Behaviour of spectral entropy, spectral edge frequency 90%, and alpha and beta power parameters during low-dose propofol infusion P. Mahon, B.R. Greene,

Slides:

Advertisements

Similar presentations

Ketamine increases the frequency of electroencephalographic bicoherence peak on the α spindle area induced with propofol K. Hayashi, N. Tsuda, T. Sawa,

Advertisements

M.R.J. Sury, A. Worley, S.G. Boyd British Journal of Anaesthesia

Relationship between Bispectral Index, electroencephalographic state entropy and effect-site EC50 for propofol at different clinical endpoints M. Iannuzzi,

Norepinephrine and ephedrine do not counteract the increase in cutaneous microcirculation induced by spinal anaesthesia J.-P.H. Lecoq, J.-F. Brichant,

The effects of i.v. fentanyl administration on the minimum alveolar concentration of isoflurane in horses Thomasy S.M. , Steffey E.P. , Mama K.R. , Solano.

Predictive performance of eleven pharmacokinetic models for propofol infusion in children for long-duration anaesthesia M Hara, K Masui, D.J. Eleveld,

Pharmacokinetic parameter sets of alfentanil revisited: optimal parameters for use in target controlled infusion and anaesthesia display systems N Sigmond,

M. M. Sahinovic, D. J. Eleveld, T Miyabe-Nishiwaki, M. M. R. F

International normalized ratio and prothrombin time values before the removal of a lumbar plexus catheter in patients receiving warfarin after total hip.

Lidocaine use in ultrasound-guided femoral nerve block: what is the minimum effective anaesthetic concentration (MEAC90)?† A.M. Taha, A.M. Abd-Elmaksoud

Facial muscle activity, Response Entropy, and State Entropy indices during noxious stimuli in propofol–nitrous oxide or propofol–nitrous oxide–remifentanil.

E. Olofsen, J.W. Sleigh, A. Dahan British Journal of Anaesthesia

Wide inter-individual variability of bispectral index and spectral entropy at loss of consciousness during increasing concentrations of dexmedetomidine,

A.R. Absalom, V. Mani, T. De Smet, M.M.R. F. Struys

Changes in the effect of propofol in response to altered plasma protein binding during normothermic cardiopulmonary bypass E Takizawa, H Hiraoka, D Takizawa,

Does prior administration of enoxaparin influence the effects of levobupivacaine on blood clotting? Assessment using the Thrombelastograph® S.A. Leonard,

Changes in glomerular filtration rate after cardiac surgery with cardiopulmonary bypass in patients with mild preoperative renal dysfunction B.G. Loef,

A different use of visual analytic techniques in anaesthetics

R.N. Upton, A.M. Martinez, C. Grant British Journal of Anaesthesia

Bispectral index, serum drug concentrations and emergence associated with individually adjusted target-controlled infusions of remifentanil and propofol.

Evaluation of a single preoperative dose of pregabalin for attenuation of postoperative pain after laparoscopic cholecystectomy A. Agarwal, S. Gautam,

Predictive performance of computer-controlled infusion of remifentanil during propofol/remifentanil anaesthesia M.J. Mertens, F.H.M. Engbers, A.G.L.

A. Absalom, D. Amutike, A. Lal, M. White, G.N.C. Kenny

Spectral entropy measurement of patient responsiveness during propofol and remifentanil. A comparison with the bispectral index† Vanluchene A.L.G. ,

General anaesthesia in a patient with Brugada syndrome

Evaluation of the effect of intravenous lidocaine on propofol requirements during total intravenous anaesthesia as measured by bispectral index† F.R.

Efficacy of intravenous magnesium in neuropathic pain

W. Ruppen, L. A. Steiner, J. Drewe, L. Hauenstein, S. Brugger, M. D

Development of acute tolerance to the EEG effect of propofol in rats†

Psychology of pain British Journal of Anaesthesia

K.J. Chin British Journal of Anaesthesia

Pharmacodynamic response modelling of arterial blood pressure in adult volunteers during propofol anaesthesia C. Jeleazcov, M. Lavielle, J. Schüttler,

Changes in serum albumin concentration and volume expanding effects following a bolus of albumin 20% in septic patients Margarson M.P. , Soni N.C.

Remifentanil target-controlled infusion vs propofol target-controlled infusion for conscious sedation for awake fibreoptic intubation: a double-blinded.

Comparative study of topical anaesthesia with lidocaine 2% vs levobupivacaine 0.75% in cataract surgery S.A. Fernández, E. Dios, J.C. Diz British Journal.

V. Uppal, G. Fletcher, J. Kinsella British Journal of Anaesthesia

F. Fu, X. Chen, Y. Feng, Y. Shen, Z. Feng, B. Bein

The novel Kv1.5 channel blocker vernakalant for successful treatment of new-onset atrial fibrillation in a critically ill abdominal surgical patient

Assessing fitness for surgery: a comparison of questionnaire, incremental shuttle walk, and cardiopulmonary exercise testing in general surgical patients†

Patient state index vs bispectral index as measures of the electroencephalographic effects of propofol M Soehle, M Kuech, M Grube, S Wirz, S Kreuer,

Bispectral index is related to the spread of spinal sensory block in patients with combined spinal and general anaesthesia R Iida, K Iwasaki, J Kato,

Physiological effects of hyperchloraemia and acidosis

Predictive performance of the Domino, Hijazi, and Clements models during low-dose target-controlled ketamine infusions in healthy volunteers A.R. Absalom,

Real-time breath monitoring of propofol and its volatile metabolites during surgery using a novel mass spectrometric technique: a feasibility study G.R.

