Epileptiform EEG Patterns During Induction of General Anaesthesia With Sevoflurane Compared to Those With Propofol
NCT ID: NCT03209323
Last Updated: 2017-07-11
Study Results
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Basic Information
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COMPLETED
NA
60 participants
INTERVENTIONAL
2007-01-01
2008-12-13
Brief Summary
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Detailed Description
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The aim of the additional analysis was to identify whether observance of the variations of values displayed on different depth of anaesthesia monitors (DOA monitors) reliably reflect the actual depth of general anaesthesia during presence of epileptiform patterns (EPs) in EEGs during VIGA with sevoflurane using two different techniques and intravenous induction of general anaesthesia with single dose of propofol.
We performed standard 30-minute initial EEG recordings for all patients participating in the study to exclude any pre-existing epileptic EEG patterns. We took the initial EEG recordings in a dark quiet room for 5 minutes as a baseline, followed by three eye opening and closing sequences of 10 seconds each and photostimulation lasting 10 minutes (flash stimuli at frequencies of 3/6/9/12 Hz- alpha; 15/18/21/24 Hz- beta). Then we obtained another baseline reading and we asked the patients to achieve a state of hyperventilation by taking 20 forceful breathes per minute for five minutes. Finally, we obtained another baseline reading.
Throughout the induction of anaesthesia and the surgery, standard monitoring procedures were utilised to pay close attention to the vital parameters such as non-invasive arterial pressure (BP), heart rate (HR), standard electrocardiography (ECG) II, arterial oxygen saturation (SaO2), fraction of inspired oxygen in the gas mixture (FiO2), facial electromyography (fEMG), fraction of inspired sevoflurane (FiAA), fraction of expired sevoflurane (FeAA), exhaled carbon dioxide concentration (etCO2), minimal alveolar concentration of sevoflurane (MAC).
Conditions
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Study Design
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RANDOMIZED
PARALLEL
DIAGNOSTIC
SINGLE
Study Groups
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sevoflurane - increasing concentrations
The patient was breathing spontaneously via the face mask and the sevoflurane concentration in the inhaled gas was doubled every 10 breaths starting from 0.3 vol. % in a sequence 0.3-0.6-1.2-2.4-4.8-8 vol. % until a minimal alveolar concentration (MAC) of 2 was obtained in the exhalation gas. Electroencephalography (EEG), bispectral index (BIS), response and state entropy (RE and SE), middle latency auditory evoked potentials (MLAEP) were monitored.
electroencephalography (EEG)
Four EEG channels were recorded using electrode positions as defined in the International 10-20 System with Ag/AgCl2 cup electrodes (Spes Medica) attached to the scalp with EC2 Electrode Cream (Grass Technologies). The impedance was set below 1 k, and the electrodes were attached to module S/5 E-EEG of the anaesthetic monitor S/5 (GE Healthcare).
bispectral index (BIS)
The BIS score was derived from a sensor (Aspect Medical Systems) positioned diagonally on the patients' foreheads according to producer's instructions.
response and state entropy (RE and SE)
The respone and state entropy (RE and SE) score was derived from a sensor (Aspect Medical Systems) positioned diagonally on the patients' foreheads according to producer's instructions.
middle latency auditory evoked potentials (MLAEP)
value of A-line Auto Regressive Index (AAI) derived from middle latency auditory evoked potentials (MLAEP) (A-line Monitor, Danmeter A/S, Odense, Denmark) was observed which measures the central nervous system responsiveness to a specific auditory stimulus
sevoflurane - vital capacity
The anaesthetic circuit was prefilled with 8% sevoflurane. The patients were asked to exhale to the residual volume. Then the patients were explained to perform a vital-capacity breath with a face mask applied tightly to their faces. Then the patients were encouraged to hold their breaths as long as possible. Thereafter, the patients were asked to breathe spontaneously. Electroencephalography (EEG), bispectral index (BIS), response and state entropy (RE and SE), middle latency auditory evoked potentials (MLAEP) were monitored.
electroencephalography (EEG)
Four EEG channels were recorded using electrode positions as defined in the International 10-20 System with Ag/AgCl2 cup electrodes (Spes Medica) attached to the scalp with EC2 Electrode Cream (Grass Technologies). The impedance was set below 1 k, and the electrodes were attached to module S/5 E-EEG of the anaesthetic monitor S/5 (GE Healthcare).
bispectral index (BIS)
The BIS score was derived from a sensor (Aspect Medical Systems) positioned diagonally on the patients' foreheads according to producer's instructions.
response and state entropy (RE and SE)
The respone and state entropy (RE and SE) score was derived from a sensor (Aspect Medical Systems) positioned diagonally on the patients' foreheads according to producer's instructions.
