Brazilian Journal of Anesthesiology
https://bjan-sba.org/article/doi/10.1590/S0034-70942012000500007
Brazilian Journal of Anesthesiology
Scientific Article

Incidência de tremores após cesarianas sob raquianestesia com ou sem sufentanil intratecal: estudo aleatório

Incidence of shivering after cesarean section under spinal anesthesia with or without intrathecal sufentanil: a randomized study

Giovani de Figueiredo Locks

http://dx.doi.org/10.1590/S0034-70942012000500007 Braz J Anesthesiol, vol.62, n5, p.680-684, 2012
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Resumo

JUSTIFICATIVA E OBJETIVO: Tremores são causa de desconforto e insatisfação das pacientes submetidas à cesariana. O objetivo deste estudo foi analisar o impacto do uso de sufentanil intratecal na incidência de tremores após cesarianas. PACIENTES E MÉTODOS: Em um ensaio clínico prospectivo aleatório encoberto, foram incluídas no estudo gestantes submetidas à cesariana sob raquianestesia. Foram excluídas as gestantes em trabalho de parto, febris, obesas, com doença hipertensiva da gravidez, com falha do bloqueio anestésico ou complicação cirúrgica. As pacientes foram distribuídas aleatoriamente em dois grupos. No Grupo I foram administrados 10 mg de bupivacaína 0,5% hiperbárica associados a 80 mcg de morfina e 2,5 mcg de sufentanil. No Grupo II foram administrados 10 mg de bupivacaína 0,5% hiperbárica associados a 80 mcg de morfina. Na Sala de Recuperação Pós-Anestésica as pacientes foram avaliadas quanto à presença de sinais de tremores por observador que desconhecia o grupo ao qual a paciente havia sido alocada. RESULTADOS: A amostra constou de 80 pacientes. Em ambos os grupos houve diminuição na temperatura axilar das pacientes após a cesariana (p < 0,001). Essa diminuição não se mostrou diferente entre os grupos (p < 0,21). No Grupo I a incidência de tremores foi de 13/40 (32,5%) pacientes e no Grupo II foi de 25/40 (62,5%) (p < 0,007) - Risco Relativo 0,53 (IC 95% 0,32-0,87). CONCLUSÕES: Sugere-se que a adição de sufentanil à bupivacaína hiperbárica e morfina durante raquianestesia para cesariana proporciona diminuição na incidência de tremores no período pós-operatório imediato.

Palavras-chave

ANALGÉSICOS, Opióides, sufentanil, CIRURGIA, cesárea, COMPLICAÇÕES, Tremores, TÉCNICAS ANESTÉSICAS, Regional, subaracnoidea

Abstract

BACKGROUND AND OBJECTIVES: Shivering is a cause of discomfort and dissatisfaction in patients undergoing cesarean section. The objective of this study paper was to assess the impact of intrathecal administration of sufentanil on the incidence of shivering after cesarean section. METHOD: In a prospective blinded, randomized clinical trial, pregnant women undergoing cesarean section under spinal anesthesia were enrolled. Pregnant women in labor, febrile, obese, with pregnancy-induced hypertension, anesthetic block failure or surgical complications were excluded. Patients were randomly assigned to two groups. In Group I, 10 mg of 0.5% hyperbaric bupivacaine combined with 80 mcg of morphine and 2.5 mcg of sufentanil were administered. In Group II, 10 mg of 0.5% hyperbaric bupivacaine combined with 80 mcg of morphine were administered. In the post-anesthesia care unit, patients were evaluated for signs of shivering by an investigator blinded to the patient's group allocation. RESULTS: The sample consisted of 80 patients. In both groups there was a decrease in axillary temperature of patients after cesarean section (p < 0.001). This decrease was not different between groups (p < 0.21). In Group I, the incidence of tremor was 32.5% (13/40) and in Group II it was 62.5% (25/40) (p < 0.007); RR 0.53 (CI 95% 0.32-0.87). CONCLUSIONS: It has been suggested that the addition of sufentanil to hyperbaric bupivacaine and morphine during spinal anesthesia for cesarean section provides a decrease in the incidence of shivering in the immediate postoperative period.

Keywords

Cesarean Section, Anesthesia, Spinal, Shivering, Sufentanil

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