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| | | ![]() Melatonin Reduces Emergence Delirium Post-Anaesthesia in Children IRVINE, Calif -- July 2, 2009 -- A study published in the July issue of Anesthesiology, shows that oral treatment with melatonin before surgery can significantly reduce the occurrence of emergence delirium post-anaesthesia. "Studies conducted in adults have revealed that oral administration of melatonin before surgery beneficially reduced anxiety levels, but relevant similar treatment data for children undergoing anaesthesia and surgery are limited," said lead author Zeev N. Kain, MD, Department of Anesthisiology, University of California at Irvine, and University of California Irvine School of Medicine, Irvine, California. Seeking confirmation of additional options for anxiety management, researchers first set out to determine if melatonin could decrease anxiety levels when compared with midazolam. In a study group that consisted of 148 children, aged 2 to 8 years, undergoing outpatient surgery under general anaesthesia, children were randomly assigned to receive midazolam or melatonin orally before surgery. Children were followed throughout their surgical experience as researchers measured anxiety and secondary study outcomes of anaesthesia administration compliance and emergence behaviour. Behaviours were measured using the Yale Preoperative Anxiety Scale (mYPass), the Induction Compliance Checklist, and the Keegan scale. "Results indicated that preoperative melatonin administration did not effectively reduce anxiety levels," said Dr. Kain. "However, it was found that melatonin significantly reduced the incidence of emergence delirium in these children. As 3 million children undergo surgery in the U.S. each year, these findings reveal noteworthy healthcare and treatment implications." Melatonin showed a direct dose dependent effect on emergence delirium. Children in the melatonin premedication group received either melatonin 0.05 mg/kg, .2 mg/kg, or 0.4 mg/kg and the incidence of delirium was 25%, 8.3%, and 5.4%, respectively. Midazolam remains the recommended premedication for anxiety reduction in children scheduled for surgery. SOURCE: University of California at Irvine
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