Brazilian Journal of Anesthesiology
https://bjan-sba.org/article/doi/10.1016/j.bjane.2018.01.011
Brazilian Journal of Anesthesiology
Scientific Article

Ketamine as an adjunct to bupivacaine in infra-orbital nerve block analgesia after cleft lip repair

Cetamina como adjuvante de bupivacaína em bloqueio do nervo infraorbitário para analgesia após correção de lábio leporino

Hala Saad Abdel-Ghaffar; Nawal Gad Elrab Abdel-Aziz; Mohamed Fathy Mostafa; Ahmed Kamal Osman; Nehad Mohamed Thabet

http://dx.doi.org/10.1016/j.bjane.2018.01.011 Braz J Anesthesiol, vol.68, n3, p.266-273, 2018
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Abstract

Abstract Objectives: We conducted this study to investigate the safety and analgesic efficacy of the addition of Ketamine to Bupivacaine in bilateral extra-oral infra-orbital nerve block in children undergoing cleft lip surgeries. Methods: Sixty patients were randomly allocated into two groups (n = 30), Group B received infra-orbital nerve block with 2 mL of 0.25% Bupivacaine and Group BK received 0.5 mg.kg-1 Ketamine for each side added to 1 mL of 0.5% Bupivacaine solution diluted up to 2 mL solution to 0.25% Bupivacaine concentration. Assessment parameters included; hemodynamics, recovery time, time to first oral intake, postoperative Faces Legs Activity Cry Consolability (FLACC) scores, Four-point Agitation scores, analgesic consumption and adverse effects. Results: Patients in Group BK showed lower postoperative FLACC scores during all recorded time points (p < 0.0001). Two patients in Group BK versus 12 in Group B requested for postoperative rescue analgesia (p < 0.001). There were no differences between groups in time, minutes (min), to first request for rescue analgesia. Patients in Group BK reported lower analgesic consumption (366.67 ± 45.67 vs. 240.0 ± 0.0 mg, p < 0.04). The time to first oral intake was significantly reduced in Group BK (87.67 ± 15.41 vs. 27.33 ± 8.68 min, p < 0.001). Lower postoperative Agitation scores were recorded in Group BK patients that reached a statistical significance at 45 min (0.86 ± 0.11 vs. 0.46 ± 0.16, p < 0.04) and in the first hour (h) postoperatively (1.40 ± 0.17 vs. 0.67 ± 0.14, p < 0.003). Higher parent satisfaction scores were recorded in Group BK (p < 0.04) without significant adverse effects. Conclusions: The addition of Ketamine to Bupivacaine has accentuated the analgesic efficacy of infra-orbital nerve block in children undergoing cleft lip repair surgeries.

Keywords

Postoperative pain, Cleft lip, Local analgesia, Infra-orbital nerve, Bupivacaine, Ketamine

Resumo

Resumo Objetivos: Realizamos este estudo para avaliar a segurança e eficácia da analgesia com a adição de cetamina à bupivacaína em bloqueio do nervo infraorbitário, bilateral e extraoral, em crianças submetidas à cirurgia de lábio leporino. Métodos: Foram randomicamente alocados 60 pacientes em dois grupos (n = 30): o Grupo B recebeu bloqueio do nervo infraorbitário com bupivacaína a 0,25% (2 mL) e o Grupo BC recebeu bloqueio com cetamina (0,5 mg.kg-1) em cada lado, mais a adição de 1 mL de solução de bupivacaína a 0,5% diluída até 2 mL da concentração a 0,25%. Os parâmetros de avaliação incluíram: hemodinâmica, tempo de recuperação, tempo até a primeira ingestão oral, escores da escala FLACC (que avalia a expressão facial [Face], os movimentos das pernas [Legs], a atividade [Activity], o choro [Cry] e a consolabilidade [Consolability]), escores de agitação em escala de quatro pontos, consumo de analgésicos e efeitos adversos no pós-operatório. Resultados: Os pacientes do Grupo BC apresentaram escores FLACC mais baixos em todos os momentos mensurados no pós-operatório (p < 0,0001). Dois pacientes do Grupo BC versus 12 do Grupo B solicitaram analgesia de resgate no pós-operatório (p < 0,001). Não houve diferenças entre os grupos em relação ao tempo até a primeira solicitação de analgesia de resgate. Os pacientes do Grupo BC relataram consumo menor de analgésicos (366,67 ± 45,67 vs. 240,0 ± 0,0 mg, p < 0,04). O tempo em minutos (min) até a primeira ingestão oral foi significativamente reduzido no Grupo BC (87,67 ± 15,41 vs. 27,33 ± 8,68 min, p < 0,001). Escores mais baixos de agitação no pós-operatório foram registrados para os pacientes do Grupo BC, com significância estatística no tempo de 45 min (0,86 ± 0,11 vs. 0,46 ± 0,16; p < 0,04) e na primeira hora de pós-operatório (1,40 ± 0,17 vs. 0,67 ± 0,14; p < 0,003). Índices mais altos de satisfação dos pais foram registrados no Grupo BC (p < 0,04), sem efeitos adversos significativos. Conclusões: A adição de cetamina à bupivacaína acentuou a eficácia analgésica do bloqueio do nervo infraorbitário em crianças submetidas à cirurgia de correção de lábio leporino.

Palavras-chave

Dor pós-operatória, Lábio leporino, Analgesia local, Nervo infraorbitário, Bupivacaína, Cetamina

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