Abstract:
:A variant of a rebreathing/indicator-dilution technique was used to measure lung volume. Two or three indicators, which should have essentially the same pulmonary volume of distribution, were used. Gas compositions were measured by respiratory mass spectrometry and an extrapolation was used to allow for oxygen consumption. Carbon dioxide output, for which the extrapolation did not allow, caused considerable discrepancies between the apparent volumes of distribution of the three indicators: oxygen, nitrogen and argon. The discrepancies varied with the change in concentration imposed between the control and rebreathing periods. An iterative arithmetical correction is described, with its limitations. The approach offers a method of lung volume measurement which seems more applicable to anaesthesia than existing methods.
journal_name
Br J Anaesthjournal_title
British journal of anaesthesiaauthors
Black AM,Hahn CE,Maynard P,Scott ILdoi
10.1093/bja/56.3.289subject
Has Abstractpub_date
1984-03-01 00:00:00pages
289-98issue
3eissn
0007-0912issn
1471-6771pii
S0007-0912(17)42382-8journal_volume
56pub_type
杂志文章abstract:Background:Cognitive aids improve the technical performance of individuals and teams dealing with high-stakes crises. Hand-held electronic cognitive aids have rarely been investigated. A randomized controlled trial was conducted to investigate the effects of a smartphone application, named MAX (for Medical Assistance e...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aex256
更新日期:2017-11-01 00:00:00
abstract:BACKGROUND:Ketamine-induced neuroapoptosis has been attributed to diverse stress-related mechanisms. Glycogen synthase kinase-3β (GSK-3β) is a multifunctional kinase that is active in neuronal development and linked to neurodegenerative disorders. We hypothesized that ketamine would enhance GSK-3β-induced neuroapopotos...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aet057
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND:Assessments of labour pain focus on pain intensity, not on duration. We aimed to assess the importance labouring women apply to pain intensity and duration before labour and post-delivery. METHODS:Forty healthy women scheduled for labour induction were enrolled in this institutional review board-approved, p...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeu149
更新日期:2014-09-01 00:00:00
abstract::We have evaluated the level of state and trait anxiety, neuroticism, extroversion and coping style as predictors of the effectiveness of patient-controlled analgesia (PCA) in 110 patients undergoing total abdominal hysterectomy. After operation patients were allocated to receive pain control with either PCA or i.m. in...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章
doi:10.1093/bja/74.3.271
更新日期:1995-03-01 00:00:00
abstract:BACKGROUND:The posterolateral and medial aspect of the arm is supplied by the axillary (AXN) and intercostobrachial nerves (ICBN), which are not anaesthetised by an axillary brachial plexus block (ABPB). Blockade of the AXN and the ICBN has been reported in the quadrangular space (QS) posteriorly or by serratus plane b...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1016/j.bja.2018.06.006
更新日期:2018-10-01 00:00:00
abstract:BACKGROUND:LMA CTrach (CT), a modified version of the intubating LMA Fastrach, allows continuous video-endoscopy of the tracheal intubation procedure. We tested the hypothesis that the CT is efficient for tracheal intubation of morbidly obese patients who are at risk of a difficult airway. METHODS:After Ethics' Commit...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/ael219
更新日期:2006-11-01 00:00:00
abstract::We have compared the postoperative morphine requirements and analgesic efficacy of four doses of i.m. ketorolac 30 mg administered 6-hourly with placebo in a double-blind study of patients undergoing major or minor orthopaedic surgery. During the 24-h postoperative study period which began at the end of surgery, patie...
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/69.1.19
更新日期:1992-07-01 00:00:00
abstract::Dysregulation of the immuno-inflammatory response, as seen in sepsis, may culminate in host cell and organ damage. Lipopolysaccharide from Gram-negative bacterial cell walls induces gene activation and subsequent inflammatory mediator expression. Gene activation is regulated by a number of transcription factors at the...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aeg034
更新日期:2003-02-01 00:00:00
abstract::We have examined the correlation between the evoked electromyographic response in the first dorsal interosseous muscle of the hand, temperature and forearm position in 40 female patients after enflurane anaesthesia with spontaneous breathing. In 20 patients the supinated forearm with the wrist extended was immobilized...
