Abstract:
BACKGROUND:Naloxone, an opioid antagonist, has a cardiovascular pressor effect and has been used in various types of shock states. The aim was to determine the non-opioid effect on direct cardiac muscle contractility and explore the mechanism using guinea pig right ventricular papillary muscles. METHODS:With institutional approval, isometric contractile force was measured in modified normal and 26 mM K+ Tyrode solution at various stimulation rates. The effects of naloxone on sarcoplasmic recticulum function were evaluated by measuring rested-state contraction in low Na+ (25 mM) Tyrode solution and rapid cooling contracture in modified normal Tyrode solution. Normal and slow action potentials (APs) were measured using conventional microelectrode technique. Patch clamp study was performed to examine the direct effect on Ca2+ current in cardiac ventricular myocytes. RESULTS:Naloxone (50, 100, and 200 microM) caused a concentration-dependent depression of peak force and maximal rate of force development. Modest depression, approximately 20%, was shown in rested-state contraction in low Na+ Tyrode solution. Naloxone (100 microM) modestly depressed the rapid cooling contracture to 80 +/- 3% of baseline, accompanied by prolongation of time to peak contracture by approximately 37%. In 26 mM K+ Tyrode solution, naloxone (100 microM) markedly and selectively depressed the late force development. While naloxone (100 microM) did not alter the amplitude and dV/dt-max in normal and slow APs at 0.25 Hz, AP duration was prolonged significantly. In patch clamp experiment, naloxone (50 microM) depressed Ca2+ current by approximately 50%. CONCLUSIONS:The direct myocardial depressant effect of naloxone appeared to be in part caused by depression of Ca2+ influx through cardiac membrane. Sarcoplasmic reticulum function appeared to be modestly depressed.
journal_name
Acta Anaesthesiol Scandjournal_title
Acta anaesthesiologica Scandinavicaauthors
Kim KJ,Chung NS,Park WKdoi
10.1111/j.1399-6576.2004.00267.xsubject
Has Abstractpub_date
2004-01-01 00:00:00pages
102-10issue
1eissn
0001-5172issn
1399-6576pii
267journal_volume
48pub_type
杂志文章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::Anesthesia and recovery during the first hour after propofol and methohexital anesthesia for termination of pregnancy, lasting about 12 min, were compared, the latter in a double-blind manner by means of psychomotor tests (coin counting and continuous auditory reaction time). Muscle movements and hiccups were seen sig...
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.1399-6576.1990.tb03072.x
更新日期:1990-04-01 00:00:00
abstract:BACKGROUND:Post-operative catheter-related bladder discomfort (CRBD) causes increased emergence agitation. Muscarinic receptor activation is a major mechanism in CRBD development. Experimental studies showed that sevoflurane has anti-muscarinic effects whereas propofol does not. Our hypothesis was that sevoflurane anae...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章,随机对照试验
doi:10.1111/aas.12922
更新日期:2017-08-01 00:00:00
abstract:BACKGROUND:Dispatching centres were fused into one of the 112 entity, which caused concerns regarding whether the medical calls could be processed effectively also in the new centre. We evaluated the effects of the reform on key performance criteria in medical calls. METHODS:This observational study in the Helsinki Di...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2010.02243.x
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND:Involutional changes of peripheral nervous system occur with aging. The aim of the study was to determine the minimum effective volume of local anesthetic required to offer an effective ultrasound-guided supraclavicular brachial plexus block in 50% of middle-aged (< 50 years) and elderly (> 65 years) patient...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章
doi:10.1111/aas.12109
更新日期:2013-07-01 00:00:00
abstract::In an intensive-care setting we studied the effects of ketoprofen, a dual inhibitor of cyclooxygenase and lipoxygenase, on circulatory and respiratory changes during established endotoxic shock in sheep. Two groups (n = 7 in each) were exposed to E. coli endotoxin, which caused a sharp increase in pulmonary artery pre...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1994.tb03833.x
更新日期:1994-01-01 00:00:00
abstract:AIM:To determine whether the bispectral index (BIS) can be monitored to predict and indicate an awareness reaction to laryngeal mask airway-Fastrach (LMA-Fastrach) insertion and intubation at BIS values between 40 and 60. METHODS:Fifty-one American Society of Anesthesiologists' (ASA) class I or II status patients aged...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2007.01441.x
