Abstract:
BACKGROUND:A pulmonary hypertensive crisis (PHC) can be a life-threatening condition. We established a PHC model by exposing rats with monocrotaline (MCT)-induced pulmonary hypertension to acute hypoxia, and investigated the effects of vasopressin, phenylephrine, and norepinephrine on the PHC. METHODS:Four weeks after MCT 60 mg kg-1 administration i.v., right ventricular systolic pressure (RVSP), systolic BP (SBP), mean BP (MBP), cardiac index (CI), and pulmonary vascular resistance index (PVRI) were measured. PHC defined as an RVSP exceeding or equal to SBP was induced by changing the fraction of inspiratory oxygen to 0.1. Rats were subsequently treated by vasopressin, phenylephrine, or norepinephrine, followed by assessment of systemic haemodynamics, isometric tension of femoral and pulmonary arteries, cardiac function, blood gas composition, and survival. RESULTS:PHC was associated with increased RV dilatation and paradoxical septal motion. Vasopressin increased MBP [mean (standard error)] from 52.6 (3.8) to 125.0 (8.9) mm Hg and CI from 25.4 (2.3) to 40.6 (1.8) ml min-1 100 g-1 while decreasing PVRI. Vasopressin also improved RV dilatation, oxygenation, and survival in PHC. In contrast, phenylephrine increased MBP from 54.8 (2.3) to 96.8 (3.2) mm Hg without improving cardiac pump function. Norepinephrine did not alter MBP. Vasopressin contracted femoral but not pulmonary arteries, whereas phenylephrine contracted both arterial beds. Hence, improvements with vasopressin in PHC might be associated with decreased PVRI and selective systemic vasoconstriction. CONCLUSIONS:In this rat model of a PHC, vasopressin, but not phenylephrine or norepinephrine, resulted in better haemodynamic and vascular recovery.
journal_name
Br J Anaesthjournal_title
British journal of anaesthesiaauthors
Sugawara Y,Mizuno Y,Oku S,Goto Tdoi
10.1016/j.bja.2019.01.014subject
Has Abstractpub_date
2019-04-01 00:00:00pages
437-447issue
4eissn
0007-0912issn
1471-6771pii
S0007-0912(19)30051-0journal_volume
122pub_type
杂志文章abstract::We have examined interactions between midazolam, propofol and alfentanil using two end-points of light sedation (hypnosis) and anaesthesia. Quantal dose-response curves were determined in 400 female patients for the drugs individually and in combination. At the hypnotic end-point, interactions were analysed by fitting...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/69.2.162
更新日期:1992-08-01 00:00:00
abstract:BACKGROUND:The Bispectral Index (BIS) monitor has been suggested as a potential tool to measure depth of sedation in paediatric intensive care unit (PICU) patients. The primary aim of our observational study was to assess the difference in BIS values between the left and right sides of the brain. Secondary aims were to...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aen035
更新日期:2008-05-01 00:00:00
abstract::The effects of the i.v. infusion of insulin, 70 mu. kg-1h-1 for the first 60 min and 35 mu. kg-1h-1 subsequently, on the metabolic and endocrine responses to gynaecological surgery were investigated. In comparison with a control group of patients, the insulin infusion caused a marked decrease in circulating glucose, n...
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/55.10.939
更新日期:1983-10-01 00:00:00
abstract:BACKGROUND:The perioperative management of two-stage oesophagectomy has not been standardized and the prevailing practice regarding the timing of extubation after the procedure varies. This audit has evaluated the outcome, in particular the respiratory morbidity and mortality, after immediate extubation in patients who...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeg091
更新日期:2003-04-01 00:00:00
abstract::The calculation of pharmacokinetic parameters after a bolus injection of fentanyl allowed an i.v. infusion scheme which guarantees analgesia for the entire duration of surgery, with the advantage of steady plasma concentration and body content. In the initial phase after bolus injection, the serum concentration decrea...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/52.10.1021
更新日期:1980-10-01 00:00:00
abstract::Metoclopramide hastens emptying of the stomach. Since it may be given to patients before operation, the sedative and toxic effects of 10- and 20-mg does given i.m. were studied in patients and student volunteers. Saline and diazepam 10 mg were used as placebo and reference drugs. Neither dose of metoclopramide had as ...