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/72.4.407
更新日期:1994-04-01 00:00:00
abstract::Gastric (GP) and lower oesophageal sphincter pressures (LOSP) were measured in non-pregnant female volunteers (group I) and pregnant women with (group III) or without (group II) heartburn. Patients in early pregnancy had greater gastric pressures than group I. Mean barrier pressure (LOSP-GP) was significantly decrease...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/53.4.381
更新日期:1981-04-01 00:00:00
abstract:BACKGROUND:Chronic treatment with renin-angiotensin system (RAS) antagonists frequently causes deleterious hypotension during anaesthesia. We compared the effects of angiotensin II receptor antagonists (ARA) and angiotensin-converting enzyme inhibitors (ACEI) on neurohormonal levels and haemodynamics during cardiopulmo...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/ael268
更新日期:2006-12-01 00:00:00
abstract::Although most local anaesthetic drugs are generally regarded as vasodilators at their site of injection, they produce systemic effects characterized by increases in peripheral resistance, cardiac output, arterial pressure heart rate. The direct depressive effects of the drugs are counterbalanced by increased sympathet...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:
更新日期:1975-02-01 00:00:00
abstract:BACKGROUND:Signalling of several G-protein-coupled receptors of the Gq/11 family is time-dependently inhibited by local anaesthetics (LAs). Since LA-induced modulation of muscarinic m1 and m3 receptor function may explain their beneficial effects in clinical practice, such as decreased postoperative cognitive dysfuncti...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aet299
更新日期:2014-02-01 00:00:00
abstract::Spinal anaesthesia is the preferred anaesthetic technique for elective Caesarean deliveries. Hypotension is the most common side-effect and has both maternal and neonatal consequences. Different strategies have been attempted to prevent spinal-induced hypotension, including the use of low-dose bupivacaine. We conducte...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,meta分析,评审
doi:10.1093/bja/aer200
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:Growing evidences indicate that inhalational anaesthetics can enhance the growth and malignant potential of tumour cells and may affect tumour recurrence after surgery. Tumour stem cells play a vital role in tumour recurrence. This study investigates the effect of sevoflurane on glioma stem cells (GSCs) in v...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeu402
更新日期:2015-05-01 00:00:00
abstract:BACKGROUND:Pulse pressure variation (PPV) and stroke volume variation (SVV) are robust indicators of fluid responsiveness in mechanically ventilated supine patients. The aim of the study was to evaluate the ability of PPV and SVV to predict fluid responsiveness in mechanically ventilated patients in the prone position ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeq031
更新日期:2010-04-01 00:00:00
abstract:BACKGROUND:The pharmacokinetic profile of local anaesthetics is influenced by the mode of administration. We sought to compare the pharmacokinetics of two doses of ropivacaine after fascia iliaca compartment (FIC) block in children. METHODS:In this prospective, double-blind study, children received an FIC block as a p...
