The effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trial

Background and objectives: Hypothermia occurs in about 60% of patients under anesthesia and is generally not managed properly during short lasting surgical procedures. Hypothermia is associated with adverse clinical outcomes. The current study is designed to assess the effects of crystalloid warming...

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Main Authors: Mehmet Cantürk, Fusun Karbancioglu Cantürk, Nazan Kocaoğlu, Meltem Hakki
Format: Article
Language:English
Published: Elsevier 2019-01-01
Series:Brazilian Journal of Anesthesiology
Online Access:http://www.sciencedirect.com/science/article/pii/S0104001418301337
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language English
format Article
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author Mehmet Cantürk
Fusun Karbancioglu Cantürk
Nazan Kocaoğlu
Meltem Hakki
spellingShingle Mehmet Cantürk
Fusun Karbancioglu Cantürk
Nazan Kocaoğlu
Meltem Hakki
The effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trial
Brazilian Journal of Anesthesiology
author_facet Mehmet Cantürk
Fusun Karbancioglu Cantürk
Nazan Kocaoğlu
Meltem Hakki
author_sort Mehmet Cantürk
title The effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trial
title_short The effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trial
title_full The effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trial
title_fullStr The effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trial
title_full_unstemmed The effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trial
title_sort effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trial
publisher Elsevier
series Brazilian Journal of Anesthesiology
issn 0104-0014
publishDate 2019-01-01
description Background and objectives: Hypothermia occurs in about 60% of patients under anesthesia and is generally not managed properly during short lasting surgical procedures. Hypothermia is associated with adverse clinical outcomes. The current study is designed to assess the effects of crystalloid warming on maternal and fetal outcomes in patients undergoing elective cesarean section with spinal anesthesia. Methods: In this prospective randomized controlled trial, sixty parturients scheduled for elective cesarean section with spinal anesthesia were randomly allocated to receive crystalloid at room temperature or warmed at 37 °C. Spinal anesthesia was performed at L3–L4 interspace with 10 mg of hyperbaric bupivacaine without adding opioids. Core temperature, shivering, and hemodynamic parameters were measured every minute until 10th minute and 5-min intervals until the end of operation. The primary outcome was maternal core temperature at the end of cesarean section. Results: There was no difference for baseline tympanic temperature measurements but the difference was significant at the end of the operation (p = 0.004). Core temperature was 36.8 ± 0.5 °C at baseline and decreased to 36.3 ± 0.5 °C for isothermic warmed crystalloid group and baseline tympanic core temperature was 36.9 ± 0.4 °C and decreased to 35.8 ± 0.7 °C for room temperature group at the end of the operation. Shivering was observed in 43.3% in the control group. Hemodynamic parameter changes and demographic data were not significant between groups. Conclusions: Isothermic warming crystalloid prevents the decrease in core temperature during cesarean section with spinal anesthesia in full-term parturients. Fetal Apgar scores at first and fifth minute are higher with isothermic warming. Resumo: Justificativa e objetivos: A hipotermia ocorre em cerca de 60% dos pacientes sob anestesia e geralmente não é tratada adequadamente durante procedimentos cirúrgicos de curta duração. A hipotermia está associada a desfechos clínicos adversos. O presente estudo teve como objetivo avaliar os efeitos do aquecimento de cristaloides nas condições maternas e fetais em pacientes submetidas à cesariana eletiva com raquianestesia. Métodos: Neste estudo prospectivo, randômico e controlado, 60 parturientes agendadas para cesárea eletiva com raquianestesia foram distribuídas aleatoriamente para receber cristaloides à temperatura ambiente ou aquecidos a 37 °C. A raquianestesia foi realizada no interespaço L3–L4 com 10 mg de bupivacaína hiperbárica sem adição de opioides. Temperatura central, tremores e parâmetros hemodinâmicos foram medidos a cada minuto até o décimo minuto e em intervalos de 5 min até o final da operação. O desfecho primário foi a temperatura central materna ao final da cesárea. Resultados: Não houve diferença nas mensurações basais da temperatura timpânica, mas a diferença foi significativa no final da operação (p = 0,004). A temperatura central foi de 36,8 ± 0,5 °C na fase basal e diminuiu para 36,3 ± 0,5 °C no grupo com aquecimento isotérmico de cristaloides e a temperatura basal timpânica foi de 36,9 ± 0,4 °C e diminuiu para 35,8 ± 0,7 °C no grupo sem aquecimento das soluções no final da operação. Tremores foram observados em 43,3% no grupo controle. Alterações nos parâmetros hemodinâmicos e dados demográficos não foram significantes entre os grupos. Conclusões: O aquecimento isotérmico de cristaloides previne a redução da temperatura central durante a cesariana com raquianestesia em parturientes a termo. Os escores de Apgar para os fetos no primeiro e quinto minutos são maiores com o aquecimento isotérmico. Keywords: Spinal anesthesia, Warming, Crystalloids, Core temperature, Shivering, Cesarean section, Apgar score, Palavras-chave: Raquianestesia, Aquecimento, Cristaloides, Temperatura central, Tremor, Cesariana, Escore de Apgar
