Brazilian Journal of Anesthesiology
https://bjan-sba.org/article/doi/10.1016/j.bjane.2013.07.003
Brazilian Journal of Anesthesiology
Scientific Article

Comparison of bolus and continuous infusion of esmolol on hemodynamic response to laryngoscopy, endotracheal intubation and sternotomy in coronary artery bypass graft

Comparação de esmolol em bolus e infusão contínua na resposta hemodinâmica à laringoscopia, intubação orotraqueal e esternotomia em cirurgia de revascularização coronária

Esra Mercanooglu Efe; Basak Atabey Bilgin; Zekeriyya Alanoglu; Murat Akbaba; Cigdem Denker

http://dx.doi.org/10.1016/j.bjane.2013.07.003 Braz J Anesthesiol, vol.64, n4, p.247-252, 2014
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Abstract

BACKGROUND AND OBJECTIVE: The aim of this randomized, prospective and double blinded study is to investigate effects of different esmolol use on hemodynamic response of laryngoscopy, endotracheal intubation and sternotomy in coronary artery bypass graft surgery. METHODS: After approval of local ethics committee and patients' written informed consent, 45 patients were randomized into three groups equally. In Infusion Group; from 10 min before intubation up to 5th minute after sternotomy, 0.5 mg/kg/min esmolol infusion, in Bolus Group; 2 min before intubation and sternotomy 1.5 mg/kg esmolol IV bolus and in Control Group; %0.9 NaCl was administered. All demographic parameters were recorded. Heart rate and blood pressure were recorded before infusion up to anesthesia induction in every minute, during endotracheal intubation, every minute for 10 minutes after endotracheal intubation and before, during and after sternotomy at first and fifth minutes. RESULTS: While area under curve (AUC) (SAP × time) was being found more in Group B and C than Group I, AUC (SAP × T int and T st) and AUC (SAP × T2) was found more in Group B and C than Group I (p < 0.05). Moreover AUC (HR × T st) was found less in Group B than Group C but no significant difference was found between Group B and Group I. CONCLUSION: This study highlights that esmolol infusion is more effective than esmolol bolus administration on controlling systolic arterial pressure during endotracheal intubation and sternotomy in CABG surgery.

Keywords

Esmolol, Laryngoscopy, Endotracheal intubation, Sternotomy hemodynamics, Coronary artery, Bypass graft surgery

Resumo

JUSTIFICATIVA E OBJETIVO: o objetivo deste estudo prospectivo, randômico e duplo-cego foi investigar os efeitos do uso diferente de esmolol na resposta hemodinâmica à laringoscopia, intubação orotraqueal e esternotomia em cirurgia de revascularização coronária. MÉTODOS: após obter a aprovação do Comitê de Ética local e consentimento informado assinado pelos pacientes, 45 pacientes foram randomicamente divididos em três grupos. O Grupo I (infusão) recebeu 0,5 mg/kg/min de esmolol em infusão a partir de 10 min antes da intubação até 5 minutos após a esternotomia; o Brupo B (bolus) recebeu 1,5 mg/kg de esmolol em bolus IV a partir de 2 min antes da intubação e esternotomia; o grupo C (controle) recebeu NaCl a 0,9%. Todos os parâmetros demográficos foram registados. Os valores de frequência cardíaca e pressão arterial foram registrados desde antes da infusão até a indução da anestesia a cada minuto, durante a intubação endotraqueal, a cada minuto durante 10 min após a intubação endotraqueal e antes, durante e após a esternotomia no primeiro e quinto minutos. RESULTADOS: enquanto a área sob a curva (ASC) (SAP × tempo) foi maior nos grupos B e C que no Grupo I, a ASC (SAP × T int e T st) e ASC (SAP × T2) foram maiores nos grupos B e C que no Grupo I (p < 0,05). Além disso, a ASC (FC × T st)) foi menor no Grupo B que no Grupo C, mas não houve diferença significante entre os grupos B e I. CONCLUSÃO: este estudo destaca que a administração de esmolol em infusão é mais eficaz que em bolus para controlar a pressão arterial sistólica durante a intubação endotraqueal e esternotomia em CRC.

Palavras-chave

Esmolol, Laringoscopia, Intubação endotraqueal, Hemodinâmica em esternotomia, Artéria coronária, Cirurgia de revascularização

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