Low-dose intravenous dexmedetomidine reduces shivering following cesarean delivery: a randomized controlled trial |
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| Affiliation: | 1. Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA;2. Department of Anesthesiology, Nanjing Maternal and Child Health Care Hospital, Nanjing Medical University, Nanjing, China;3. Department of Anesthesiology, Albany Medical Center, Albany Medical College, Albany, NY, USA;1. Department of Anesthesia and Surgical Intensive Care, Mansoura University Hospitals, Mansoura, Egypt;2. Department of Obstetrics and Gynecology, Mansoura University Hospitals, Mansoura, Egypt;1. Department of Anesthesiology, University of North Carolina, Chapel Hill, NC, USA;2. Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, USA;1. Anesthesiology Department, “Alexandra” General Hospital of Athens, Greece;2. 1st Departement of Obstetrics & Gynecology, University of Athens Medical School, “Alexandra” General Hospital of Athens, Greece;1. Department of Anesthesiology, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, Japan;2. Department of Anesthesiology, Tohoku Kosai Hospital, 2-3-11, Kokubuncho, Aoba-ku, Sendai, Miyagi, Japan;3. Department of Anesthesiology, Kesennuma City Hospital, 184 Tanaka, Kesennuma, Miyagi, Japan;1. Department of Anesthesiology, Nagoya University Graduate School of Medicine, Nagoya, Japan;2. Division of Anesthesia, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan;3. Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan;1. Department of Anesthesiology, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand;2. Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand;3. Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, WA, USA |
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| Abstract: | BackgroundIntravenous dexmedetomidine 30 µg reduces shivering after cesarean delivery but can result in sedation and dry mouth. We hypothesized that prophylactic administration of 10 µg of IV dexmedetomidine would reduce the patient-reported severity of shivering after cesarean delivery, without an increased incidence of side effects.MethodsAfter institutional review board approval and informed written consent, women undergoing scheduled cesarean delivery with spinal or combined spinal-epidural anesthesia were randomized to receive either intravenous normal saline or dexmedetomidine 10 µg immediately after delivery. The primary outcome was a patient-rated subjective shivering score using a 10-cm visual analog scale at 30 and 60 min after arrival in the Post-Anesthesia Care Unit. Secondary outcomes included subjective scores for pain, nausea, itching, dry mouth, and sedation, as well as 24-h medication administration and investigator-rated observations of shivering, vomiting, pruritus, and sedation. Repeated measures ANOVA with Tukey-Kramer multiple-comparison test was applied for primary outcomes.ResultsOne hundred patients were enrolled, and 85 completed the study and were included in analysis. The mean ± SD shivering score in the dexmedetomidine group was significantly lower by repeated measures analysis than among controls across the first 60 min (P=0.0002), and individually at both 30 and 60 min (placebo 1.8 ± 2.6 vs. dexmedetomidine 0.6 ± 1.4 at 30 min; 1.2 ± 2.1 vs. 0.3 ± 0.6 at 60 min; both P <0.01). Patient-rated and observer-rated side effects did not significantly differ between groups.ConclusionsProphylactic administration of intravenous dexmedetomidine 10 µg after delivery reduces shivering without notable side effects. |
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| Keywords: | Cesarean delivery Dexmedetomidine Neuraxial anesthesia Shivering |
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