Abstract:
:Arterial PO2 (PaO2) has been related to inspired oxygen concentration (FIO2 range 0.21-0.60) in 20 patients, breathing spontaneously, while recovering from a range of conditions treated in an intensive therapy unit. There was a highly significant linear trend (P < 0.001) for the mean venous admixture ("virtual shunt"), calculated from the iso-shunt diagram (model A), to increase from 0.11 to 0.19 as FIO2 decreased from 0.60 to 0.21. As this appeared to be caused by relative ventilation/perfusion (V/Q) mismatch, we prepared a second model (model B) with a variable two-compartment relative V/Q mismatch in addition to a shunt. Regression of the degree of mismatch on the shunt gave good agreement between predicted and observed PaO2 values (mean bias -0.17 kPa, pooled within patient SD 1.22). Model B is now proposed to extend the applicability of the iso-shunt diagram for FIO2 values less than 0.35. Published postoperative PaO2 data from other workers showed good agreement with our final model (mean bias 0.10 kPa, pooled SD 0.41). The new diagram may therefore have wide applicability in the field of anaesthesia and intensive care.
journal_name
Br J Anaesthjournal_title
British journal of anaesthesiaauthors
Petros AJ,Doré CJ,Nunn JFdoi
10.1093/bja/72.5.515subject
Has Abstractpub_date
1994-05-01 00:00:00pages
515-22issue
5eissn
0007-0912issn
1471-6771pii
S0007-0912(17)43842-6journal_volume
72pub_type
临床试验,杂志文章,随机对照试验abstract:BACKGROUND:We defined the nature of the pharmacological interaction after intrathecal co-administration of ginsenosides with clonidine, and clarified the contribution of the α-2 adrenoceptors on the effect of ginsenosides. METHODS:Pain was evoked by injection of a formalin solution (5%, 50 μl) into the hindpaw of male...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeq367
更新日期:2011-03-01 00:00:00
abstract::The rapid detection and evaluation of patients presenting with perioperative neurological dysfunction is of great clinical relevance. Biomarkers have been defined as biological molecules that can be used as an indicator of new onset or progression of a biological process or effect of treatment. Biomarkers have become ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aer338
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Moderate to deep sedation has been recommended during endoscopic submucosal dissection (ESD). However, it is often accompanied by adverse events such as respiratory depression or aspiration pneumonia. This study investigated the respiratory complications and ESD outcomes of two sedation protocols: moderate s...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeu555
更新日期:2015-07-01 00:00:00
abstract::We randomized women having elective Caesarean section to receive either no preload (control group, n=33) or 4% gelatin solution (Gelofusine) 15 ml kg(-1) (colloid group, n=35) i.v. before spinal anaesthesia. Intravenous metaraminol was titrated at 0.25-0.75 mg min(-1) to maintain systolic arterial pressure (SAP) in th...
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/87.5.772
更新日期:2001-11-01 00:00:00
abstract::We report a case of massive pulmonary embolism occurring at the time of graft reperfusion in a patient undergoing orthotopic liver transplantation. The clinical diagnosis of pulmonary embolus was aided by on-table echocardiography. Cardiopulmonary bypass and surgical embolectomy prevented her death. We discuss the dif...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/80.5.685
更新日期:1998-05-01 00:00:00
abstract::We have studied post-tetanic count (PTC) and single twitch height at the onset of reflex movement to carinal stimulation after administration of vecuronium with five different types of anaesthesia. Seventy-five adult patients were allocated randomly to five groups of 15 patients each, to receive one of the following a...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章,随机对照试验,收录出版
doi:10.1093/bja/72.6.688
更新日期:1994-06-01 00:00:00
abstract:BACKGROUND:Malposition of tracheostomy tubes is difficult to detect at the bedside and may contribute to eventual device misplacement. Endoscopic examination can be undertaken via tracheoscopic (T-view) or trans-laryngeal (L-view) approach, offering more precise detail regarding positioning within the airway. The aims ...
journal_title:British journal of anaesthesia
pub_type: 评论,信件
doi:10.1093/bja/aew336
更新日期:2017-01-01 00:00:00
abstract::Nicorandil, a nicotinamide nitrate derivative, relaxes vascular smooth muscle and reduces cardiac muscle contractility by increasing membrane potassium conductance, probably by activating ATP-sensitive potassium channels. In this prospective, randomized, double-blind, placebo-controlled clinical study, we examined the...