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/aeh066
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND:Clonidine is an alpha 2 adrenergic agonist with analgesic properties. This study aimed to see if the addition of clonidine to morphine when given by patient-controlled analgesia (PCA) would improve analgesia beyond the first 12 h after surgery. METHODS:Sixty patients undergoing lower abdominal surgery were ...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:2002-09-01 00:00:00
abstract::Isolated, cultured rat pancreatic islets of Langerhans were incubated in medium containing glucose 2 or 20 mmol litre-1 and with glucose supplemented with midazolam 10, 100 or 1000 ng ml-1. Glucose 20 mmol litre-1 with the addition of noradrenaline 10 mumol litre-1 was used as a control. In contrast with noradrenaline...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/70.2.221
更新日期:1993-02-01 00:00:00
abstract::We report the case of a morbidly obese patient who developed rhabdomyolysis with acute renal failure, hepatic dysfunction, and an increase of cardiac troponin-1 after total knee arthroplasty. Postoperative rhabdomyolysis has a wide range of triggers and differential diagnoses that should be considered by the anaesthes...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/ael274
更新日期:2006-12-01 00:00:00
abstract::The isolated rat hepatocyte model has been used to assess the hepatotoxicity of a number of i.v. anaesthetic induction agents. Ketamine, Althesin and CCI 12923 (minaxolone) all inhibited gluconeogenesis and urea formation from alanine. There was also a decrease in the cell ATP concentration, and a dose-related increas...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/51.8.733
更新日期:1979-08-01 00:00:00
abstract::The efficacy of nitroglycerine, verapamil and nifedipine in controlling post-sternotomy hypertension was compared in four groups of 20 patients anaesthetized with fentanyl 100 micrograms kg-1 undergoing elective coronary artery surgery. Vasodilators were started before surgery and adjusted to maintain systolic arteria...
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/58.3.267
更新日期:1986-03-01 00:00:00
abstract::We studied 34 patients undergoing elective repair of an abdominal aortic aneurysm under combined general anaesthesia and epidural block to evaluate the acute effects of diaspirin crosslinked haemoglobin (DCLHb) 50, 100 and 200 mg kg-1 i.v. Haemodynamic variables were measured continuously using pulmonary and radial ar...
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/83.5.702
更新日期:1999-11-01 00:00:00
abstract::A case of an infant receiving orthotopic heart transplantation with over-sized donor heart was reported. Left lower pulmonary venous obstruction after sternotomy closure was detected by transoesophageal echocardiography (TOE) and the decision to delay sternal closure was made and the clinical outcome was very satisfac...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/88.4.590
更新日期:2002-04-01 00:00:00
abstract::Blood transfusion saves many lives but carries significant risk of injury. Currently, red blood cell (RBC) concentrates can be stored up to 42 days. Concerns have recently been raised about the safety and efficacy of transfusing stored RBCs. Refrigerated storage results in a 'storage lesion' that is reflected by metab...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aet405
更新日期:2013-12-01 00:00:00
abstract::Many indices are used to quantify pulmonary oxygen transfer. Indices that use only measurements from arterial blood and inspired gas assume a constant C(a-v)O2. Though variations in C(a-v)O2 are recognized, indices such as PaO2/FIO2 remain popular and are often considered the best measure of pulmonary oxygen transfer ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/86.4.477
更新日期:2001-04-01 00:00:00
abstract:BACKGROUND:Recent research into memory formation under sedation has generated conflicting results. We investigated explicit and implicit memory in ICU patients during moderate to deep propofol sedation following cardiac surgery. METHODS:Two different methods of memory testing were used; (1). free-association (F-A) wor...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeg274
更新日期:2003-12-01 00:00:00
abstract:BACKGROUND:The solubility of desflurane compared with sevoflurane suggests more rapid recovery from desflurane anaesthesia. This could be important after prolonged anaesthesia and fast recovery may be advantageous in the elderly where slow recovery of mental function is a concern. We compared emergence from desflurane ...
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/aeg221
更新日期:2003-10-01 00:00:00
abstract::The rate of liquid-phase gastric emptying was determined in seven smokers from the rate of paracetamol absorption after abstaining overnight from cigarettes, and again after smoking two cigarettes within 30 min. There were no significant differences between the maximum paracetamol concentration, the time to reach maxi...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/57.11.1104
更新日期:1985-11-01 00:00:00
abstract::Plasma concentrations of amethocaine were measured after topical application of amethocaine cream 2 g (5% w/w) to the dorsum of the right hand of 10 adult volunteers. The cream was applied for 240 min and plasma was assayed for amethocaine and its metabolite p-n-butylaminobenzoic acid at 0, 30, 60, 90, 120 and 240 min...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/67.4.432
更新日期:1991-10-01 00:00:00