Abstract:
BACKGROUND:Previous work had shown dysequilibrium between the arterial blood and brain concentrations of the intravenous anaesthetic agent propofol following its rapid administration over 2 min to sheep. The extent of dysequilibrium was examined following slower administration as a constant rate 45-min infusion (10 mg/min). METHODS:Six sheep were prepared with arterial and sagittal sinus (effluent from the brain) blood sampling catheters and a Doppler flow probe for measuring an index of cerebral blood flow. Propofol concentrations in arterial and sagittal sinus blood during and after the infusions were measured using high-performance liquid chromatography with fluorescence detection. Brain concentrations were calculated from these concentrations and cerebral blood flow using direct mass balance methods. RESULTS:There was dysequilibrium between the arterial blood and brain concentrations until approximately 30 min after the start of the infusion, with marked hysteresis between the arterial blood and brain concentrations for the duration of the study. The equilibrium half-life between the blood and the brain was 3.5 min, which is comparable to the value of 4.3 min derived from the earlier rapid administration data, suggesting there was no time dependency in the kinetics of cerebral uptake. The mass of propofol entering the brain via arterial blood was the same as the mass leaving the brain via sagittal sinus blood, suggesting minimal metabolism of propofol in the brain of sheep. CONCLUSION:It is clear that pharmacokinetic analysis based on arterial blood concentrations alone cannot accurately account for the concentrations of propofol at its site of action in the brain.
journal_name
Acta Anaesthesiol Scandjournal_title
Acta anaesthesiologica Scandinavicaauthors
Ludbrook GL,Upton RN,Grant C,Martinez Adoi
10.1034/j.1399-6576.1999.430215.xsubject
Has Abstractpub_date
1999-02-01 00:00:00pages
206-11issue
2eissn
0001-5172issn
1399-6576journal_volume
43pub_type
杂志文章abstract:BACKGROUND:Following sensational media reports, particularly from Sweden, there has been discussion in Scandinavia during the last couple of years about whether anesthesiologists have shorter life spans than other medical specialists. METHODS:Survival analysis (Cox regression) from the master file of the Norwegian Med...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1034/j.1399-6576.2002.461005.x
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Cyclosporine A has generated intense interest in the field of cardioprotection due to its ability to protect the mitochondria at reperfusion by blocking the opening of the mitochondrial permeability transition pore. The aim of our study was to examine the cardioprotective effect of Sandimmun, a clinically av...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2010.02241.x
更新日期:2010-08-01 00:00:00
abstract::The relationships between self-reported assessments of acute anxiety and several biochemical and physiological indicators of stress reaction were investigated in pregnant women at term in connection with spinal analgesia for caesarean section. Fear and apprehension were statistically significantly associated only with...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1990.tb03163.x
更新日期:1990-11-01 00:00:00
abstract:BACKGROUND:Mortality rates in critically ill adult patients admitted to the intensive care unit (ICU) remains high, and numerous patient- and disease-related adverse prognostic factors have been identified. In recent years, studies in a variety of emergency conditions suggested that outcome is dependent on the time of ...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/aas.13119
更新日期:2018-08-01 00:00:00
abstract::Various in vitro, ex vivo and in vivo tests have shown that organic nitrates attenuate platelet function. Because organic nitrates are commonly administered to patients undergoing cardiac surgery, the postoperative bleeding tendency observed in these patients might be strengthened by nitrates. Therefore, we compared t...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1399-6576.1995.tb04137.x
更新日期:1995-07-01 00:00:00
abstract::Central venous catheters of two types were inserted through basilic or cephalic veins punctured at the fossa cubiti in 61 patients: 39 soft silicone elastomer (S.E.) and 22 stiffer polyethylene (P.E.) catheters were compared regarding their thrombogenicity. Mean duration of catheterization was 6.5 days. Radiological t...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1983.tb01927.x
更新日期:1983-04-01 00:00:00
abstract:BACKGROUND:Perioperative fluid therapy is controversially debated in surgery. In malnourished and hypovolaemic patients, a restrictive fluid regimen may lead to hypoperfusion and increased incidence of complications. The present prospective cohort study was performed to assess whether pre-operative i.v. fluid administr...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2008.01759.x
