Abstract:
BACKGROUND:With the increasing prevalence of children who are overweight and with obesity, anaesthesiologists must determine the optimal dosing of medications given the altered pharmacokinetics and pharmacodynamics in this population. We therefore determined the single dose of dexmedetomidine that provided sufficient sedation in 95% (ED95) of children with and without obesity as measured by a minimum Ramsay sedation score (RSS) of 4. METHODS:Forty children with obesity (BMI >95th percentile for age and gender) and 40 children with normal weight (BMI 25th-84th percentile), aged 3-17 yr, ASA physical status 1-2, undergoing elective surgery, were recruited. The biased coin design was used to determine the target dose. Positive responses were defined as achievement of adequate sedation (RSS ≥4). The initial dose for both groups was dexmedetomidine 0.3 μg kg-1 i.v. infusion for 10 min. An increment or decrement of 0.1 μg kg-1 was used depending on the responses. Isotonic regression and bootstrapping methods were used to determine the ED95 and 95% confidence intervals (CIs), respectively. RESULTS:The ED95 of dexmedetomidine for adequate sedation in children with obesity was 0.75 μg kg-1 with 95% CI of 0.638-0.780 μg kg-1, overlapping the CI of the ED95 estimate of 0.74 μg kg-1 (95% CI: 0.598-0.779 μg kg-1) for their normal-weight peers. CONCLUSIONS:The ED95 values of dexmedetomidine administered over 10 min were 0.75 and 0.74 μg kg-1 in paediatric subjects with and without obesity, respectively, based on total body weight. CLINICAL TRIAL REGISTRATION:ChiCTR1800014266.
journal_name
Br J Anaesthjournal_title
British journal of anaesthesiaauthors
Wu B,Shan J,Zhou Q,Wang Ldoi
10.1016/j.bja.2020.11.037subject
Has Abstractpub_date
2021-01-22 00:00:00eissn
0007-0912issn
1471-6771pii
S0007-0912(20)30989-2pub_type
杂志文章abstract::We have compared, in a randomized study in 26 patients, immediate and late postoperative recovery after elective laparoscopic cholecystectomy using the gasless, mechanical abdominal wall lift method with conventional carbon dioxide pneumoperitoneum. After the gasless method, tracheal extubation was performed significa...
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/77.5.576
更新日期:1996-11-01 00:00:00
abstract:BACKGROUND:Fast onset and short duration are prominent properties of the amide-type local anaesthetic articaine. Similar to bupivacaine, a hyperbaric solution of articaine may produce faster onset and shorter duration of spinal anaesthesia than a plain solution. METHODS:Patients undergoing open inguinal hernia repair ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aen294
更新日期:2008-12-01 00:00:00
abstract:BACKGROUND:Forty-eight ASA I-II patients undergoing total abdominal hysterectomy (TAH) were studied in a double blind, randomized placebo controlled trial of parecoxib for postoperative analgesia. METHODS:All patients were given propofol 2-4 mg kg(-1) i.v., a non-depolarizing muscle relaxant, morphine 10 mg i.v. and p...
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/aeg139
更新日期:2003-06-01 00:00:00
abstract::To understand the cellular and molecular basis of the anaesthetic state, it is important to remember that, in the intact CNS, synapses operate within elaborate nerve networks. From the data presented above, it is evident that block of impulse conduction in presynaptic fibres does not explain the effects of most anesth...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/71.1.134
更新日期:1993-07-01 00:00:00
abstract::The anaesthetic risks of acromegaly include difficulties in airway management, hypertension, and cardiac, gastrointestinal and renal problems. To estimate the incidence of major complications in this rare group of patients, we reviewed 28 patients with acromegaly who had pituitary tumour excision over a 10-yr period. ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/oxfordjournals.bja.a013400
更新日期:2000-02-01 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::We have compared the effects of the anaesthetic gases nitrogen and argon on adenosine diphosphate (ADP)-induced human blood platelet aggregation with the effects of the non-anaesthetic gas helium. All three gases showed dose-dependent inhibition of platelet aggregation. For nitrogen and argon there was a linear relati...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/64.1.77
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND:Short-axis ultrasound-guided placement of central venous catheters (CVCs) is widely accepted as safe practice. However, utilizing the long-axis approach could further improve safety, as it allows for better visualization of the needle as it is advanced to the target vessel. However, the long-axis approach ha...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aer329
更新日期:2012-01-01 00:00:00
abstract::Twenty consecutive patients undergoing cardiac surgery with cardiopulmonary bypass (CPB) were allocated at random to group 1 (n = 10, high inspired oxygen fraction (FIO2) after CPB), or group 2 (n = 10, moderate FIO2 after CPB). The effects of each FIO2 on arterial and mixed venous concentrations of endothelin-1 (ET-1...
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/84.5.565
更新日期:2000-05-01 00:00:00
abstract::A simple method of adapting a pressure-cycled ventilator of the flow generator type to ventilate patients on a circle-absorber anaesthetic system is described. Standard lengths of corrugated black rubber tubing are placed between the ventilator and the circle-absorber is deadspace, replacing the reservoir bag. The per...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/49.3.273
更新日期:1977-03-01 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::We have studied the effects of alcuronium in 10 healthy, non-anaesthetized volunteers after they had been taking oral pyridostigmine 30 mg 8 hourly. The responses of adductor pollicis were recorded using an isolated forearm procedure (IFP) during onset and recovery of neuromuscular block produced by 1.5 mg of relaxant...
