Abstract:
:We investigated the effect of incision and sternotomy on the auditory evoked potential (AEP) and EEG, to try to predict a haemodynamic response to incision or sternotomy using the AEP and EEG in 41 patients undergoing cardiac surgery during propofol and alfentanil anaesthesia. The AEP and EEG were recorded before incision, between incision and sternotomy, and after sternotomy. Peak latencies and amplitudes of AEP peaks V, Na, Pa, Nb, Pb and Nc were determined. From the EEG the median, spectral edge and peak power frequencies, and percentages of delta, theta, alpha and beta power were calculated. Each patient was classified as responsive, equivocally responsive or unresponsive to incision or sternotomy based on increase in arterial pressure and heart rate on incision and sternotomy. Before incision, Nb and Pb latency and propofol concentration were higher for unresponsive patients but heart rate and median frequency before incision were lower. After sternotomy, Pa and Nb amplitude, peak power frequency and percentage alpha power were higher, and percentage theta power lower for responsive patients. Pa latency was higher after sternotomy for unresponsive patients. Using a combination of heart rate, arterial pressures and features derived from the AEP (all recorded before incision), the occurrence of a response to incision could be predicted in individual patients with a sensitivity of 85%, positive predictive accuracy of 63% and total accuracy of 72%. We conclude that AEP are more sensitive to pain stimuli than spectral features of the spontaneous EEG. In addition, the AEP may help in predicting inadequate anaesthesia.
journal_name
Br J Anaesthjournal_title
British journal of anaesthesiaauthors
de Beer NA,van Hooff JC,Cluitmans PJ,Korsten HH,Grouls RJdoi
10.1093/bja/76.5.685subject
Has Abstractpub_date
1996-05-01 00:00:00pages
685-93issue
5eissn
0007-0912issn
1471-6771pii
S0007-0912(17)43485-4journal_volume
76pub_type
杂志文章abstract:BACKGROUND:Isoflurane has been reported to induce caspase-3 activation, which may induce neurotoxicity and contribute to the pathogenesis of Alzheimer's disease. However, the underlying mechanism is largely unknown, especially whether or not isoflurane can induce ryanodine receptors (RyRs)-associated endoplasmic reticu...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeu053
更新日期:2014-10-01 00:00:00
abstract::Closed-loop control of neuromuscular blockade, using a semi-continuous infusion of vecuronium, is described. In 28 patients, the average neuromuscular transmission was between 13 and 17% of control. Requirements for vecuronium averaged 1.1 micrograms kg-1 min-1 (0.8-1.5 micrograms kg-1 min-1), being in the same range ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/58.10.1100
更新日期:1986-10-01 00:00:00
abstract:BACKGROUND:Propofol is used during living-related donor liver transplantation because its metabolism is not greatly affected by liver failure. However, the pharmacokinetics of propofol during liver transplantation have not been fully defined. The purpose of this study was to evaluate the apparent systemic clearance of ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aei243
更新日期:2005-11-01 00:00:00
abstract::This study was designed to investigate if propofol produced cardiovascular effects by direct actions or by indirect actions secondary to depression of the central nervous system. Experiments were performed on chloralose anaesthetized dogs in which all neurogenic cardiovascular reflexes were abolished by bilateral vago...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/63.1.87
更新日期:1989-07-01 00:00:00
abstract:BACKGROUND:An important cause of coagulopathy in cardiac surgery is impaired thrombin generation. While plasma is often used to correct this element of the coagulopathy, studies in vitro suggest that prothrombin complex concentrates (PCCs) might be more effective. Comparative data, however, are scant. METHODS:We compa...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1016/j.bja.2018.02.017
更新日期:2018-05-01 00:00:00
abstract::This report describes the anaesthetic management of a ventricular arrhythmia-prone patient with a prolonged Q-T interval for closed reduction and wiring of a mandibular fracture. The patient was premedicated with propranolol and anaesthetized with isoflurane (inhalation). Documentation of heart rate v. Q-T interval re...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/55.4.361
更新日期:1983-04-01 00:00:00
abstract:BACKGROUND:Postoperative cognitive dysfunction (POCD) is a common complication in elderly patients after major surgery. An association between POCD and the development of dementia has been suspected. In this study, we assessed if POCD was a risk factor for the occurrence of dementia. METHODS:Danish patients enrolled b...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,多中心研究