更新日期:2008-10-01 00:00:00
abstract:BACKGROUND:Failed intubation remains one cause of anaesthesia-related morbidity and mortality. In a recent survey in Denmark, 20% of respondents reported preventable mishaps in airway management. METHODS:Assessment of the airway, and its documentation, as well as the availability of various equipment to manage a diffi...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.0001-5172.2004.0337.x
更新日期:2004-03-01 00:00:00
abstract::The importance of serum cholinesterase activity in burned patients was evaluated in relation to anaesthesia. Anaesthesia included a repeated administration of suxamethonium. Thirty-two patients with an estimated area of burn between 3 and 72% were studied during 39 anaesthetic procedures. A statistically significant i...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1975.tb05237.x
更新日期:1975-01-01 00:00:00
abstract::A Lack breathing system with an injector device has been used for controlled ventilation. Oxygen was delivered through an injector device, which was positioned between the Lack circuit and the catheter mount, whilst nitrous oxide was delivered from the anaesthetic machine. The circuit was fully tested on two model lun...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1984.tb02087.x
更新日期:1984-08-01 00:00:00
abstract::We investigated the mechanism of the action of volatile anesthetics on the airway smooth muscle constricted by an antigen and leukotriene-D4 (LTD4). Excised tracheal rings from ovalbumin-sensitized guinea pigs were suspended in eight tissue baths. Halothane or isoflurane was aerated into four tissue baths, while the r...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1995.tb04240.x
更新日期:1995-11-01 00:00:00
abstract::In a controlled study, the effects of THIP (a synthetic gamma-aminobutyric-acid-agonist) on respiratory function (ventilatory response to CO2), first detection of stimulation (electrical stimulation of a tooth), pain threshold, magnitude of maximal tolerated pain stimulation, and plasma cortisol, prolactin and glucose...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1983.tb01896.x
更新日期:1983-02-01 00:00:00
abstract::We encountered two cases of acute pancreatitis in patients with Cushing's disease following transnasal transsphenoidal hypophysectomy. In both cases propofol was used in bolus doses, and is thought to be the probable factor for its development. Since elevated cortisol levels in Cushing's disease poses a threat for pan...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2005.00751.x
更新日期:2005-10-01 00:00:00
abstract:BACKGROUND:We hypothesized that, compared with propofol, desflurane prolongs the antegrade accessory pathway effective refractory period (APERP) in children undergoing radiofrequency catheter ablation for Wolff-Parkinson-White (WPW) syndrome. METHODS:In this randomized crossover study, children aged 4.1-16.1 years und...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章,随机对照试验
doi:10.1111/aas.13023
更新日期:2018-02-01 00:00:00
abstract::It can be shown that the assumption of an arbitrary value for VDphys/VT during IPPV can lead to unacceptable degrees of hypo- or hyperventilation. We investigated 33 adult patients scheduled for major non-thoracic surgery, to see if any simple tests could be used to predict VDphys/VT during anaesthesia/IPPV. Fifteen w...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1981.tb01606.x
更新日期:1981-02-01 00:00:00
abstract::An open reservoir for the collection and evacuation of anaesthetic gases permits leakage to room air. The use of a closed reservior for the removal of overspill gas from anaesthetic circuits is described. Calibrated gas evacuation is carried out through an ejector flowmeter from the anesthetic circuit or from a closed...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1976.tb05058.x
更新日期:1976-01-01 00:00:00
abstract:BACKGROUND:Paracervical block is widely used in gynaecological interventions on cervix and uterus. Many surgeons add adrenaline 100 μg or pitressin 3-5 IU in a total volume of 10-20 mL to reduce total blood loss. We wanted to examine haemodynamic stability in healthy patients given bupivacaine with and without adrenali...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章,随机对照试验
doi:10.1111/aas.13259
更新日期:2019-03-01 00:00:00
abstract:BACKGROUND:Management of pain in the pre-hospital setting is often inadequate. In 2011, ambulance personnel were authorized to administer intravenous fentanyl in the Central Denmark Region. The aim of this study was to evaluate the efficacy and safety of intravenous fentanyl administered by ambulance personnel. METHOD...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/aas.12662
更新日期:2016-04-01 00:00:00
abstract:BACKGROUND:Inhalation of hyperbaric oxygen (HBO) has been reported to decrease arterial oxygen tension (PaO(2)) in the early period after exposure. The current investigation aimed at evaluating whether and to what extent arterial blood gases were affected in mechanically ventilated intensive care patients within 6 h af...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2006.01197.x
