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October 17-21, 2009 New Orleans, LA Home Abstract Archive Search Abstracts 2009 Session Grid 2009 Meeting Website Policy Statements ASA Website Feedback 
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A1267
October 21, 2008 9:00 AM - 11:00 AM Room Hall E2-Area A, |
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| Hemispheric Synchronized Sounds and Perioperative Analgesic Requirements | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Susan M. Dabu-Bondoc, M.D., Nalini Vadivelu, M.D., Megan Weinberg, M.A., Jill E. MacLaren, Ph.D., Zeev N. Kain, M.D., M.B.A. Anesthesiology, Yale University School of Medicine, New Haven, Connecticut |
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The use of hemispheric synchronized (Hemi-Sync) sounds in the operating room has been promoted to decrease anxiety, perioperative anesthetic or analgesic consumption but data is limited. 60 ambulatory patients were consented and randomized into 3 groups: treatment group had hemisync sounds (n=20), music group had music tapes of their choice (n=20), and control (placebo) group had a blank cassette tape (n=20). The intervention was applied in the preoperative area and during the surgical procedure. After a propofol-nitrous-vecuronium general anesthesia perioperative analgesic requirements were recorded. To ensure uniformity of hypnotic depth in all participants a bispectral index monitor was used. The Hemi-Sync group had a significantly reduced intraoperative analgesic consumption compared to the music (p=0.02) and control group (p = 0.04). Although pain (VAS) scores were significantly less in the Hemi-Sync group 1 hour and 24 hours after surgery, analgesic requirements were similar among the three groups throughout the 24 hour postoperative period. Time to discharge trended lower in participants who had Hemi-Sync (p=.058); incidence of nausea/vomiting, oxygen desaturation. patient recall, and patient satisfaction were similar in all groups. We conclude that the use Hemi-Sync sounds before and during general anesthesia decreases intraoperative but not postoperative analgesic requirements.[table1][table2] Anesthesiology 2008; 109 A1267 |
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