Abstract
Objective: We describe BIS values for a patient undergoing breast surgery under self-hypnosis in order to access the value of global surface EEG measures occurring during this process. Methods: Following verbal consent, a BISTM monitor (Aspect Medical, Newton MA) was placed and values measured while the patient performed self-hypnosis for a simple mastectomy and sentinel node biopsy. Results: Thirty-nine minutes after incision the BIS value decreased transiently to 72 followed by several other transient decreases, the lowest of which was 59. Values remained at approximately 90 throughout most of the operative period. The BIS value returned to baseline after completion of the operation. Conclusions: Our findings support the hypothesis that hypnosis is a dynamic cerebral process incorporating many changes within brain activation centers and one distinct from dissociative patterns seen under anesthesia. Current algorithms employed by the BISTM monitor add little to the management of patients utilizing hypnosis for analgesia.
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References
Gravitz MA. Early uses of hypnosis as surgical anesthesia. Am J Clin Hypn 1988; 30: 201–208.
Astin JA, Shapiro SL, Eisenberg DM, Forys KL. Mind-body medicine: state of the science, implications for practice. J Am Board Fam Pract 2003; 16: 131–147.
Spiegel D, Moore R. Imagery and hypnosis in the treatment of cancer patients. Oncology 1997; 11: 1179–1189.
Chaves JF, Dworkin SF. Hypnotic control of pain: historical perspectives and future prospects. Int J Clin Exp Hypn 1997; 45: 356–376.
Bromm B, Lorenz J. Neurophysiological evaluation of pain. Electroencephalogr Clin Neurophysiol 1998; 107: 227–253.
De Pascalis V, Perrone M. EEG asymmetry and heart rate during experience of hypnotic analgesia in high and low hypnotizables. Int J Psychophysiol 1996; 21: 163–175.
Ray WJ, De Pascalis V. Temporal aspects of hypnotic processes. Int J Clin Exp Hypn 2003; 51: 147–165.
Rainville P, Hofbauer RK, Paus T, Duncan GH, Bushnell MC, Price DD. Cerebral mechanisms of hypnotic induction and suggestion. J Cogn Neurosci 1999; 11: 110–125.
Rampil IJ. A primer for EEG signal processing in anesthesia. Anesthesiology 1998; 89: 980–1002.
Shapiro BA. Bispectral Index: better information for sedation in the intensive care unit? Crit Care Med 1999; 27: 1663–1664.
Renna M, Wigmore T, Mofeez A, Gillbe C. Biasing effect of the electromyogram on BIS: a controlled study during high-dose fentanyl induction. J Clin Monit Comput 2002; 17: 377–381.
Messner M, Beese U, Romstock J, Dinkel M, Tschaikowsky K. The bispectral index declines during neuromuscular block in fully awake persons. Anesth Analg 2003; 97: 488–491.
Bruhn J, Bouillon TW, Shafer SL. Electromyographic activity falsely elevates the bispectral index. Anesthesiology 2000; 92: 1485–1487.
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Burkle, C.M., Jankowski, C.J., Torsher, L.C. et al. Bis Monitor Findings During Self-Hypnosis. J Clin Monit Comput 19, 391–393 (2005). https://doi.org/10.1007/s10877-005-6539-9
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DOI: https://doi.org/10.1007/s10877-005-6539-9