url http://www.sciencedirect.com/science/article/pii/S0104001418301337
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spelling doaj-382091560e3942ad85301e657056b5282020-11-24T23:26:36ZengElsevierBrazilian Journal of Anesthesiology0104-00142019-01-016911319The effects of crystalloid warming on maternal body temperature and fetal outcomes: a randomized controlled trialMehmet Cantürk0Fusun Karbancioglu Cantürk1Nazan Kocaoğlu2Meltem Hakki3Ahi Evran University Training and Research Hospital, Department of Anesthesiology and Reanimation, Kırsehir, Turkey; Corresponding author.Ahi Evran University Training and Research Hospital, Department of Obstetrics and Gynecology, Kırsehir, TurkeyAhi Evran University Training and Research Hospital, Department of Anesthesiology and Reanimation, Kırsehir, TurkeyAhi Evran University Training and Research Hospital, Department of Anesthesiology and Reanimation, Kırsehir, TurkeyBackground and objectives: Hypothermia occurs in about 60% of patients under anesthesia and is generally not managed properly during short lasting surgical procedures. Hypothermia is associated with adverse clinical outcomes. The current study is designed to assess the effects of crystalloid warming on maternal and fetal outcomes in patients undergoing elective cesarean section with spinal anesthesia. Methods: In this prospective randomized controlled trial, sixty parturients scheduled for elective cesarean section with spinal anesthesia were randomly allocated to receive crystalloid at room temperature or warmed at 37 °C. Spinal anesthesia was performed at L3–L4 interspace with 10 mg of hyperbaric bupivacaine without adding opioids. Core temperature, shivering, and hemodynamic parameters were measured every minute until 10th minute and 5-min intervals until the end of operation. The primary outcome was maternal core temperature at the end of cesarean section. Results: There was no difference for baseline tympanic temperature measurements but the difference was significant at the end of the operation (p = 0.004). Core temperature was 36.8 ± 0.5 °C at baseline and decreased to 36.3 ± 0.5 °C for isothermic warmed crystalloid group and baseline tympanic core temperature was 36.9 ± 0.4 °C and decreased to 35.8 ± 0.7 °C for room temperature group at the end of the operation. Shivering was observed in 43.3% in the control group. Hemodynamic parameter changes and demographic data were not significant between groups. Conclusions: Isothermic warming crystalloid prevents the decrease in core temperature during cesarean section with spinal anesthesia in full-term parturients. Fetal Apgar scores at first and fifth minute are higher with isothermic warming. Resumo: Justificativa e objetivos: A hipotermia ocorre em cerca de 60% dos pacientes sob anestesia e geralmente não é tratada adequadamente durante procedimentos cirúrgicos de curta duração. A hipotermia está associada a desfechos clínicos adversos. O presente estudo teve como objetivo avaliar os efeitos do aquecimento de cristaloides nas condições maternas e fetais em pacientes submetidas à cesariana eletiva com raquianestesia. Métodos: Neste estudo prospectivo, randômico e controlado, 60 parturientes agendadas para cesárea eletiva com raquianestesia foram distribuídas aleatoriamente para receber cristaloides à temperatura ambiente ou aquecidos a 37 °C. A raquianestesia foi realizada no interespaço L3–L4 com 10 mg de bupivacaína hiperbárica sem adição de opioides. Temperatura central, tremores e parâmetros hemodinâmicos foram medidos a cada minuto até o décimo minuto e em intervalos de 5 min até o final da operação. O desfecho primário foi a temperatura central materna ao final da cesárea. Resultados: Não houve diferença nas mensurações basais da temperatura timpânica, mas a diferença foi significativa no final da operação (p = 0,004). A temperatura central foi de 36,8 ± 0,5 °C na fase basal e diminuiu para 36,3 ± 0,5 °C no grupo com aquecimento isotérmico de cristaloides e a temperatura basal timpânica foi de 36,9 ± 0,4 °C e diminuiu para 35,8 ± 0,7 °C no grupo sem aquecimento das soluções no final da operação. Tremores foram observados em 43,3% no grupo controle. Alterações nos parâmetros hemodinâmicos e dados demográficos não foram significantes entre os grupos. Conclusões: O aquecimento isotérmico de cristaloides previne a redução da temperatura central durante a cesariana com raquianestesia em parturientes a termo. Os escores de Apgar para os fetos no primeiro e quinto minutos são maiores com o aquecimento isotérmico. Keywords: Spinal anesthesia, Warming, Crystalloids, Core temperature, Shivering, Cesarean section, Apgar score, Palavras-chave: Raquianestesia, Aquecimento, Cristaloides, Temperatura central, Tremor, Cesariana, Escore de Apgarhttp://www.sciencedirect.com/science/article/pii/S0104001418301337