更新日期:2007-11-01 00:00:00
abstract::Intrapulmonary gas distribution was studied in 10 extremely obese patients: (1) during spontaneous breathing awake; (2) during anaesthesia with controlled ventilation and zero end-expiratory pressure (ZEEP), and (3) as under (2) but with a positive end-expiratory pressure of approximately 15 cmH2O (PEEP). Gas distribu...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1977.tb01218.x
更新日期:1977-01-01 00:00:00
abstract:BACKGROUND:A propofol target-controlled infusion (TCI) is often proposed for the management of difficult airway intubation and fibreoptic intubation under anaesthesia and spontaneous ventilation. No data are available about sevoflurane. The aim of the present study was to compare propofol and sevoflurane as hypnotics d...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1399-6576.2006.01186.x
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:Short-term infusion of NG-monomethyl-L-arginine (L-NMMA) reversibly inhibits endogenous nitric oxide (NO) production in humans. We studied responses to more long-lasting (60 min) infusions, at doses high enough to cause effective inhibition of endogenous NO. METHODS:Eight healthy volunteers had catheters (p...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1997.tb04852.x
更新日期:1997-10-01 00:00:00
abstract::A previously healthy woman (20 years old) was admitted to our hospital with several fractures after a car accident. She was sedated with propofol, etc. in doses ranging from 1.4 to 5.1 mg/kg/h for 88 h. She developed multiple organ failure with rhabdomyolysis and died. This case fulfils (except acidosis) the criteria ...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2006.00904.x
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND:To evaluate the effect of a recruitment maneuver (RM) with constant positive inspiratory pressure and high positive end-expiratory pressure (PEEP) on oxygenation and static compliance (Cs) in patients with severe acute respiratory distress syndrome (ARDS). METHODS:Eight patients with ARDS ventilated with lu...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.0001-5172.2004.0305.x
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND:Postoperative nausea and vomiting (PONV) is a commonly observed adverse effect of anaesthesia. This study was designed to evaluate the efficacy of granisetron administered orally for preventing PONV in female patients undergoing major gynaecological surgery. METHODS:In a prospective, randomized, placebo-con...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验,收录出版
doi:10.1111/j.1399-6576.1998.tb05297.x
更新日期:1998-07-01 00:00:00
abstract::Patients undergoing surgery under regional anaesthesia often receive narcotic analgesics for premedication which may modify the sedative and amnesic effects of intravenously administered diazepam. Sixty-two patients scheduled for upper extremity surgery under intravenous regional anaesthesia received 0.15 mg/kg of dia...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1981.tb01660.x
更新日期:1981-08-01 00:00:00
abstract:BACKGROUND:Use of ultrasound by anaesthesiologists performing regional blocks is rapidly gaining popularity. The aims of this review were to summarize and update accumulating evidence on ultrasound-guided nerve blocks, with an emphasis on the clinical relevance of the results and to critically appraise changing standar...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章,评审
doi:10.1111/j.1399-6576.2008.01666.x
更新日期:2008-07-01 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:It has been shown that when cardiac output (CO) decreases during continuous positive pressure ventilation (CPPV), its regional distribution adapts with a favouring of vital organs. Does epidural blockade modify this adaptation? METHODS:Regional blood flows were assessed by the microsphere technique (15 micr...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1034/j.1399-6576.2001.450115.x
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:Variations or disturbances in intrathoracic and extracardiac pressures (ECP) occur in critically ill and anaesthetised patients. There are uncertainties concerning the analysis of left ventricular pressure-volume relationship (LVPVR) and the calculation of systolic function parameters when conducted without ...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1034/j.1399-6576.2001.045007868.x
更新日期:2001-08-01 00:00:00