更新日期:2007-01-01 00:00:00
abstract::The effects of enflurane anaesthesia on central circulation, total oxygen uptake, splanchnic circulation and splanchnic oxygen uptake were studied in 10 artifically ventilated dogs, basally anaesthetized with thiopental and nitrous oxide. Hepatic arterial, superior mesenteric arterial and portal venous blood flows wer...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1979.tb01416.x
更新日期:1979-02-01 00:00:00
abstract:BACKGROUND:Carbon monoxide poisoning is associated with high mortality and a substantial risk for brain damage in survivors. Evidence for acute brain dysfunction may be obtained by measuring concentrations of suitable biochemical markers. We hypothesized that increased serum concentrations of Neuron-specific enolase (N...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2004.00362.x
更新日期:2004-04-01 00:00:00
abstract:BACKGROUND:Major hindfoot and ankle surgery is associated with severe postoperative pain, which is effectively alleviated by combined sciatic and saphenous nerve blockade. Local anaesthetics with added dexamethasone consistently prolongs the duration of pain relief compared to local anaesthetics alone. However, whether...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章,随机对照试验
doi:10.1111/aas.13054
更新日期:2018-04-01 00:00:00
abstract::The haemodynamic adaptation early after aorto-coronary bypass surgery, with special reference to the influence of body temperature on postoperative vasoconstriction, was studied in 20 patients. Cardioplegia arrest was used in all cases. Eleven patients were cooled to 30 degrees C during cardiopulmonary bypass, and nin...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1979.tb01485.x
更新日期:1979-12-01 00:00:00
abstract::The Laryngeal Mask Airway (LMA) is a new type of oropharyngeal airway that provides an alternative to endotracheal intubation and standard mask anaesthesia in certain cases. Once the patient is adequately anaesthetised, it can be inserted blindly, without recourse to laryngoscopy or muscle relaxants. Anaesthetists of ...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1990.tb03170.x
更新日期:1990-11-01 00:00:00
abstract:BACKGROUND:Pain is a sensory and emotional experience that is influenced by physiologic, sensory, affective, cognitive, socio-cultural, and behavioral factors. Consistent with the perspective to improve the postoperative pain control, the present study has the purpose of assessing the effect of presurgical clinical fac...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1034/j.1399-6576.2002.461015.x
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Cardiac dysfunction during septic shock is well described but the underlying mechanisms still remain to be resolved. This study was conducted to elucidate the involvement of endothelin in cardiac function during endotoxin shock by the use of endothelin receptor antagonism. METHODS:Anaesthetised and haemodyn...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1034/j.1399-6576.2001.451015.x
更新日期:2001-11-01 00:00:00
abstract:INTRODUCTION:The aim of the present multicentre study is to assess health-related quality of life in patients with community-acquired sepsis, severe sepsis, or septic shock (CAS) 6 months after discharge from the intensive care unit (ICU) and to compare the health-related quality of life of the ICU survivors with CAS w...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章,多中心研究
doi:10.1111/aas.12164
更新日期:2013-10-01 00:00:00
abstract::A new system for continuous measurement of oxygen uptake was tested. The tidal volumes delivered by the system, the accuracy of the oxygen sensor cell, measurement of the oxygen uptake at different inspired oxygen concentrations, and comparative tests of oxygen uptake using the Fick principle were studied. Judging fro...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1987.tb02511.x
更新日期:1987-01-01 00:00:00
abstract:BACKGROUND:ST changes related to ischemia at different heart rates (HRs) have not been well described. We aimed to analyze ST dynamic changes by vectorcardiography (VCG) during pacing-induced HR changes for subjects with proven coronary artery disease (CAD) and without (non-CAD). METHODS:Symptomatic CAD patients sched...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2007.01507.x
更新日期:2008-02-01 00:00:00
abstract:BACKGROUND:Severe postoperative pain is a well-known problem following shoulder surgery. This study evaluates the clinical efficacy of continuous interscalene brachial plexus block, patient-controlled analgesia, and morphine (i.v. and i.m.) for postoperative analgesia in this setting. METHODS:Thirty patients, schedule...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1034/j.1399-6576.1999.430304.x
更新日期:1999-03-01 00:00:00