middle latency auditory evoked potentials (MLAEP)
value of A-line Auto Regressive Index (AAI) derived from middle latency auditory evoked potentials (MLAEP) (A-line Monitor, Danmeter A/S, Odense, Denmark) was observed which measures the central nervous system responsiveness to a specific auditory stimulus
propofol - intravenous induction
the patients were preoxygenated with 100% oxygen following which propofol was intravenously administered at a single dose of 2.5 mg/kg of body weight, after which it was infused with an infusion speed of 4 mg/kg body weight/h. Electroencephalography (EEG), bispectral index (BIS), response and state entropy (RE and SE), middle latency auditory evoked potentials (MLAEP) were monitored.
electroencephalography (EEG)
Four EEG channels were recorded using electrode positions as defined in the International 10-20 System with Ag/AgCl2 cup electrodes (Spes Medica) attached to the scalp with EC2 Electrode Cream (Grass Technologies). The impedance was set below 1 k, and the electrodes were attached to module S/5 E-EEG of the anaesthetic monitor S/5 (GE Healthcare).
bispectral index (BIS)
The BIS score was derived from a sensor (Aspect Medical Systems) positioned diagonally on the patients' foreheads according to producer's instructions.
response and state entropy (RE and SE)
The respone and state entropy (RE and SE) score was derived from a sensor (Aspect Medical Systems) positioned diagonally on the patients' foreheads according to producer's instructions.
Interventions
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electroencephalography (EEG)
Four EEG channels were recorded using electrode positions as defined in the International 10-20 System with Ag/AgCl2 cup electrodes (Spes Medica) attached to the scalp with EC2 Electrode Cream (Grass Technologies). The impedance was set below 1 k, and the electrodes were attached to module S/5 E-EEG of the anaesthetic monitor S/5 (GE Healthcare).
bispectral index (BIS)
The BIS score was derived from a sensor (Aspect Medical Systems) positioned diagonally on the patients' foreheads according to producer's instructions.
response and state entropy (RE and SE)
The respone and state entropy (RE and SE) score was derived from a sensor (Aspect Medical Systems) positioned diagonally on the patients' foreheads according to producer's instructions.
middle latency auditory evoked potentials (MLAEP)
value of A-line Auto Regressive Index (AAI) derived from middle latency auditory evoked potentials (MLAEP) (A-line Monitor, Danmeter A/S, Odense, Denmark) was observed which measures the central nervous system responsiveness to a specific auditory stimulus
Eligibility Criteria
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Inclusion Criteria
* written informed consent to undergo general anaesthesia
Exclusion Criteria
18 Years
70 Years
No
Sponsors
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Silesian University of Medicine
OTHER
Medical University of Silesia
OTHER
Responsible Party
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Michał Stasiowski
Principal Investigator, Department of Anaesthesiology and Intensive Therapy
Principal Investigators
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Przemysław Jałowiecki
Role: PRINCIPAL_INVESTIGATOR
Silesian University of Medicine
Locations
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Medical University of Silesia
Sosnowiec, Silesian Voivodeship, Poland
Countries
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References
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Viertio-Oja H, Maja V, Sarkela M, Talja P, Tenkanen N, Tolvanen-Laakso H, Paloheimo M, Vakkuri A, Yli-Hankala A, Merilainen P. Description of the Entropy algorithm as applied in the Datex-Ohmeda S/5 Entropy Module. Acta Anaesthesiol Scand. 2004 Feb;48(2):154-61. doi: 10.1111/j.0001-5172.2004.00322.x. No abstract available.
Chinzei M, Sawamura S, Hayashida M, Kitamura T, Tamai H, Hanaoka K. Change in bispectral index during epileptiform electrical activity under sevoflurane anesthesia in a patient with epilepsy. Anesth Analg. 2004 Jun;98(6):1734-1736. doi: 10.1213/01.ANE.0000117282.72866.26.
Sarkela MO, Ermes MJ, van Gils MJ, Yli-Hankala AM, Jantti VH, Vakkuri AP. Quantification of epileptiform electroencephalographic activity during sevoflurane mask induction. Anesthesiology. 2007 Dec;107(6):928-38. doi: 10.1097/01.anes.0000291444.68894.ee.
Gibert S, Sabourdin N, Louvet N, Moutard ML, Piat V, Guye ML, Rigouzzo A, Constant I. Epileptogenic effect of sevoflurane: determination of the minimal alveolar concentration of sevoflurane associated with major epileptoid signs in children. Anesthesiology. 2012 Dec;117(6):1253-61. doi: 10.1097/ALN.0b013e318273e272.
