Effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia: a prospective, randomized, double-blind, controlled trial
BackgroundAccording to several studies investigating the relationship between muscle activity and electroencephalogram results, reversal of neuromuscular blockade (NMB) may affect depth of anesthesia indices. Therefore, we investigated the effect of pyridostigmine on these indices via spectral entro...
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| Format: | Article |
| Language: | English |
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Korean Society of Anesthesiologists
2016-06-01
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| Series: | Korean Journal of Anesthesiology |
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| Online Access: | http://ekja.org/upload/pdf/kjae-69-227.pdf |
| _version_ | 1819319255604133888 |
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| author | Eugene Kim Jae Hun Ryu Sung Hye Byun |
| author_facet | Eugene Kim Jae Hun Ryu Sung Hye Byun |
| author_sort | Eugene Kim |
| collection | DOAJ |
| description | BackgroundAccording to several studies investigating the relationship between muscle activity and electroencephalogram results, reversal of neuromuscular blockade (NMB) may affect depth of anesthesia indices. Therefore, we investigated the effect of pyridostigmine on these indices via spectral entropy.MethodsFifty-six patients scheduled for thyroidectomy or parotidectomy were included in this study and randomized into two groups. At the start of skin suturing, the desflurane concentration was adjusted to 4.2 vol% in both groups. Following this, the pyridostigmine group (group P, n = 28) was administered pyridostigmine 0.2 mg/kg mixed with glycopyrrolate 0.04 mg/kg, while the control group (group C, n = 28) received normal saline. Entropy values (response entropy [RE] and state entropy [SE]), train of four (TOF) ratio, and end-tidal desflurane concentration were recorded from point of drug administration to 15 minutes post-drug administration.ResultsMean RE values at 15 minutes, when the maximum effect of pyridostigmine was anticipated, showed a statistically significant difference between groups (53.8 ± 10.5 in group P and 48.0 ± 8.8 in group C; P = 0.030). However, mean SE at 15 minutes showed no significant difference between the two groups (P = 0.066). At 15 minutes, there were significant differences in the TOF ratio between the two groups (P < 0.001).ConclusionsNMB reversal by pyridostigmine significantly increased RE values but not SE values. This finding suggests that spectral entropy may be a useful alternative tool for monitoring anesthetic depth during recovery from anesthesia in the presence of electromyogram activity. |
| first_indexed | 2024-12-24T11:00:47Z |
| format | Article |
| id | doaj.art-2cc0da70b03549378574ed2a7970127d |
| institution | Directory Open Access Journal |
| issn | 2005-6419 2005-7563 |
| language | English |
| last_indexed | 2024-12-24T11:00:47Z |
| publishDate | 2016-06-01 |
| publisher | Korean Society of Anesthesiologists |
| record_format | Article |
| series | Korean Journal of Anesthesiology |
| spelling | doaj.art-2cc0da70b03549378574ed2a7970127d2022-12-21T16:58:43ZengKorean Society of AnesthesiologistsKorean Journal of Anesthesiology2005-64192005-75632016-06-0169322723310.4097/kjae.2016.69.3.2278172Effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia: a prospective, randomized, double-blind, controlled trialEugene Kim0Jae Hun Ryu1Sung Hye Byun2Department of Anesthesiology and Pain Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea.Department of Anesthesiology and Pain Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea.Department of Anesthesiology and Pain Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea.BackgroundAccording to several studies investigating the relationship between muscle activity and electroencephalogram results, reversal of neuromuscular blockade (NMB) may affect depth of anesthesia indices. Therefore, we investigated the effect of pyridostigmine on these indices via spectral entropy.MethodsFifty-six patients scheduled for thyroidectomy or parotidectomy were included in this study and randomized into two groups. At the start of skin suturing, the desflurane concentration was adjusted to 4.2 vol% in both groups. Following this, the pyridostigmine group (group P, n = 28) was administered pyridostigmine 0.2 mg/kg mixed with glycopyrrolate 0.04 mg/kg, while the control group (group C, n = 28) received normal saline. Entropy values (response entropy [RE] and state entropy [SE]), train of four (TOF) ratio, and end-tidal desflurane concentration were recorded from point of drug administration to 15 minutes post-drug administration.ResultsMean RE values at 15 minutes, when the maximum effect of pyridostigmine was anticipated, showed a statistically significant difference between groups (53.8 ± 10.5 in group P and 48.0 ± 8.8 in group C; P = 0.030). However, mean SE at 15 minutes showed no significant difference between the two groups (P = 0.066). At 15 minutes, there were significant differences in the TOF ratio between the two groups (P < 0.001).ConclusionsNMB reversal by pyridostigmine significantly increased RE values but not SE values. This finding suggests that spectral entropy may be a useful alternative tool for monitoring anesthetic depth during recovery from anesthesia in the presence of electromyogram activity.http://ekja.org/upload/pdf/kjae-69-227.pdfelectromyographyentropypyridostigmine bromide |
| spellingShingle | Eugene Kim Jae Hun Ryu Sung Hye Byun Effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia: a prospective, randomized, double-blind, controlled trial Korean Journal of Anesthesiology electromyography entropy pyridostigmine bromide |
| title | Effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia: a prospective, randomized, double-blind, controlled trial |
| title_full | Effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia: a prospective, randomized, double-blind, controlled trial |
| title_fullStr | Effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia: a prospective, randomized, double-blind, controlled trial |
| title_full_unstemmed | Effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia: a prospective, randomized, double-blind, controlled trial |
| title_short | Effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia: a prospective, randomized, double-blind, controlled trial |
| title_sort | effect of neuromuscular blockade reversal by pyridostigmine on spectral entropy values during recovery from desflurane anesthesia a prospective randomized double blind controlled trial |
| topic | electromyography entropy pyridostigmine bromide |
| url | http://ekja.org/upload/pdf/kjae-69-227.pdf |
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