abstract:BACKGROUND:The precise mechanism by which sevoflurane exerts its effects in the human brain remains unknown. In the present study, we quantified the effects of sevoflurane on regional cerebral glucose metabolism (rGMR) in the human brain measured with positron emission tomography. METHODS:Eight volunteers underwent tw...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2010.02208.x
更新日期:2010-05-01 00:00:00
abstract::Liver cirrhosis and other chronic hepatic diseases are followed in a subset of affected patients by gas exchange abnormalities resulting from a syndrome called hepatopulmonary syndrome (HPS). The structural basis of this clinical entity is an alteration of pulmonary vasculature resulting in abnormal vasodilatation and...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章,评审
doi:10.1111/j.0001-5172.2004.00282.x
更新日期:2004-02-01 00:00:00
abstract::The effect of nitrous oxide on blood flow in the cerebral cortex, the cerebellum and the brain stem was evaluated in a rat model. Catheters were surgically implanted in advance to avoid influence from other anaesthetics. The animals were housed in a plastic tube where they were allowed to breathe spontaneously. Blood ...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1991.tb03389.x
更新日期:1991-11-01 00:00:00
abstract:UNLABELLED:In this prospective, consecutive study, 191 patients were interviewed before and after surgery (orthopaedic, gynaecological, abdominal and urological operations) about their attitude to and the quality of received pain relief, respectively. In addition, nurses working in the surgical units involved in the st...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1993.tb03737.x
更新日期:1993-05-01 00:00:00
abstract::Systemic capillary leak syndrome (SCLS) is a very rare disorder also known as Clarkson's disease. The condition is characterized by recurrent episodes of severe capillary hyperpermeability resulting in severe hemoconcentration, hypoalbuminemia, hypovolemia and shock. We describe a 41-year-old previously healthy man wh...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.2010.02214.x
更新日期:2010-05-01 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::The effects of clonidine, a central alpha 2-adrenoreceptor agonist, on haemodynamic and catecholamine changes were assessed during emergence from anaesthesia, a period which is associated with increased sympathetic nervous discharge, hypertension and tachycardia. According to a double-blind randomized design, 32 patie...
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.1399-6576.1991.tb03241.x
更新日期:1991-01-01 00:00:00
abstract:INTRODUCTION:Advanced life support (ALS) guidelines recommend ultrasound to identify reversible causes of cardiac arrest. Right ventricular (RV) dilatation during cardiac arrest is commonly interpreted as a sign of pulmonary embolism. The RV is thus a focus of clinical ultrasound examination. Importantly, in animal stu...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/aas.12911
更新日期:2017-08-01 00:00:00
abstract::The need to conserve a patient's own blood and avoid homologous transfusion is now well recognized. Therefore, techniques designed to reduce requirements for homologous blood transfusions have been developed. One of the methods is autotransfusion of shed mediastinal blood after open-heart surgery. The objectives of th...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1995.tb04230.x
更新日期:1995-11-01 00:00:00
abstract:BACKGROUND:The Patient Injury Act has been in effect in Finland since 1 May 1987. This legislation is a no-fault compensation scheme and implies that if a patient during the course of medical treatment suffers any injury as a result of that treatment he or she may file a claim to the Patient Insurance Association (PIA)...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1997.tb04722.x
更新日期:1997-04-01 00:00:00
abstract:BACKGROUND:It has been shown that spinal reflexes such as the H-reflex predict motor responses to painful stimuli better than cortical parameters derived from the EEG. The precise concentration-dependence of H-reflex suppression by anaesthetics, however, is not known. Here we investigated this concentration-response re...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章
doi:10.1111/j.1399-6576.2004.00372.x
更新日期:2004-05-01 00:00:00
abstract::Infusion of endotoxin elicits granulocytopenia followed by increased numbers of granulocytes in peripheral blood. The purpose of this study was to investigate the redistribution and sequestration of granulocytes in the tissues following E. coli endotoxin induced sepsis. From 16 rabbits granulocytes were isolated, labe...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1994.tb04017.x
更新日期:1994-11-01 00:00:00