Kreuzer I, Osthaus WA, Schultz A, Schultz B. Influence of the sevoflurane concentration on the occurrence of epileptiform EEG patterns. PLoS One. 2014 Feb 26;9(2):e89191. doi: 10.1371/journal.pone.0089191. eCollection 2014.
Jaaskelainen SK, Kaisti K, Suni L, Hinkka S, Scheinin H. Sevoflurane is epileptogenic in healthy subjects at surgical levels of anesthesia. Neurology. 2003 Oct 28;61(8):1073-8. doi: 10.1212/01.wnl.0000090565.15739.8d.
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Kaisti KK, Jaaskelainen SK, Rinne JO, Metsahonkala L, Scheinin H. Epileptiform discharges during 2 MAC sevoflurane anesthesia in two healthy volunteers. Anesthesiology. 1999 Dec;91(6):1952-5. doi: 10.1097/00000542-199912000-00052. No abstract available.
Vakkuri A, Jantti V, Sarkela M, Lindgren L, Korttila K, Yli-Hankala A. Epileptiform EEG during sevoflurane mask induction: effect of delaying the onset of hyperventilation. Acta Anaesthesiol Scand. 2000 Jul;44(6):713-9. doi: 10.1034/j.1399-6576.2000.440609.x.
Julliac B, Guehl D, Chopin F, Arne P, Burbaud P, Sztark F, Cros AM. Risk factors for the occurrence of electroencephalogram abnormalities during induction of anesthesia with sevoflurane in nonepileptic patients. Anesthesiology. 2007 Feb;106(2):243-51. doi: 10.1097/00000542-200702000-00011.
Ben-Menachem E, Zalcberg D. Depth of anesthesia monitoring: a survey of attitudes and usage patterns among Australian anesthesiologists. Anesth Analg. 2014 Nov;119(5):1180-5. doi: 10.1213/ANE.0000000000000344.
Vakkuri A, Yli-Hankala A, Sarkela M, Lindgren L, Mennander S, Korttila K, Saarnivaara L, Jantti V. Sevoflurane mask induction of anaesthesia is associated with epileptiform EEG in children. Acta Anaesthesiol Scand. 2001 Aug;45(7):805-11. doi: 10.1034/j.1399-6576.2001.045007805.x.
Yli-Hankala A, Vakkuri A, Sarkela M, Lindgren L, Korttila K, Jantti V. Epileptiform electroencephalogram during mask induction of anesthesia with sevoflurane. Anesthesiology. 1999 Dec;91(6):1596-603. doi: 10.1097/00000542-199912000-00009.
Aho AJ, Yli-Hankala A, Lyytikainen LP, Jantti V. Facial muscle activity, Response Entropy, and State Entropy indices during noxious stimuli in propofol-nitrous oxide or propofol-nitrous oxide-remifentanil anaesthesia without neuromuscular block. Br J Anaesth. 2009 Feb;102(2):227-33. doi: 10.1093/bja/aen356. Epub 2008 Dec 25.
Jensen EW, Lindholm P, Henneberg SW. Autoregressive modeling with exogenous input of middle-latency auditory-evoked potentials to measure rapid changes in depth of anesthesia. Methods Inf Med. 1996 Sep;35(3):256-60.
Newton DE, Thornton C, Konieczko KM, Jordan C, Webster NR, Luff NP, Frith CD, Dore CJ. Auditory evoked response and awareness: a study in volunteers at sub-MAC concentrations of isoflurane. Br J Anaesth. 1992 Aug;69(2):122-9. doi: 10.1093/bja/69.2.122.
Gajraj RJ, Doi M, Mantzaridis H, Kenny GN. Comparison of bispectral EEG analysis and auditory evoked potentials for monitoring depth of anaesthesia during propofol anaesthesia. Br J Anaesth. 1999 May;82(5):672-8. doi: 10.1093/bja/82.5.672.
Schraag S, Bothner U, Gajraj R, Kenny GN, Georgieff M. The performance of electroencephalogram bispectral index and auditory evoked potential index to predict loss of consciousness during propofol infusion. Anesth Analg. 1999 Nov;89(5):1311-5.
Pilge S, Kreuzer M, Karatchiviev V, Kochs EF, Malcharek M, Schneider G. Differences between state entropy and bispectral index during analysis of identical electroencephalogram signals: a comparison with two randomised anaesthetic techniques. Eur J Anaesthesiol. 2015 May;32(5):354-65. doi: 10.1097/EJA.0000000000000189.
Other Identifiers
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SilesianMUKOAIIT6
Identifier Type: -
Identifier Source: org_study_id
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