Abstract
In this double-blinded randomized study, we sought to confirm that patients undergoing general anesthesia who were exposed to a hemispheric synchronization (Hemi-Sync) musical recording during surgery had a smaller analgesia requirement, as was suggested in a previous study. Bispectral index monitoring was used to adjust depth of hypnosis, and hemodynamic variables were used to determine analgesia administration. Consented patients underwent either laparoscopic bariatric or one-level lumbar disk surgery. After endotracheal intubation and application of headphones, baseline heart rate and arterial blood pressure were established. Isoflurane was titrated to maintain sedation on the basis of a target bispectral index range of 40–60, and 25-μg increments of fentanyl were administered in response to increases in heart rate and systolic arterial blood pressure. Bariatric patients who listened to Hemi-Sync required one-third less fentanyl than the control group (mean [SD]: 0.015 [0.01] vs 0.024 μg · kg−1 · min−1 [0.01]) (P = 0.009). It is interesting to note that lumbar patients in the experimental and control groups required similar amounts of fentanyl (0.012 [0.01] vs 0.015 μg · kg−1 · min−1 [0.01]). End-tidal isoflurane concentration was similar for Hemi-Sync and blank-tape patients (bariatric, 0.74% (0.14) vs 0.77% (0.21); lumbar, 0.36% [0.16] vs 0.39% [0.12]). The bariatric patients in this study demonstrated that Hemi-Sync may be an innovative intraoperative supplement to analgesia.
This website uses cookies.
We use cookies to improve user experience, and analyze web traffic. For these reasons, we may share your site usage data with our analytics partners.
Details
Marketing
Hemi-Sync and our advertising partners (including social media platforms like Google, Facebook and Instagram) use tracking to provide personalized offers to give you the full user experience. This includes sending you targeted messages on 3rd Party Advertising Platforms” as described in our Privacy Policy.
Functional
We use functional tracking to analyze how our website is being used. This data helps us to discover errors and develop new designs. It also allows us to test the effectiveness of our website. Furthermore, these cookies provide insights for advertising analysis and affiliate marketing.
Required
We use cookies to enable essential website operations and to ensure certain features work properly, like the option to log in or add a product to your shopping cart. This tracking is always enabled, otherwise, you can’t view the website or shop online.
Want to learn more about how Hemi-Sync tracks you? Check out our Privacy Policy.