Abstract:
:We studied the influence of ventilatory frequency (1-5 Hz), tidal volume, lung volume and body position on the end-expiratory alveolar-to-tracheal pressure difference during high-frequency jet ventilation (HFJV) in Yorkshire piglets. The animals were anesthetized and paralysed. Alveolar pressure was estimated with the clamp off method, which was performed by a computer controlled ventilator and which had been extensively tested on its feasibility. The alveolar-to-tracheal pressure difference increased with increasing frequency and with increasing tidal volume, the common determinant appearing to be the mean expiratory flow. The effects in prone and in supine position were similar. Increasing thoracic volume decreased the alveolar-to-tracheal pressure difference indicating a dependence of this pressure difference on airway resistance. We concluded that the main factors determining the alveolar-to-tracheal pressure difference (delta P) during HFJV are expiratory flow (V'E) and airway resistance (R), delta P congruent to V'E x R.
journal_name
Intensive Care Medjournal_title
Intensive care medicineauthors
van Vught AJ,Versprille A,Jansen JRdoi
10.1007/BF01706322subject
Has Abstractpub_date
1990-01-01 00:00:00pages
33-40issue
1eissn
0342-4642issn
1432-1238journal_volume
16pub_type
杂志文章abstract:OBJECTIVE:An investigation into the incidence of post-operative complications after thoracic surgery with 3 different physiotherapy masks. DESIGN:A prospective, consecutive, randomized comparison. SETTING:Department of Thoracic and Heart Surgery at a University Hospital. The treatments were performed by experienced a...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF01690551
更新日期:1993-01-01 00:00:00
abstract:PURPOSE:The early diagnosis of traumatic internal carotid artery dissection (TICAD) is essential for initiating appropriate treatment and improving outcome. We searched for criteria from transcranial Doppler (TCD) measurements on admission that could be associated with subsequent TICAD diagnosis in patients with trauma...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-010-1919-0
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVE:To determine the reliability of estimating arterial CO(2) pressure (PaCO(2)) using a recently introduced transcutaneous CO(2) pressure (PtcCO(2)) monitor in severe obese patients. DESIGN:Observational and interventional study. SETTING:District hospital with respiratory ward and bariatric surgery unit. PATI...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-008-1078-8
更新日期:2008-07-01 00:00:00
abstract::As part of a nationwide evaluation of intensive care, we examined patient- and hospital-related factors which could influence the patterns of utilization of arterial cannulae and central venous and pulmonary artery catheters. We also studied the possible impact of these interventions on the short-term outcome among 14...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01713935
更新日期:1991-01-01 00:00:00
abstract::Recent advances in analytical electrochemistry have provided highly selective potassium ion exchangers and robust polymeric membranes that can be used to measure the potassium activity in plasma or whole blood. The relationship between the activity measurement and the more familiar concentration measurement is explore...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01684390
更新日期:1978-04-01 00:00:00
abstract::We evaluated the effect of a cimetidine continuous infusion (2 g in 24 h) on the intragastric pH of 16 critically ill patients (11 men, 5 women, mean age 45 years). During the 24 h pre-trial period and the subsequent 24 h cimetidine infusion, an intragastric combined electrode was placed in the fundus and the pH recor...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00262892
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVE:Aspiration of dead space (ASPIDS) improves carbon dioxide (CO2) elimination by replacing dead space air rich in CO2 with fresh gas during expiration. The hypothesis was that ASPIDS allows normocapnia to be maintained at low tidal volumes (VT). DESIGN:Prospective study. SETTING:Adult intensive care unit in a...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050929
更新日期:1999-07-01 00:00:00
abstract:BACKGROUND:Invasive candidiasis and candidemia are frequently encountered in the nosocomial setting particularly in the intensive care unit (ICU). OBJECTIVE AND METHODS:To review the current management of invasive candidiasis and candidemia in non-neutropenic adult ICU patients based on a review of the literature and ...