journal_title:British journal of anaesthesia
pub_type: 临床试验,杂志文章
doi:10.1093/bja/46.7.509
更新日期:1974-07-01 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:The low and moderate doses of dexmedetomidine reduce arterial pressure and heart rate (HR), suggesting attenuation of sympathetic activity and dominance of cardiac-vagal activity. These autonomic responses under dexmedetomidine sedation may attenuate cardiovascular reflex responses to temporal reduction in a...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/aep210
更新日期:2009-10-01 00:00:00
abstract::Advances in cannabis research have paralleled developments in opioid pharmacology whereby a psychoactive plant extract has elucidated novel endogenous signalling systems with therapeutic significance. Cannabinoids (CBs) are chemical compounds derived from cannabis. The major psychotropic CB delta-9-tetrahydrocannabino...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aen119
更新日期:2008-07-01 00:00:00
abstract::The experimental effort that has been expended in investigating the effects of general anaesthetics on LGICs has been enormous over the past decade. Members of all three LGIC superfamilies have been examined using electrophysiological techniques. Anaesthetics that have been examined include volatile anaesthetics, gase...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aef161
更新日期:2002-07-01 00:00:00
abstract::In order to evaluate the use of the post-tetanic count (PTC) method during repetitive administration of vecuronium, we studied 20 patients allocated randomly to one of two groups: 10 patients received droperidol-fentanyl anaesthesia (control group); 10 other patients were given droperidol-fentanyl anaesthesia modified...
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/65.4.487
更新日期:1990-10-01 00:00:00
abstract::The new emulsion formulation of di-isopropyl phenol (propofol) was compared with methohexitone and thiopentone for induction of anaesthesia in day cases. Propofol produced significantly smoother induction of anaesthesia, but caused more cardiovascular and respiratory depression. Pain on injection was significantly les...
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/57.8.725
更新日期:1985-08-01 00:00:00
abstract::Haemodynamic effects may occur after stellate ganglion block (SGB) arising from autonomic imbalance and local anaesthetic infiltration to barosensitive areas. We report seven patients who developed severe hypertension (systolic arterial pressure >200 mm Hg) after SGB in our pain clinic service. We postulate that diffu...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aei134
更新日期:2005-06-01 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:Dexmedetomidine (DEX) has been shown to provide good perioperative haemodynamic stability with decreased intraoperative opioid requirements. It may have neural protective effects, and thus may be a suitable anaesthetic adjuvant to neurosurgical anaesthesia. METHODS:Fifty-four patients scheduled for elective...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1093/bja/ael220
更新日期:2006-11-01 00:00:00
abstract::This communication presents evidence in support of a neuropathic basis for the myopathy associated with malignant hyperpyrexia (MH). Muscle from MH susceptible individuals showed a reduced calcium uptake by the sarcoplasmic reticulum. There was a reduced concentration of phosphocreatine and ATP and an increased concen...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/47.4.475
更新日期:1975-04-01 00:00:00
abstract::Fresh gas flows of nitrous oxide, oxygen and halothane at 6, 3, 2 and 1 litre/min were introduced into a circle absorber system. Spontaneous respiration and IPPV were studied and a regression of inspired on delivered oxygen concentration % was calculated. The difference between delivered and inspired oxygen concentrat...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/48.3.217
更新日期:1976-03-01 00:00:00
abstract::This is the report of a 55-yr-old female who developed severe myotonia and dystonia after general anaesthesia. Before starting on gabapentin therapy for a neuropathic pain condition, she had undergone numerous uneventful general anaesthetics. Since receiving treatment with gabapentin, she has experienced severe moveme...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aem130
更新日期:2007-08-01 00:00:00
