Brazilian Journal of Anesthesiology
https://bjan-sba.org/article/doi/10.1016/j.bjane.2016.08.001
Brazilian Journal of Anesthesiology
Scientific Article

A prospective, randomized, double-blinded control study on comparison of tramadol, clonidine and dexmedetomidine for post spinal anesthesia shivering

Estudo prospectivo randômico, duplo-cego e controlado comparando tramadol, clonidina e dexmedetomidina para tremores pós-raquianestesia

Rajagopalan Venkatraman; Krishnamoorthy Karthik; Anand Pushparani; Annadurai Mahalakshmi

http://dx.doi.org/10.1016/j.bjane.2016.08.001 Braz J Anesthesiol, vol.68, n1, p.42-48, 2018
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Abstract

Abstract Introduction Shivering, a common intraoperative problem under spinal anesthesia increases the oxygen consumption considerably and is uncomfortable and distressing to the patient, anesthesiologist as well as surgeon. The present study was designed to explore the effectiveness of tramadol, clonidine and dexmedetomidine in the treatment of post spinal anesthesia shivering and to look for their adverse effects. Methods This prospective, randomized, double blinded control study was done on 90 patients who developed shivering under spinal anesthesia. They were randomly allocated into three groups with Group T receiving tramadol 1 mg.kg-1, Group C getting clonidine 1 mcg.kg-1 and Group D patients receiving dexmedetomidine 0.5 mcg.kg-1. The time taken to control shivering, recurrence rate, hemodynamic variables, sedation score and adverse effects were observed. Results Dexmedetomidine was faster in the control of shivering in 5.7 ± 0.79 minutes (min) whereas tramadol took 6.76 ± 0.93 min and clonidine was slower with 9.43 ± 0.93 min. The recurrence rate was much lower in the dexmedetomidine group with 3.3% than for clonidine (10%) and tramadol (23.3%) group. The sedation achieved with dexmedetomidine was better than clonidine and tramadol. The tramadol group had more cases of vomiting (four) and dexmedetomidine group had six cases of hypotension and two cases of bradycardia. Two of the clonidine patients encountered bradycardia and hypotension. Conclusion Dexmedetomidine is better than tramadol and clonidine in the control of shivering because of its faster onset and less recurrence rate. Though complications are encountered in the dexmedetomidine group, they are treatable.

Keywords

Clonidine, Dexmedetomidine, Hypothermia, Shivering, Spinal anesthesia, Tramadol

Resumo

Resumo Introdução O tremor, problema comum no período intraoperatório sob raquianestesia, aumenta consideravelmente o consumo de oxigênio, além de ser desconfortável e angustiante para o paciente, o anestesiologista e o cirurgião. O presente estudo foi concebido para explorar a eficácia de tramadol, clonidina e dexmedetomidina no tratamento de tremores pós-raquianestesia e observar seus efeitos adversos. Métodos Este estudo prospectivo, randômico, controlado e duplo-cego foi feito com 90 pacientes que desenvolveram tremores sob raquianestesia. Os pacientes foram randomicamente alocados em três grupos para receber 1 mg.kg-1 de tramadol (Grupo T), 1 mcg.kg-1 de clonidina (Grupo C) e 0,5 mcg.kg-1 de dexmedetomidina (Grupo D). O tempo necessário para controlar os tremores, a taxa de recorrência, as variáveis hemodinâmicas, os níveis de sedação e os efeitos adversos foram registrados. Resultados Dexmedetomidina foi mais rápida para controlar os tremores, com tempo de 5,7 ± 0,79 minutos (min); o tempo de tramadol foi de 6,76 ± 0,93 min; clonidina foi mais lenta, com tempo de 9,43 ± 0,93 min. A taxa de recorrência foi muito menor no grupo dexmedetomidina (3,3%) do que nos grupos clonidina (10%) e tramadol (23,3%). A sedação obtida com dexmedetomidina foi melhor do que a obtida com clonidina e tramadol. O grupo tramadol teve mais casos de vômito (quatro); o grupo dexmedetomidina teve seis casos de hipotensão e dois casos de bradicardia. Dois pacientes do grupo clonidina apresentaram bradicardia e hipotensão. Conclusão Dexmedetomidina foi melhor do que tramadol e clonidina para o controle de tremores devido ao seu início de ação mais rápido e à taxa de recorrência mais baixa. Embora complicações tenham sido observadas no grupo dexmedetomidina, elas foram tratáveis.

Palavras-chave

Clonidina, Dexmedetomidina, Hipotermia, Tremor, Raquianestesia, Tramadol

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