Tim Brunson DCH

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Effect of the music-therapy under spinal anesthesia

BACKGROUND: Since no pre-medication has been widely accepted especially in spinal anesthesia, anesthesiologists should manage the control of patient's anxiety during surgery. Instead of sedatives, we have been using music-therapy during spinal anesthesia. Bispectral index monitoring (BIS) is used as one of the sedation indices in spinal anesthesia. The aim of this study was to assess the music-therapy on reducing anxiety of patients under spinal anesthesia using BIS and interview type psychology test, State Trait Anxiety Inventory (STAI). METHODS: Fifty-eight ASA physical status I-II patients scheduled for spinal anesthesia, were randomly allocated into M group (music group, n=29) or C group (control, n=29). BIS, EMG, and SQI of both groups were obtained continuously with computer system. Patients in M group listened to music by head phone and those in C group were left free under ordinary operating theater environment. Trait Anxiety Inventory (STAI-TA) score was obtained preoperatively for property-based anxiety and the State Anxiety Inventory (STAI-SA) score was obtained postoperatively for condition-based anxiety. Time averaged BIS scores (pre-surgery, during-surgery and post-surgery period)were obtained during operation. RESULTS: Time averaged BIS values of M and C group in pre-surgery period, during-surgery period, and post-surgery period were 95.3+/-0.4 vs 95.8+/-0.4 (NS), 87.6+/-7.5 vs 95.1+/-2.8 (P<0.01) and 96.0+/-0.4 vs. 96.2+/-0.4 (NS), respectively. Post-surgery STAI-SA was 29.7+/-7.2 in M group vs 38.8+/-10.3 in C group (P<0.01) while pre-surgery STAI-SA scores of both groups were not different. CONCLUSIONS: Music-therapy reduced BIS value and was effective to reduce patient's anxiety during spinal anesthesia.

Masui. 2009 Jun;58(6):684-91. Maeyama A, Kodaka M, Miyao H. Department of Anesthesiology, Saitama Medical Center Saitama Medical University, Kawagoe.

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