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 lower (LZ) zones. The point of airway "closure" at the junction of phases III and IV of the alveolar plateau coincided with an inflection in the diameter-lung volume curve of the airways in the most basal zone of the lung. This was accompanied by a sudden large increase in the calculated resistance of the airways in LZ compared with UZ. Following stimulation of the vagi CV increased and there was increased narrowing of airways, particularly in LZ. The addition of 0.5% halothane to the anaesthetic abolished the effect of vagal stimulation on CV and on airway resistance.
journal_name
Br J Anaesthjournal_title
British journal of anaesthesiaauthors
Jones JG,Graf PD,Lemen Rdoi
10.1093/bja/50.8.735subject
Has Abstractpub_date
1978-08-01 00:00:00pages
735-42issue
8eissn
0007-0912issn
1471-6771pii
S0007-0912(17)46164-2journal_volume
50pub_type
杂志文章abstract:BACKGROUND:Entrustable professional activities (EPAs) are commonly developed by senior clinicians and education experts. However, if postgraduate training is conceptualised as an educational alliance, the perspective of trainees should be included. This raises the question as to whether the views of trainees and superv...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1016/j.bja.2020.04.009
更新日期:2020-07-01 00:00:00
abstract::As the physiology of deliberate hypotension has been unravelled, and as each new pharmacological agent has become available which either depresses or blocks peripheral vascular tone, depresses myocardial performance, or interferes with the conducting tissues within the myocardium, its possible incorporation into the a...
journal_title:British journal of anaesthesia
pub_type: 历史文章,杂志文章
doi:10.1093/bja/47.7.745
更新日期:1975-07-01 00:00:00
abstract::Three anaesthetic techniques based on isoflurane were compared in outpatients undergoing laparoscopy. Sixty healthy patients were randomly allocated to receive isoflurane via mask (spontaneous respiration), via tracheal tube (spontaneous respiration) or via tracheal tube with controlled ventilation. Moderate hypercarb...
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/59.2.189
更新日期:1987-02-01 00:00:00
abstract::Percutaneous dilatational tracheostomy (PDT) is associated with a number of life-threatening complications. We present a case of massive and fatal arterial haemorrhage that occurred in the intensive care unit during an elective PDT on an 86-year-old woman following earlier evacuation of a traumatic subdural haematoma....
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeg074
更新日期:2003-04-01 00:00:00
abstract::Local reactions after i.v. injection of diazepam, flunitrazepam and isotonic saline were studied in patients who received extradural analgesia or general anaesthesia. The frequency of thrombophlebitis on the 1st, 3rd and 5th days after the injection of diazepam was 2.1%, 17.0% and 14.9% respectively, after flunitrazep...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章
doi:10.1093/bja/52.8.817
更新日期:1980-08-01 00:00:00
abstract::The neuromuscular blocking effects of equipotent doses of the three putative metabolites of vecuronium (3-hydroxy vecuronium, 17-hydroxy vecuronium and 3,17-dihydroxy vecuronium) were compared with those of an equipotent dose of vecuronium. Results obtained with the liver excluded from the circulation and after intrap...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/57.8.789
更新日期:1985-08-01 00:00:00
abstract::A simple mathematical model of the chest wall was constructed so that during tidal breathing the relative volume contributions of the rib cage and abdomen/diaphragm could be measured in man, using four mercury-in-rubber strain gauges around the trunk. From the dimensions of the trunk and the change in circumference de...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/51.5.391
更新日期:1979-05-01 00:00:00
abstract::We have measured the onset and extent of the miotic effect of morphine and alfentanil in conscious patients. Forty unpremedicated ASA I and II patients were allocated randomly to four groups to receive either i.v. saline (control group), morphine 0.1 mg kg-1, alfentanil 4.0 micrograms kg-1 or a combination of these do...
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/65.3.415
更新日期:1990-09-01 00:00:00
abstract:BACKGROUND:Multiple studies have shown that cerebral tissue oxygen saturation (Sct(O(2))) is decreased after phenylephrine treatment. We hypothesized that the negative impact of phenylephrine administration on Sct(O(2)) is affected by arterial blood carbon dioxide partial pressure (Pa(CO(2))) because CO(2) is a powerfu...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章
doi:10.1093/bja/aes023
更新日期:2012-05-01 00:00:00
abstract::The effect of incubation at 37 degrees C, 46 degrees C, 47 degrees C and 48 degrees C for 1 h on the osmotic fragility of blood was determined. Blood taken from volunteers into ACD and CPD was examined after 1, 7, 14 and 21 days of storage. In addition, 22-day-old blood stored in CPD was examined. The osmotic fragilit...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/50.8.815
更新日期:1978-08-01 00:00:00
abstract:BACKGROUND:Intraneural injection of local anaesthetic agents carries a risk of neurological complications. Early detection of intraneural needle-tip position is very important in the initial phase of injection. Ultrasound (US) characteristics for real-time detection of intraneural injections have been described, but on...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aes208
更新日期:2012-09-01 00:00:00
abstract:BACKGROUND:While volatile agents have been implicated in metastasis-enhancing effects on cancer cells, the effects of xenon are unknown. We investigated xenon- and sevoflurane-mediated effects on migration and expression of angiogenesis biomarkers in human breast adenocarcinoma cells. METHODS:MDA-MB-231 and MCF-7 cell...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeu191
更新日期:2014-07-01 00:00:00
abstract:BACKGROUND:The aim of this study was to explore difficulties at work from anaesthetists' own perspective and to examine how anaesthetists handle and cope with situations that are perceived as difficult and potentially stressful. METHODS:Two sets of interviews were conducted with 19 specialist anaesthetists in Sweden. ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,多中心研究
doi:10.1093/bja/aem233
更新日期:2007-10-01 00:00:00
abstract::The Myotest is a new nerve stimulator which can give train-of-four, single twitch (1 and 10 s) and tetanic stimuli. Power is supplied by standard batteries, which allow 200 h effective use. The impulse is unipolar constant current, and the amplitude can be adjusted between 0 and 40 mA. These factors, plus the electron...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/52.5.547
更新日期:1980-05-01 00:00:00
abstract:BACKGROUND:The diagnosis of abdominal compartment syndrome depends upon the demonstration of an elevated intra-abdominal pressure (IAP). Direct measures of IAP are impractical in the critical care unit; intravesical pressure (IVP) and intragastric pressure (IGP) should represent acceptable surrogate measures. IVP is th...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aem060
更新日期:2007-05-01 00:00:00
abstract:BACKGROUND:Desflurane at more than 1 minimum alveolar concentration (MAC) has been shown to prolong the QT interval, but it is unclear whether this is the case at lower concentrations. The aim of this study was to determine whether desflurane concentrations of <1 MAC affect tracheal intubation-induced prolongation of t...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aep355
更新日期:2010-02-01 00:00:00
abstract::We have compared, in a double-blind study, the efficacy of flumazenil with that of aminophylline in antagonizing the effects of midazolam in 60 patients (ASA I-II, mean age 66 yr) undergoing transurethral resection of prostate under spinal anaesthesia. All patients received midazolam 0.075 mg kg-1 i.v. and the test dr...