doi:10.1093/bja/aes466
更新日期:2013-06-01 00:00:00
abstract::Raised intracranial pressure (ICP) and low cerebral blood flow (CBF) are associated with ischaemia and poor outcome after brain injury. Therefore, many management protocols target these parameters. This overview summarizes the technical aspects of ICP and CBF monitoring, and their role in the clinical management of br...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/ael110
更新日期:2006-07-01 00:00:00
abstract::Thirty patients for elective lower segment Caesarean section were randomly divided into two groups. One group received 50 mulitre/kg of Althesin for induction of anaesthesia and the other, 100 mulitre/kg. The two maternal groups were similar. There was no significant difference in the clinical or biochemical status of...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/bja/47.11.1213
更新日期:1975-11-01 00:00:00
abstract::We have studied patterns of oxygen saturation (SpO2) before and after thoracotomy in 20 patients monitored nightly from the preoperative night to the fourth postoperative night. After operation, 10 patients received paravertebral bupivacaine (PVB) infusion and 10 received paravertebral saline (PVS) infusion. Papaveret...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/bja/67.6.704
更新日期:1991-12-01 00:00:00
abstract::Relative humidity of air produced by simple compressors used to drive ventilators was measured at different working pressures. At normal working pressures, a relative humidity of 100% was found and condensation occurred, mainly at the high pressure air/oxygen mixer valve. This resulted in blockages and loss of accurac...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/53.5.549
更新日期:1981-05-01 00:00:00
abstract::This case series presents 10 patients undergoing vascular surgery with asymptomatic elevated high-sensitivity troponin T concentrations, measured at outpatient clinic before surgery. Patients were included in the RAVE (Rotterdam Antiplatelet therapy in Vascular patiEnts) pilot study. All included patients underwent co...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.bja.2019.08.013
更新日期:2019-11-01 00:00:00
abstract:BACKGROUND:In this randomized, double-blind study, the effects of thoracic and lumbar epidural anaesthesia on the induction doses (IDs) and maintenance doses (MDs) of propofol during bispectral index (BIS) guided total i.v. anaesthesia were compared. METHODS:Fifty-four patients (three groups, n=18 each) undergoing uro...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aen160
更新日期:2008-08-01 00:00:00
abstract::Several risk scores have been developed to calculate the probability of postoperative nausea and vomiting (PONV). However, the power to discriminate which individual will suffer from PONV is still limited. Thus, we wondered how the number of predictors in a score affects the discriminating power and how the characteri...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/86.6.822
更新日期:2001-06-01 00:00:00
abstract::The clinical understanding of the dynamics of myocardial contraction is hampered by an over-simplified interpretation of the intramural pattern of force generation. This limits the anaesthetist's knowledge of the direct effects of commonly used anaesthetics. A discrimination between a negative inotropic effect and cha...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/60.suppl_1.2s
更新日期:1988-01-01 00:00:00
abstract:BACKGROUND:The elderly are perceived as a high-risk group for procedural sedation. Concern exists regarding the safety of sedation of this patient group by emergency physicians, particularly when using propofol. METHODS:We analysed prospectively collected data on patients aged 75 yr or older undergoing sedation betwee...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1016/j.bja.2018.07.038
更新日期:2018-12-01 00:00:00
abstract::The effects of age on the dose of Org NC 45 were studied in 24 healthy, anaesthetized patients using an on-demand infusion of the drug which produced a stable twitch height of 10% of its initial value. The patients were allocated as follows: group I = age less than 40 yr; group II = 40-60 yr and group III = age greate...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/54.6.653
更新日期:1982-06-01 00:00:00
abstract:BACKGROUND:The perioperative management of two-stage oesophagectomy has not been standardized and the prevailing practice regarding the timing of extubation after the procedure varies. This audit has evaluated the outcome, in particular the respiratory morbidity and mortality, after immediate extubation in patients who...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeg091
更新日期:2003-04-01 00:00:00