journal_title:Intensive care medicine
pub_type: 杂志文章,评审
doi:10.1007/s00134-008-1339-6
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVE:To investigate the relationship between cytokines and the inflammatory responses in patients with out-of-hospital cardiac arrest, we examined the changes of cytokines as well as alterations in the markers of neutrophil activation, platelet and endothelial activation, and endothelial injury. DESIGN:Prospectiv...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s001340050907
更新日期:1999-06-01 00:00:00
abstract:PURPOSE:To describe changes in hemodynamic variables, sedation, and pain score after discontinuation of prolonged infusions of dexmedetomidine in a pediatric population of critically ill cardiac patients. METHODS:Retrospective case series of patients who received continuous infusions of dexmedetomidine for longer than...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-011-2441-8
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVES:To assess the reproducibility of respiratory dead space measurements in ventilated children. DESIGN:Prospective study. SETTING:University pediatric intensive care unit. PATIENTS:Thirty-two mechanically ventilated children (0.13-15.4 years) who were clinically stable. METHODS:The single-breath CO(2) test ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-004-2288-3
更新日期:2004-07-01 00:00:00
abstract:OBJECTIVE:To evaluate the origin of H+ ions participating in the generation of CO2 coming from sodium bicarbonate infusion during metabolic acidosis. We hypothesized that these H+ ions come from a back-titration of the main non-bicarbonate buffers present in the blood, i. e. the hemoglobin and the albumin, and thus pos...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340051204
更新日期:2000-05-01 00:00:00
abstract:PURPOSE:To estimate the direct and indirect (contextual) effects of the factorized constituents of selective digestive decontamination and selective oropharyngeal decontamination (SDD/SOD), being topical antibiotic (TA) and protocolized antifungal prophylaxis (PAFP), on ICU-acquired candidemia. METHODS:A broad range o...
journal_title:Intensive care medicine
pub_type: 杂志文章,meta分析
doi:10.1007/s00134-015-4004-x
更新日期:2015-11-01 00:00:00
abstract:PURPOSE:To determine the incidence of and risk factors for adverse cardiac events during catecholamine vasopressor therapy in surgical intensive care unit patients with cardiovascular failure. METHODS:The occurrence of any of seven predefined adverse cardiac events (prolonged elevated heart rate, tachyarrhythmia, myoc...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-012-2531-2
更新日期:2012-06-01 00:00:00
abstract:OBJECTIVE:To compare the effects of patient-initiated, pressure-regulated, volume-controlled ventilation (PRVC) with pressure-preset intermittent mandatory ventilation (IMV) in neonates with respiratory failure. DESIGN:Randomised, prospective study. SETTING:Intensive care unit (14 beds) in a 300-bed paediatric teachi...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s001340050441
更新日期:1997-09-01 00:00:00
abstract:OBJECTIVE:To study the wishes of a sample of French patients about medical information and surrogacy, at a time when the French Ministry of Health is supporting increased patient autonomy. DESIGN:A cohort of competent patients with non-critical illnesses or injuries completed an intention-to-act questionnaire on the a...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050011
更新日期:2000-01-01 00:00:00
abstract:OBJECTIVE:Antithrombin exerts direct effects on neutrophils by inhibiting chemokine-induced migration. This study examined the potency of different pharmaceutical antithrombin preparations in inhibiting neutrophil chemotaxis toward interleukin 8. METHODS:Cell migration was tested by the leading front assay in modified...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-002-1432-1
更新日期:2002-10-01 00:00:00
abstract::In 16 patients with multiple injuries the effect of parenteral administration of a fat emulsion on the pulmonary vascular system has been studied. Using the Hewlett Packard 5600 A Intensive Care System, which allows vital parameters to be sampled at a rate of two values per min, pulmonary artery pressure (PAP) was mon...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01699260
更新日期:1983-01-01 00:00:00
abstract:OBJECTIVE:To assess the value of the diagnosis of overt disseminated intravascular coagulation (DIC) according to the International Society on Thrombosis and Haemostasis (ISTH) criteria and that of the parameters included in the ISTH score for overt DIC in predicting day 28 mortality in intensive care patients. Also, t...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-005-2685-2
