Abstract:
BACKGROUND:Dexmedetomidine is an α-2-receptor agonist which might be used as an additive to local anaesthetics for various regional anaesthetic techniques. We therefore designed this prospective, double-blinded, controlled volunteer study to investigate the effects of dexmedetomidine as an adjuvant to ropivacaine on peripheral nerve block. METHODS:Ultrasound-guided ulnar nerve block (UNB) was performed in 36 volunteers with either 3 ml ropivacaine 0.75% (R), 3 ml ropivacaine 0.75% plus 20 µg dexmedetomidine (RpD), or 3 ml ropivacaine 0.75% plus systemic 20 µg dexmedetomidine (RsD). UNB-related sensory and motor scores were evaluated. RESULTS:Sensory onset time of UNB was not different between the study groups, whereas motor onset time was significantly faster in Group RpD when compared with the other study groups [mean (sd)] [21 (15) vs 43 (25) min in Group RsD and 47 (36) min in Group R, P<0.05 Group RpD vs other groups]. The duration of sensory block was 350 (54) min in Group R, 555 (118) min in Group RpD, and 395 (40) min in Group RsD (P<0.01 Group RpD vs other groups, P<0.05 Group RsD vs Group R). Motor block duration was similar to the duration of sensory block. CONCLUSIONS:A profound prolongation of UNB of ∼60% was detected with perineural dexmedetomidine when added to 0.75% ropivacaine. The systemic administration of 20 µg dexmedetomidine resulted in a prolongation of ∼10% during UNB with 0.75% ropivacaine. Eudra-CT No.: 2012-000030-19.
journal_name
Br J Anaesthjournal_title
British journal of anaesthesiaauthors
Marhofer D,Kettner SC,Marhofer P,Pils S,Weber M,Zeitlinger Mdoi
10.1093/bja/aes400subject
Has Abstractpub_date
2013-03-01 00:00:00pages
438-42issue
3eissn
0007-0912issn
1471-6771pii
S0007-0912(17)32771-Xjournal_volume
110pub_type
杂志文章,随机对照试验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::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:Reported outcome benefits after surgical pleth index (SPI, GE Healthcare, Helsinki, Finland) guided anaesthesia are conflicting. One potential explanation may be the lack of evidence for the selection of meaningful SPI target values. A recently published trial found an SPI cut-off of 30 as a 'best-fit' to pr...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1016/j.bja.2018.10.066
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:This study compared the efficacy of topical anaesthesia with levobupivacaine 0.75% vs lidocaine 2% during cataract surgery by phacoemulsification. METHODS:A prospective, randomized, double-blind study comparing two agents for topical anaesthesia in cataract surgery. Two hundred and forty-six consecutive pat...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aen369
更新日期:2009-02-01 00:00:00
abstract:BACKGROUND:Left ventricular (LV) pressure-volume (PV) loops were used to compare the functional effects that accompany the cardioprotection seen with desflurane, sevoflurane, and propofol in a rabbit preparation of coronary ischaemia-reperfusion (IR). METHODS:Male New Zealand White rabbits (n=48) were anaesthetized wi...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aep238
更新日期:2009-11-01 00:00:00
abstract:BACKGROUND:Transitions into and out of the anaesthetised state exhibit resistance to state transitions known as neural inertia. As a consequence, emergence from anaesthesia occurs at a consistently lower anaesthetic concentration than induction. Motivated by stochastic switching between discrete activity patterns obser...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1016/j.bja.2018.02.035
更新日期:2018-07-01 00:00:00
abstract:BACKGROUND:Pain on injection of propofol is unpleasant. We hypothesized that propofol infusion pain might be prevented by infusing remifentanil before starting the propofol infusion in a clinical setting where target-controlled infusions (TCI) of both drugs were used. A prospective, randomized, double-blind, placebo-co...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aem293
更新日期:2007-12-01 00:00:00
abstract::In a double-blind, randomized study, we have compared the efficacy of transdermal hyoscine in the prevention of nausea and vomiting with placebo in 60 young, ASA I-II patients after middle ear surgery during general anaesthesia. In the placebo group, 27% and 43% of patients suffered from nausea and vomiting, respectiv...
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/73.6.763
更新日期:1994-12-01 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::Following a paravertebral surgical incision, mature, female rats under ether anaesthesia were exposed to either 3% nitrous oxide, continuously for 48 h, or 50% nitrous oxide, 4 h each day for 7 days. For each exposure group, a similar number of rats was exposed to atmospheres containing no nitrous oxide. Wound healing...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/57.6.621
更新日期:1985-06-01 00:00:00
abstract::A mathematical model of a subject breathing from a circle system has been used to follow the course of anaesthetic uptake during the simulated administration of 60% nitrous oxide, 2% halothane and 2% methoxyflurane, under non-rebreathing conditions and with fresh gas flows to the circle system of between 8 and 0.25 li...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/58.10.1167
更新日期:1986-10-01 00:00:00
abstract::The influence of halothane was studied on train-of-four fade during spontaneous recovery from neuromuscular block produced by atracurium in 42 children undergoing routine surgical procedures under general anaesthesia. The ulnar nerve was stimulated at the wrist, and compound electromyographic responses were recorded f...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/65.4.540
更新日期:1990-10-01 00:00:00
abstract:BACKGROUND:There is little advice on the posture to be used when intubating the trachea. Does the stance used depend on experience? METHODS:Twenty-six subjects with varying experience of intubation were photographed during laryngoscopy of an intubation training mannequin. Posture was measured from the photographs and ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:
更新日期:2002-11-01 00:00:00
abstract::We compared psychomotor recovery after total intravenous anaesthesia (TIVA) with remifentanil/propofol and balanced anaesthesia (BAL) with etomidate/fentanyl/isoflurane in 40 patients, ASA I-III, aged > or =80 yr undergoing elective cataract surgery. Recovery times were recorded and psychomotor recovery was assessed a...
