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Bispectral Index Monitoring (bispectral + index_monitoring)
Selected AbstractsBispectral Index monitoring facilitates early detection of catheter-induced vasospasm during neuro-endovascular proceduresACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 3 2009K. Sriganesh No abstract is available for this article. [source] Depth of anesthesia with desflurane does not influence the endocrine-metabolic response to pelvic surgeryACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 1 2008G. BALDINI Background: It has been reported that, with deep levels of anesthesia achieved with general anesthetic agents and opioids, post-operative consumption of morphine and pain intensity can be reduced. It is not clear whether the depth of anesthesia modifies pain intensity by influencing the endocrine-metabolic stress response. The purpose of this study was to assess the influence of a high concentration of desflurane on peri-operative plasma cortisol. Methods: The study was prospective and observer blinded, and included 20 women scheduled for elective total abdominal hysterectomy. They were randomly divided in to two groups: a deep group (D) (n=10) and a light group (L) (n=10). Anesthesia was induced with propofol, fentanyl and rocuronium: desflurane was administered at two different concentrations according to Bispectral Index monitoring (deep, 25 and light, 50). Post-operative pain relief was achieved with patient-controlled analgesia (PCA) with intravenous morphine. Blood samples were taken before, during and after surgery for the measurement of plasma cortisol, glucose and lactate. Post-operative pain visual analog scale (VAS) and morphine consumption were recorded at regular intervals for the first 24 h. Results: The Concentrations of plasma cortisol, glucose and lactate increased with surgery in both groups, and remained elevated, with no difference between the two groups. VAS and morphine consumptions were similar in both groups. Conclusion: The results show that there is no relationship between the intra-operative level of anesthesia depth achieved with desflurane and the extent of endocrine-metabolic stress response. [source] Pre-oxygenation enhances induction with sevoflurane as assessed using bispectral index monitoringACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 4 2006A. Fassoulaki Background:, Several methods may enhance the inhalational induction of anesthesia. In this randomized double-blind study, we evaluated the speed of induction of anesthesia with sevoflurane with or without pre-oxygenation. Methods:, Fifty-four patients scheduled for hysteroscopy received for 10 min air or 100% oxygen via a facemask followed by , 7% sevoflurane in 100% oxygen. During the first 300 s of sevoflurane administration, bispectral index (BIS) values were recorded every 30 s in all patients. In 14 patients, seven in each group, BIS, endtidal CO2, tidal volume, respiratory rate, SpO2, and heart rate were recorded every minute during the pre-induction period and every 30 s during the first 5 min of sevoflurane administration. Results:, The BIS, endtidal CO2, tidal volume and respiratory rate did not differ between the oxygen or air breathing groups (P = 0.696, P = 0.999, P = 0.388, and P = 0.875, respectively), though the oxygen group exhibited lower tidal volumes by 16,20%. The SpO2 and heart rates were higher in the oxygen breathing group (P < 0.001 and P = 0.042, respectively). During sevoflurane administration, BIS values were lower in the oxygen group vs. the group breathing air, in particular at 90, 120, 150, 180 and 210 s (P = 0.001, P = 0.001, P = 0.001, P = 0.001 and P = 0.030, respectively). The endtidal CO2 and the tidal volumes between the groups did not differ. The two groups differed in the SpO2 and the heart rates during induction (P = 0.004 and 0.003, respectively). Conclusions:, Before sevoflurane administration, breathing 100% oxygen for 10 min enhances induction of anesthesia with sevoflurane. [source] A comparison of SNAP IIŠ and bispectral index monitoring in patients undergoing sedationANAESTHESIA, Issue 8 2010S. R. Springman Summary Clinical signs and patients' verbal responses have traditionally been used to assess patients' comfort and the depth of sedation. Recently, level-of-consciousness monitors have been used to guide sedation. The SNAP IIŠ is a single-lead electroencephalogram device that displays a SNAPŠ Index , a derived value based on both high and low frequency electroencephalogram signals. Much of the current clinical research on monitoring during sedation involves the bispectral index monitor. We compared simultaneous readings recorded by the SNAP II and bispectral index during sedation in 51 consecutive patients undergoing surgery. The anaesthesia team was blinded to the SNAP II and bispectal index values. Concurrent SNAP II and bispectral index readings displayed similarly-shaped trajectories during sedation, but further studies are needed to establish the routine clinical utility of both these monitors. [source] Spike-monitoring of anaesthesia for corpus callosotomy using bilateral bispectral indexANAESTHESIA, Issue 7 2009S. Ogawa Summary During corpus callosotomy for intractable epilepsy, the electrocorticogram is commonly recorded from electrodes placed on the brain surface to monitor of epileptic activity and assess the synchronisation of epileptic signals between the left and the right hemispheres. We evaluated the usefulness of bilateral bispectral index monitoring using two monitors and two sensors placed above the frontal region. Spikes were readily detected on the electroencephalogram on the bispectral index monitor, and the frequency of their occurrence increased or decreased in response to adjustment of the sevoflurane concentration. The disappearance of synchronisation between the left and the right hemispheres was observed with use of the bispectral index , in concordance with the electrocorticogram. Thus, ,spike-monitoring anaesthesia' using bilateral bispectral index was useful in assessing both the effect of anaesthetics on the electroencephalogram signals and the surgical therapeutic effect. [source] | ||||||||||