillo (Priodontes maximus) weighing 32.4 kg was admitted to the Veterinary Hospital of the Federal University of Mato Grosso (HOVET-UFMT) - Campus Cuiabá. Results of clinical and complementary examinations revealed a complete oblique fracture of the middle third of the femur. As a pre-anesthetic regimen, a combination of ketamine (10 mg/kg) and midazolam (0.2 mg/kg) was administered, and analgesic support with morphine (0.5 mg/kg) and dipyrone (25 mg/kg) was provided. This was followed by induction of anesthesia through a facial mask and its maintenance with sevoflurane diluted in 100% oxygen by means of a calibrated vaporizer. The anesthetic system used was suitable for the weight of the animal; the animal breathed spontaneously. During the procedure, the animal had stable cardiovascular and respiratory parameters, and had a fast and satisfactory recovery.

Firocoxib on hematological and biochemical parameters and anesthesia propofol dose in dogs

This study evaluated the hematological and biochemical changes, the safety, as well as the change in propofol dose required for anesthesia induction in dogs, pretreated or not, in response to a single dose or continuous use of the nonsteroidal antiinflammatory drug (NSAID) firocoxib. Thirty animals mean weighing 8.1 kg and mean aged 3.38 years were included. The animals were then divided into groups: Group I (GI) did not receive firocoxib, Group II (GII) received a single dose (5 mg/kg) 90 minutes before anesthesia induction, and Group III (GIII) received the same dose (5 mg/kg) for 40 consecutive days before induction of anesthesia with propofol. Hematological and biochemical evaluations were conducted. The times of collection were defined by the mean time of maximum concentration and constant concentration in the blood of the NSAID. All variables remained within the reference range, but averages differed statistically between GII and GIII, according to the Tukey test (p < 0.05). The average doses of propofol were 6.6 mg/kg, 6.1 mg/kg, and 7.8 mg/kg for GI, GII, and GIII, respectively. Hematological and biochemical changes and increased propofol dose for induction of anesthesia in GIII, despite this can be safely used in association with propofol at the time of anesthesic induction; which must be taken into account because it may also change doses of the drug in other anesthetic methods.(AU)