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/86.2.203
更新日期:2001-02-01 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::Cryoprecipitate, originally developed as a therapy for patients with antihaemophilic factor deficiency, or haemophilia A, has been in use for almost 50 yr. However, cryoprecipitate is no longer administered according to its original purpose, and is now most commonly used to replenish fibrinogen levels in patients with...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aeu158
更新日期:2014-12-01 00:00:00
abstract::We have assessed tracheal intubating conditions in 60 ASA I or II patients after induction of anaesthesia with propofol 2.5 mg kg-1 and alfentanil 10 or 20 micrograms kg-1 with or without i.v. lignocaine 1 mg kg-1. No neuromuscular blocking agents were administered. Patients were allocated randomly to four groups: gro...
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/70.2.163
更新日期:1993-02-01 00:00:00
abstract:BACKGROUND:We studied the potential neuroprotective effects of halothane and desflurane, compared with the awake state, on infarct size following 2 h of intraluminal middle cerebral artery occlusion (MCAo) and 22 h of reperfusion. METHODS:Male Sprague-Dawley rats were anaesthetized with desflurane or halothane, intuba...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeg186
更新日期:2003-09-01 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::The safety of aspirin therapy in neuraxial anaesthesia has been historically questioned, and the current recommendations are still heterogeneous. A comprehensive review of clinical evidence and a comparative analysis of European and American guidelines were performed. Low-dose aspirin produces a selective, complete an...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aev348
更新日期:2015-11-01 00:00:00
abstract::The serum concentrations of fazadinium and its metabolites were measured in 14 surgical patients with end-stage renal failure and in 11 patients free from kidney disease undergoing abdominal surgery. A two-compartment open model was used in the pharmacokinetic analysis of the data. The elimination half-life (T 1/2 bet...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/51.10.943
更新日期:1979-10-01 00:00:00
abstract::The Gapmeter Lab Kit series of flowmeters has been calibrated using air. Two of the flowmeters were also calibrated using argon and oxygen as the priming gases. Linear calibration graphs have been obtained for all the Gapmeters. The two low flow Gapmeters are extremely susceptible to back-pressure. ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/49.3.277
更新日期:1977-03-01 00:00:00
abstract::This paper describes the use of solenoid valves for the production of binary gas mixtures. The system is controlled by a microprocessor and is capable of delivering accurate flows and concentrations of gases over the ranges commonly used in anaesthesia. Since the flow produced by the valves is pulsatile, a system for ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/58.9.1041
更新日期:1986-09-01 00:00:00
abstract::Use of inhaled nitric oxide for treatment of pulmonary hypertension in adult critical illness is limited by its mode of delivery and high costs, prompting evaluation of alternative therapies. We report the use of oral sildenafil in a patient with severe secondary pulmonary hypertension and right ventricular dysfunctio...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aei114
更新日期:2005-06-01 00:00:00
abstract:BACKGROUND:Echocardiography has been shown to positively impact on the management of the critically ill patient. However, many published studies have a significant bias towards inclusion of cardiothoracic patients. We present an audit of the impact of echocardiography on the management of patients in a district general...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aen378
更新日期:2009-03-01 00:00:00
abstract::Six male patients were studied on the morning following upper abdominal surgery for highly selective vagotomy. Nalbuphine hydrochloride was infused i.v. at different rates that increased progressively in each hour over a 4-h period. In the last 15 min of each hour, the plasma nalbuphine concentrations were almost stea...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/59.11.1356
更新日期:1987-11-01 00:00:00
abstract::We have used mivacurium in four myasthenic patients presenting for thymectomy. Supramaximal single twitch stimulation was applied to the ulnar nerve at the wrist and the force of contraction of the adductor pollicis was measured. After an initial bolus dose of 30 micrograms kg-1 (approximately one-fifth of the normal ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/73.4.494
更新日期:1994-10-01 00:00:00
abstract:BACKGROUND:Early postoperative negative behaviour in preschool children after general anaesthesia is a common problem. The distinction between emergence delirium (ED) and pain is difficult, but management differs between the two. The aim of the current analysis was to identify individual observational variables that ca...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aev552
更新日期:2016-03-01 00:00:00
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 lowe...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/50.8.735
更新日期:1978-08-01 00:00:00
abstract::In order to clarify the relative contribution of hepatic metabolism to the short term disposition of methohexitone, we have measured hepatic blood flow during induction of anaesthesia with a 1.5-mg kg-1 i.v. bolus dose of methohexitone. Median hepatic clearance was 1.01 litre min-1 and hepatic extraction 87%. As a con...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/69.5.478
更新日期:1992-11-01 00:00:00