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/86.3.332
更新日期:2001-03-01 00:00:00
abstract:BACKGROUND:Mechanosensory thalamocortical relay neurones (TCNs) receive glutamatergic excitatory input and are subjected to gamma-aminobutyric acid (GABA)Aergic inhibitory input. This study assessed the effects of an increase in concentration of isoflurane on thalamic excitatory and inhibitory mechanisms. METHODS:TCNs...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aef170
更新日期:2002-08-01 00:00:00
abstract::The results of the ventilatory management of babies, obtained in the first 3 years of a neonatal surgical intensive care unit, are assessed. Overall mortality figures and detailed examination of the cause of death in individual diagnostic groups support a selective approach to intermittent positive pressure ventilatio...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/52.3.273
更新日期:1980-03-01 00:00:00
abstract::The effect of ketamine analgesia on gastric emptying was assessed in five healthy volunteers. Gastric emptying, estimated indirectly by the absorption of orally administered paracetamol, was not significantly delayed following administration of i.m. ketamine when compared with placebo. ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/53.12.1321
更新日期:1981-12-01 00:00:00
abstract:BACKGROUND:The surgical pleth index (SPI) is a measurement of intraoperative nociception. Evidence of its usability in children is limited. Given that the autonomic nervous system is still developing during the first years of life, the performance of the SPI on small children cannot be concluded from studies carried ou...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aew215
更新日期:2016-09-01 00:00:00
abstract:BACKGROUND:Dynamic variables reliably predict fluid responsiveness (FR) in adults, but no data are available regarding their performance in infants. The aim of this prospective study was to assess whether pulse pressure variation (PPV) and stroke volume variation (SVV), in contrast to central venous pressure (CVP) and ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aer371
更新日期:2012-01-01 00:00:00
abstract::We present a new pattern of nerve stimulation--double burst stimulation (DBS)--to detect residual neuromuscular block manually. The DBS consists of two short lasting, 50-Hz tetanic stimuli or bursts separated by a 750-ms interval. The response to this pattern of stimulation is two single separated muscle contractions ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/62.3.274
更新日期:1989-03-01 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::A 55-yr-old man received a left supraclavicular brachial plexus block with 0.42% bupivacaine; he had profound motor and sensory block 26 h after injection; complete recovery occurred at 40 h. ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/63.5.604
更新日期:1989-11-01 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::Twelve hydrocephalic patients undergoing hydrodynamic studies and shunt procedures during general anaesthesia were subjected to short term observations of the cerebrovascular effects of isoflurane. Intraventricular pressure (IVP), arterial pressure (AP); cerebral perfusion pressure (CPP = AP-IVP), end-tidal PCO2, Cere...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/59.10.1208
更新日期:1987-10-01 00:00:00
abstract::Postoperative management following major surgery in patients with neuromuscular disorders associated with scoliosis is frequently complicated by sputum retention and ventilatory failure. This report demonstrates the successful perioperative management of an 11-yr-old boy with type II spinal muscular atrophy undergoing...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aef227
更新日期:2002-10-01 00:00:00
abstract::Placental blood flow was measured during the first stage of normal labour using a xenon-133 clearance technique before and after segmental extradural analgesia. Analgesia was produced with 0.5% plain bupivacaine in eight patients and with 0.5% bupivacaine--adrenaline in 10 patients. Segmental extradural analgesia with...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/50.6.563
更新日期:1978-06-01 00:00:00
abstract::Progressive obstruction of an axillary vein following an axillary approach to brachial plexus blockade is described. At surgical exploration, the axillary vein was narrowed with an aneurysm of its wall. It is likely that, during the performance of the block, the needle penetrated the adventitia of the vein, causing a ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/56.9.1051
更新日期:1984-09-01 00:00:00
abstract::The metabolic effect of infusing 1.0-1.5 litre of Hartmann's solution to normal subjects and those with maturity onset diabetes has been studied during surgery. It was found that the use of Hartmann's solution after operation was associated with a 7.5 mmol litre-u increase in plasm glucose concentration compared with ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/50.2.185
更新日期:1978-02-01 00:00:00
abstract::Buprenorphine 0.3 mg or fentanyl 0.125 mg i.v. were used to supplement nitrous oxide anaesthesia in a double-blind investigation of 40 patients undergoing major abdominal surgery. Initially both narcotics appeared to suppress tachycardia and increased arterial pressure in response to surgery, but 80% of the patients w...
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/52.4.453
更新日期:1980-04-01 00:00:00
abstract:BACKGROUND:Hemidiaphragmatic paresis after ultrasound-guided interscalene brachial plexus block is reported to occur in up to 100% of patients. We tested the hypothesis that an injection lateral to the brachial plexus sheath reduces the incidence of hemidiaphragmatic paresis compared with a conventional intrafascial in...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aew028
更新日期:2016-04-01 00:00:00
abstract::We have examined interactions between midazolam, propofol and alfentanil using two end-points of light sedation (hypnosis) and anaesthesia. Quantal dose-response curves were determined in 400 female patients for the drugs individually and in combination. At the hypnotic end-point, interactions were analysed by fitting...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/69.2.162
更新日期:1992-08-01 00:00:00
abstract::The use of atracurium during major abdominal surgery was assessed in 20 infants with hepatic dysfunction caused by biliary atresia. An initial dose of 0.6 mg kg-1 provided excellent intubating conditions in all patients. Subsequent neuromuscular blockade was monitored with a peripheral nerve stimulator and incremental...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/58.11.1214
更新日期:1986-11-01 00:00:00
abstract:BACKGROUND:During normothermic cardiopulmonary bypass (CPB), the effect on propofol pharmacokinetics of changes in its binding to plasma proteins is consistent with the predictions of the well-stirred model of hepatic elimination for nonrestrictively cleared drug. However, whether changes in binding lead to clinically ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aei293
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND:Cardiac output (CO) monitoring by uncalibrated arterial pressure waveform analysis (APCO) using the FloTrac/Vigileo™ is feasible in patients with intracranial haemorrhage, but the results of validation studies are contradictory. The aim of the present study was to analyse the clinical agreement between the i...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aer170
更新日期:2011-10-01 00:00:00
abstract::The analgesic efficacy of a 150-mg meptazinol suppository was compared with that of morphine 10 mg i.m. in the treatment of moderate postoperative pain. Two groups of 15 female patients took part in a 4-h, randomized double-blind, double-dummy study on the first day after elective abdominal hysterectomy. Meptazinol di...
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/60.5.542
更新日期:1988-04-01 00:00:00
abstract:BACKGROUND:During preanaesthesia evaluation at an outpatient clinic, information is summarized and structured. We aimed to estimate the effectiveness of this process by determining the proportion of patients presenting for surgery who had valid preoperative anaesthesia assessment records, and also the proportion of pat...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeq200
更新日期:2010-11-01 00:00:00