abstract::Critical narrowing of the dependent airways was examined in anaesthetized dogs with closed chests. Two techniques were used, (a) "closing" volume (CV), measured from the expired nitrogen plateau and (b) tantalum bronchography, to measure the calibre of airways of 3-8 mm diameter in the upper (UZ), middle (MZ) and lowe...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/50.8.735
更新日期:1978-08-01 00:00:00
abstract::We have examined changes in plasma concentrations of calcium in seven anaesthetized pigs during i.v. infusion of irrigating fluid containing 1.5% glycine. Volumes infused were 875 ml at 20 min (22 ml kg-1), 1475 ml at 40 min and 2075 ml at 60 min (75 ml kg-1). Plasma concentrations of sodium decreased from 134.5 (SD 3...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/77.2.271
更新日期:1996-08-01 00:00:00
abstract::Following a paravertebral surgical incision, mature, female rats under ether anaesthesia were exposed to either 3% nitrous oxide, continuously for 48 h, or 50% nitrous oxide, 4 h each day for 7 days. For each exposure group, a similar number of rats was exposed to atmospheres containing no nitrous oxide. Wound healing...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/57.6.621
更新日期:1985-06-01 00:00:00
abstract::The effects of bolus doses of phenoperidine 1-2 mg i.v. either alone, or combined with pancuronium 2-4 mg, were investigated in seven patients in traumatic coma. Phenoperidine alone significantly reduced mean arterial pressure (MAP) by a mean (+/- SEM) of 13.2 (+/- 2.8) mm Hg. Overall there was no significant change i...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/59.5.592
更新日期:1987-05-01 00:00:00
abstract::The influence of halothane was studied on train-of-four fade during spontaneous recovery from neuromuscular block produced by atracurium in 42 children undergoing routine surgical procedures under general anaesthesia. The ulnar nerve was stimulated at the wrist, and compound electromyographic responses were recorded f...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/65.4.540
更新日期:1990-10-01 00:00:00
abstract:BACKGROUND:The molecular actions underlying the clinical effects of inhaled anaesthetics such as sevoflurane and isoflurane are not fully understood. Unexpected observations in positron emission tomography (PET) studies with [11C]AZD9272, a metabotropic glutamate receptor 5 (mGluR5) radioligand with possible affinity f...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1016/j.bja.2020.08.052
更新日期:2021-01-01 00:00:00
abstract::The determination of blood flow, i.e. cardiac output, is an integral part of haemodynamic monitoring. This is a review on noninvasive continuous cardiac output monitoring in perioperative and intensive care medicine. We present the underlying principles and validation data of the following technologies: thoracic elect...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aeu447
更新日期:2015-04-01 00:00:00
abstract::Hypothermia during prolonged surgery may be prevented by active and passive warming methods. We have compared randomly two types of occlusive body wraps in groups of 20 patients. One wrap had additional reflective properties which, by reducing radiative in addition to convective and evaporative heat loss, was expected...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/bja/79.6.766
更新日期:1997-12-01 00:00:00
abstract::We report a case of lumbar radiculopathy after zygapophyseal joint injections for chronic low back pain. The management of the patient and potential causes for the radiculopathy are discussed. The case acts as a reminder that the spinal nerve roots should be considered when performing intra-articular facet joint injec...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aem178
更新日期:2007-09-01 00:00:00
abstract:BACKGROUND:The Bispectral Index (BIS) is a proprietary index of anaesthesia depth, which is correlated with the level of consciousness and probability of intraoperative recall. The present study investigates the use of a neural network technique to obtain a non-proprietary index of the depth of anaesthesia from the pro...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章
doi:10.1093/bja/88.5.644
更新日期:2002-05-01 00:00:00
abstract:BACKGROUND:The use of lipid emulsions to reduce cardiac toxicity of local anaesthetics (LAs) has shown success in experimental studies and some clinical cases, and thus has been implemented in clinical practice. However, lipid treatment is usually given after the occurrence of neurological or cardiovascular symptoms of...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aet353
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND:The AirWay Scope (AWS) is a fibreoptic device that allows for intubation without alignment of the oral, pharyngeal, and tracheal axes. It may be useful for patients with an unstable cervical-spine (C-spine) or when C-spine movement is undesirable. This study was conducted to fluoroscopically evaluate upper C...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aen207
更新日期:2008-10-01 00:00:00