更新日期:2005-09-01 00:00:00
abstract:INTRODUCTION:The purpose of a scientific paper is to communicate results and within the paper this applies especially to the presentation of data. It is the universal practice in medical journals to present statistical results using tables. Good tables are an integral part of the manuscript. To help researchers communi...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-014-3248-1
更新日期:2014-05-01 00:00:00
abstract:OBJECTIVE:To describe the syndrome of rhabdomyolysis during bacterial sepsis with regard to incidence, blood bacteriology and complications and to examine the association between hyperosmolal state and rhabdomyolysis, evaluating the relationship between plasma osmolality (Posm) and serum creatine phosphokinase (CPK) le...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050882
更新日期:1999-05-01 00:00:00
abstract:OBJECTIVE:To investigate the effects of some acid-base abnormalities on blood capacity of transporting CO(2). DESIGN:Prospective study. SETTING:General and Cardiosurgical ICUs of a University hospital. PATIENTS:Six groups of ten patients characterized by: metabolic alkalosis; respiratory alkalosis; absence of acid-b...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-002-1259-9
更新日期:2002-05-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis that, during high-frequency oscillatory ventilation (HFOV) of pigs with acute lung injury, the oxygenation index (OI = Paw*FIO(2)*100/PaO(2)) is minimal at the lowest continuous distending pressure (Paw), where the physiological shunt fraction is below 0.1 (Paw(optimal)). DESIGN AND SE...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-002-1368-5
更新日期:2002-08-01 00:00:00
abstract:OBJECTIVE:To explore translation, conversion and definition ambiguities, when using severity scoring systems in patients admitted to intensive care units (ICUs). DESIGN:A prospective study of the prognosis of acute renal failure in ICUs. SETTING:The study was conducted in 20 French ICUs. PATIENTS:360 patients presen...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01705416
更新日期:1995-04-01 00:00:00
abstract:PURPOSE:To test the hypothesis that RNA editing is altered in pediatric patients with cyanotic congenital heart disease (CHD) and to determine whether A-to-I RNA editing is associated with the postoperative course following cardiac surgery. Cyanotic CHD is associated with a unique pathophysiology caused by chronic hypo...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-011-2296-z
更新日期:2011-10-01 00:00:00
abstract:OBJECTIVE:The association of acute-phase reaction and outcome of patients with acute vascular diseases is controversial. The prognostic value of admission C-reactive protein (CRP) in patients with acute aortic aneurysm or dissection has not yet been investigated. DESIGN AND SETTING:Cohort study including 255 consecuti...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-002-1299-1
更新日期:2002-06-01 00:00:00
abstract::A retrospective study of the medical records of 115 consecutive cases of meningococcal disease with 11 fatalities was carried out in order to evaluate the power of 15 clinical and laboratory variables available on admission in predicting a fatal outcome. On linear discriminant analysis, six variables showed a signific...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00261740
更新日期:1986-01-01 00:00:00
abstract:OBJECTIVE:a) to describe a non-barotraumatic ventilatory setting for independent lung ventilation (ILV); b) to determine the utility of single lung end-tidal CO(2) (EtCO(2)) monitoring to evaluate the ventilation to perfusion (V/Q) matching in each lung during ILV and for ILV weaning. DESIGN:prospective study. SETTIN...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s00134-001-1149-6
更新日期:2001-12-01 00:00:00
abstract:OBJECTIVE:To describe the use of volumetric capnography, a plot of expired CO(2) concentration against expired volume, in monitoring fibrinolytic treatment of major pulmonary embolism. DESIGN AND SETTING:Two case reports in the emergency department of a teaching hospital. PATIENTS:Two conscious and spontaneously brea...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-004-2444-9
更新日期:2004-11-01 00:00:00
abstract:PURPOSE:To compare the concentration conformity of infusion solutions manually prepared on intensive care units (ICU) with solutions from pharmacy-based, automated production. METHODS:A prospective observational study conducted in a university hospital in Germany. Drug concentrations of 100 standardised infusion solut...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-011-2230-4
更新日期:2011-08-01 00:00:00