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/66.3.365
更新日期:1991-03-01 00:00:00
abstract::We have investigated the incidence of regurgitation of gastric contents during general anaesthesia administered via a laryngeal mask airway (LMA) or face mask and Guedel airway in 56 patients with no risk factors for regurgitation. Patients swallowed a gelatin capsule containing methylene blue 10 min before induction ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/69.3.314
更新日期:1992-09-01 00:00:00
abstract:BACKGROUND:It was hypothesized that xenon would stabilize mean arterial pressure (MAP) in haemorrhagic shock, recovery, and volume resuscitation, because a higher MAP has been observed with xenon, when compared with isoflurane anaesthesia. The responses to haemorrhage and subsequent volume replacement were therefore co...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aei127
更新日期:2005-06-01 00:00:00
abstract::Hypertensive patients were monitored for myocardial ischaemia during anaesthesia and surgery with the V5 lead of a standard electrocardiograph. Myocardial ischaemia was detected in 11 of 39 untreated hypertensive patients and in four of seven receiving therapy with a diuretic, but in none of 44 receiving atenolol. Fou...
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/61.6.675
更新日期:1988-12-01 00:00:00
abstract:BACKGROUND:The objective of this study was to test whether non-invasive assessment of respiratory stroke volume variation (ΔrespSV) by oesophageal Doppler monitoring (ODM) can predict fluid responsiveness during surgery in a mixed population. The predictive value of ΔrespSV was evaluated using a grey zone approach. ME...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aes301
更新日期:2013-01-01 00:00:00
abstract::Respiratory mass spectrometry and on-line computation were used to estimate lung volume in normal subjects by a rebreathing technique, using oxygen, nitrogen and argon as indicators. The computation had previously been tested in a numerical model. In real normal lungs, it performed well enough for practical purposes, ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/56.5.509
更新日期:1984-05-01 00:00:00
abstract::The effect of the i.v. administration of methylene blue dye on haemoglobin oxygen saturation, measured by a pulse oximeter was investigated. The absorption spectra of various concentrations of haemoglobin, oxyhaemoglobin and methylene blue were compared. The amount of 660-nm light absorbed by methylene blue was suffic...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/60.4.439
更新日期:1988-03-01 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::Zomepirac 100 mg and dihydrocodeine 30 mg were compared with placebo in a controlled randomized, double-blind, single-dose postoperative study. Patients continued to receive either zomepirac or dihydrocodeine for pain relief for 5 days at home in a double-blind study, being allowed to titrate the consumption of tablet...
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/57.4.412
更新日期:1985-04-01 00:00:00
abstract::A new anaesthetic gas scavenging system is described. The resistance of the system appears to be low. When input gas flow rate in the system was zero or 150 litre min-1, misuse of the system produced pressure changes at its collecting points of 26 Pa subatmospheric and 630 Pa above atmospheric pressure, respectively. ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/55.7.681
更新日期:1983-07-01 00:00:00
abstract::Arterial blood and expired gas samples were taken from 20 patients before operation and on the first day after upper abdominal surgery. After operation the patients were studied breathing air and also breathing 35% oxygen from a venturi-type mask. Preoperative Pao2 with age was exaggerated by operation. Pao2 after ope...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/47.4.491
更新日期:1975-04-01 00:00:00
abstract::The trachea of a man who had cut his own throat was successfully intubated using a fibreoptic laryngoscope after attempts at conventional oral intubation had failed. The advantages of the fibreoptic instrument and the method of use in such an injury are discussed. ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/50.5.511
更新日期:1978-05-01 00:00:00
abstract::All currently available aminoacylaniline local anaesthetics, except lignocaine, contain a chiral centre but are used as racemates, a fact usually ignored in pharmacokinetic studies. This study reports the cardiovascular effects, and the regional and total body clearances of the enantiomers of bupivacaine determined at...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/67.3.247
更新日期:1991-09-01 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::Thirty-two patients received lumbar extradural anaesthesia for elective Caesarean section. The results obtained from this series were compared with those from a similar (control) group of parturients who received general anaesthesia. The extradural group (mothers and infants) were metabolically acidaemic relative to c...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/51.4.367
更新日期:1979-04-01 00:00:00
abstract::When using endobronchial anaesthesia for the management of transthoracic endoscopic sympathectomy (TES), excessive insufflation of carbon dioxide into the pleural space may cause haemodynamic instability, hypoxaemia and tension pneumothorax. We prospectively studied an alternative technique using a tracheal tube, i.v....
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章
doi:10.1093/bja/74.2.141
更新日期:1995-02-01 00:00:00
abstract:BACKGROUND:Pressure recording analytical method (PRAM) is a novel, arterial pulse contour-based method for measuring cardiac output (CO). Validation studies of PRAM in children are few, and have not assessed both absolute accuracy and ability to track changes in CO across a broad case mix. We aimed to compare CO as mea...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aes420
更新日期:2013-03-01 00:00:00
abstract::In rats injected s.c. with formalin, behavioural correlates of the amount and pattern of Fos-like immunoreactivity (Fos-Ll) (molecular responses to pain) were studied to test if early phase treatment with 75% nitrous oxide or 2% halothane, or both, suppressed subsequent spinal sensitization. Rats were allocated to fou...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/76.1.99
更新日期:1996-01-01 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