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/66.5.591
更新日期:1991-05-01 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::Acute perioperative changes in arterial pressure occur frequently, particularly in patients with cardiovascular disease or those receiving vasoactive medications, or in relation to certain cardiovascular surgical procedures. Both hypo- and hypertension are common in patients undergoing carotid surgery because of uniqu...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aep012
更新日期:2009-04-01 00:00:00
abstract::Intra-oral masses in neonates can seriously compromise the airway, potentially causing hypoxia and death if not recognized and managed appropriately. We report a case in which an intra-oral mass was diagnosed on antenatal ultrasound scan. Preparation for delivery involved a multidisciplinary team approach, with a stra...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/83.6.951
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:The aim of this study is to test the hypothesis that a standard 30-min break in a routine 7.5 h period of work makes a difference in cognitive function. METHODS:In a double-blinded, cross-over trial 30 residents in anaesthesia were randomized to receive or not to receive a 30-min break between the assessmen...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/ael151
更新日期:2006-09-01 00:00:00
abstract::In a randomized study of patients undergoing Caesarean section, either enflurane (mean 0.24 MAC-h) or halothane (mean 0.23 MAC-h) and 50% nitrous oxide in oxygen were administered to women (n = 12) with severe pre-eclampsia-eclampsia and to 16 healthy pregnant patients with normal renal and hepatic function. No eviden...
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/56.6.587
更新日期:1984-06-01 00:00:00
abstract::The identification of a serum marker to assist in the diagnosis of cerebral injury after cardiac surgery is potentially useful. S100 protein is an early marker of cerebral damage. It is released after cardiac surgery performed under cardiopulmonary bypass (CPB). Its level is correlated with the duration of CPB, deep c...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/85.2.287
更新日期:2000-08-01 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::In the dog, pancuronium 0.2 mg/kg increased left ventricular systolic pressure and systemic arterial pressure, but did not change central venous pressure. Repeated doses produced diminishing responses and eventually no change in arterial pressure. After tachyphylaxis was established, a pressor response to pancuronium ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/48.12.1143
更新日期:1976-12-01 00:00:00
abstract::In inflammation, leucocytes containing opioid peptides migrate into the tissue. Opioid peptides can be released and bind to opioid receptors on peripheral nerve terminals, which counteracts inflammatory pain. Migration of opioid peptide-containing leucocytes is controlled by chemokines and adhesion molecules. Neurokin...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aen078
更新日期:2008-07-01 00:00:00
abstract::Human plasma cholinesterase (E.C. 3.1.1.8) was shown to be inhibited by physiological concentrations of propanidid and suxamethonium using a colourimetric assay at 25 degrees C and pH 7.2 unit with butyrylthiocholine as substrate. Propanidid inhibited the enzyme in a non-competitive manner (I50 = 2.0 mmol litre-1; app...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/51.3.181
更新日期:1979-03-01 00:00:00
abstract:BACKGROUND:Treprostinil sodium improves haemodynamics and symptoms in pulmonary arterial hypertension (PAH) patients, but its subcutaneous (s.c.) administration can produce severe local site pain, and lead to discontinuation of vital treatment. Treprostinil is a prostacyclin analogue which stimulates prostacyclin recep...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aet308
更新日期:2014-02-01 00:00:00
abstract::A series of 443 spinal anaesthetics is described. The procedures included operative vaginal delivery, removal of retained placenta and a miscellaneous group common to most obstetric units. Failure to provide effective relief of pain occurred in 5.2% of patients. There was one potentially serious complication, but with...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/51.6.531
更新日期:1979-06-01 00:00:00
abstract::This study has examined the effect of hydration on immediate recovery from anaesthesia in two groups of 15 patients undergoing therapeutic abortion. A standard anaesthetic technique was administered. Patients in group I received no preoperative fluid; those in group II received, before anaesthesia, 20 ml kg-1 of 4% gl...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章
doi:10.1093/bja/68.6.576
更新日期:1992-06-01 00:00:00