Effects of tracheal tube orientation on the success of intubation through an intubating laryngeal mask airway: study in Mallampati class 3 or 4 patients

J. -H. Baumert, M. Hein, K. E. Hecker, S. Satlow, J. Schnoor, R

Hyperventilation-induced hypocapnia changes the pattern of electroencephalographic bicoherence growth during sevoflurane anaesthesia K. Hayashi, M. Fujikawa,

Effects of oxytocin on Purkinje fibres

GlideScope® video laryngoscope: a randomized clinical trial in 203 paediatric patients† J.-T. Kim, H.-S. Na, J.-Y. Bae, D.-W. Kim, H.-S. Kim, C.S. Kim,

H. Krenn, E. Deusch, H. Jellinek, W. Oczenski, R.D. Fitzgerald

Measurement of surgical stress in anaesthetized children

G.J. Mar, M.J. Barrington, B.R. McGuirk British Journal of Anaesthesia

Performance of electroencephalogram-derived parameters in prediction of depth of anaesthesia in a rabbit model A. Silva, D.A. Ferreira, C. Venâncio,

Parecoxib for analgesia after craniotomy

The effect of ephedrine on intubating conditions and haemodynamics during rapid tracheal intubation using propofol and rocuronium M.D. Gopalakrishna,

Tension enterothorax British Journal of Anaesthesia

Comparison of S-(+)-ketamine- with sufentanil-based anaesthesia for elective coronary artery bypass graft surgery: effect on troponin T levels C. Neuhäuser,

Reduction of vasopressor requirement by hydrocortisone administration in a patient with cerebral vasospasm J.A. Alhashemi British Journal of Anaesthesia

T. -F. Lin, Y. -C. Yeh, F. -S. Lin, Y. -P. Wang, C. -J. Lin, W. -Z

Early stages of propofol infusion syndrome in paediatric cardiac surgery: two cases in adolescent girls N. Laquay, P. Pouard, M.A. Silicani, L. Vaccaroni,

I.V. ropivacaine compared with lidocaine for the treatment of tinnitus

M.A. Tooley, C.L. Stapleton, G.L. Greenslade, C Prys-Roberts

Rocuronium dose-dependently suppresses the spectral entropy response to tracheal intubation during propofol anaesthesia M. Kawaguchi, I. Takamatsu, T.

Relationship between Bispectral Index, electroencephalographic state entropy and effect-site EC50 for propofol at different clinical endpoints M. Iannuzzi,

Propofol concentration in exhaled air and arterial plasma in mechanically ventilated patients undergoing cardiac surgery M. Grossherr, A. Hengstenberg,

M. J. Sheen, S. -T. Ho, C. -H. Lee, Y. -C. Tsung, F. -L. Chang, S. -T

Effect of concentration of local anaesthetic solution on the ED50 of bupivacaine for supraclavicular brachial plexus block† P.K. Gupta, P.M. Hopkins

Monitoring level of sedation with bispectral EEG analysis: comparison between hypothermic and normothermic cardiopulmonary bypass† D. Schmidlin, P. Hager,

Plasma lidocaine concentrations following insertion of 2% lidocaine gel into the uterine cavity after uterine balloon thermal ablation G.F. Rousseau,

Closed-loop control of propofol anaesthesia using bispectral index™: performance assessment in patients receiving computer-controlled propofol and manually.

Presentation transcript:

Behaviour of spectral entropy, spectral edge frequency 90%, and alpha and beta power parameters during low-dose propofol infusion P. Mahon, B.R. Greene, C. Greene, G.B. Boylan, G.D. Shorten British Journal of Anaesthesia Volume 101, Issue 2, Pages 213-221 (August 2008) DOI: 10.1093/bja/aen161 Copyright © 2008 British Journal of Anaesthesia Terms and Conditions

Fig 1 International 10–20 electrode positions. Block arrows show the bipolar montages used for comparison. British Journal of Anaesthesia 2008 101, 213-221DOI: (10.1093/bja/aen161) Copyright © 2008 British Journal of Anaesthesia Terms and Conditions

Fig 2 (a) Relative beta power vs propofol target effect-site concentration in each of the six individual bipolar channels averaged across all patients over the frequency range 0.5–47 Hz. Values shown at each effect-site concentration are mean (standard error), averaged across all patients. (b) Spectral edge frequency 90 (SEF 90) vs propofol target effect-site concentration in each of the six individual bipolar channels for the frequency range 0.5–47 Hz. The effect was significant in channels: Fp1–Fp2, F4–C4, and F3–C3. Values shown at each effect-site concentration are mean (standard error), averaged across all patients. (c) Spectral entropy (Hs) vs propofol target effect-site concentration in each of the six individual bipolar channels for the frequency range 0.5–47 Hz. Values shown at each effect-site concentration are mean (standard error), averaged across all patients. The effect was significant in all channels. British Journal of Anaesthesia 2008 101, 213-221DOI: (10.1093/bja/aen161) Copyright © 2008 British Journal of Anaesthesia Terms and Conditions

Fig 3 Three-dimensional power spectral density (PSD) function from Patient 11: (a) fronto-central channel F4–C4 and (b) the occipito-parietal channel P3–O1. The time axis corresponds to propofol effect-site concentration 0.5–2 μg ml−1 (increased in 4 min increments). High frequency activity is a clear feature resulting in a broad power spectrum demonstrating a leftward shift as high frequency (beta) activity increases with increasing effect-site concentration. British Journal of Anaesthesia 2008 101, 213-221DOI: (10.1093/bja/aen161) Copyright © 2008 British Journal of Anaesthesia Terms and Conditions