abstract:BACKGROUND:Recent investigations showed that isoflurane can induce pharmacological preconditioning. The present study aimed to compare the potency of four different halogenated anaesthetics to induce preconditioning. METHODS:Anaesthetized open-chest rabbits underwent 30 min of coronary artery occlusion followed by 3 h...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:
更新日期:2002-09-01 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
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journal_title:British journal of anaesthesia
pub_type: 杂志文章,随机对照试验
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更新日期:2007-08-01 00:00:00
abstract:BACKGROUND:Previous national survey research has shown significant deficits in routine postoperative pain management in the UK. This study used an organizational change perspective to explore in detail the organizational challenges faced by three acute pain services in improving postoperative pain management. METHODS:...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,多中心研究
doi:10.1093/bja/aep066
更新日期:2009-06-01 00:00:00
abstract::Cis AB blood group is a rare variant of the AB blood group resulting from inheritance of both A and B genes on one chromosome. It may lead to misclassification in ABO grouping and clinical misdiagnosis as a result of its divergence from the laws of Landsteiner and Mendel. We encountered a case of cis AB blood group, a...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/83.3.491
更新日期:1999-09-01 00:00:00
abstract::Summary While complex physiological mechanisms exist to regulate and optimize tissue oxygenation under various conditions, clinical and experimental evidence indicates that anaemia, unchecked, is associated with organ injury and unfavourable outcomes. More data (especially from human studies) are needed to answer ques...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aer350
更新日期:2011-12-01 00:00:00
abstract::A variant of a rebreathing/indicator-dilution technique was used to measure lung volume. Two or three indicators, which should have essentially the same pulmonary volume of distribution, were used. Gas compositions were measured by respiratory mass spectrometry and an extrapolation was used to allow for oxygen consump...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/56.3.289
更新日期:1984-03-01 00:00:00
abstract:BACKGROUND:High-frequency oscillation (HFO) is a widely used lung-protective ventilatory strategy in paediatric and neonatal acute lung injury. Its safe and effective use has been hindered by inadequate recruitment of the lung during oscillation and, until recently, the lack of an adequately powered oscillator for use ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/88.5.708
更新日期:2002-05-01 00:00:00
abstract::Gastric pH and volume were measured in 87 patients who had received i.v. omeprazole (a new gastric antisecretory agent) 40 mg or placebo 1 or 3 h before surgery. Omeprazole increased the pH of gastric contents in the majority of patients. Administration 1 h before surgery produced greater gastric pH and smaller volume...
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/63.5.536
更新日期:1989-11-01 00:00:00
abstract:BACKGROUND:The minimum alveolar concentration (MAC) is a traditional index of the hypnotic potency of an inhalational anaesthetic. To investigate the anaesthetic as well as the unwanted effects of xenon (Xe) in a swine model, it is useful to know MAC(Xe). METHODS:The study was performed using ten swine (weight 27.8-35...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/aeh077
更新日期:2004-03-01 00:00:00
abstract::We have investigated, in six healthy male volunteers, the effect of high thoracic extradural anaesthesia on the ventilatory pattern and hypercapnic ventilatory response. Ventilatory variables were determined using a respiratory inductive plethysmograph. Duration of inspiration, rib cage excursion and its contribution ...
journal_title:British journal of anaesthesia
pub_type: 杂志文章
doi:10.1093/bja/62.4.362
更新日期:1989-04-01 00:00:00
abstract::Blood transfusion saves many lives but carries significant risk of injury. Currently, red blood cell (RBC) concentrates can be stored up to 42 days. Concerns have recently been raised about the safety and efficacy of transfusing stored RBCs. Refrigerated storage results in a 'storage lesion' that is reflected by metab...
journal_title:British journal of anaesthesia
pub_type: 杂志文章,评审
doi:10.1093/bja/aet405
更新日期:2013-12-01 00:00:00