Abstract:
OBJECTIVE:To evaluate the Datex Deltatrac II for measurements in neonates requiring mechanical ventilation. DESIGN:Prospective laboratory evaluation, using a ventilated lung model and gas injection. During simulation of 79 neonatal respiratory settings, assessment of oxygen consumption (VO2), carbon dioxide production (VCO2) and respiratory quotient (RQ) was compared to a reference method (mass spectrometry, wet gas spirometry) using the statistical method of Bland and Altman. INTERVENTIONS:Respiratory variables, which may influence the accuracy and precision of gas exchange measurements, were varied within the following ranges: inspired oxygen fraction (FIO2): 0.21-0.8, expired carbon dioxide fraction (FECO2) and inspiratory-expiratory oxygen fraction (DFO2): 0.0032-0.0256, expiratory flow rate: 1.0-2.5 l/min, inspiratory pressure: 10-55 mbar, respiratory rate 25-60/min, constant RQ of 1. This resulted in 79 tests with VCO2 and VO2 ranging from 8-64 ml/min. MEASUREMENTS AND RESULTS:The coefficient of repeatability for ten single subsequent Deltatrac measurements was 8.09 ml/min for VO2 and 9.17 ml/min for VCO2 compared to 2.02 ml/min and 0.90 ml/min for VO2 and VCO2 with repeated reference measurements. The coefficient of repeatability of the Deltatrac measurements improved considerably when means of subsequent 5 min intervals were compared: 0.68 ml/min for VO2 and 0.28 ml/ min for VCO2. The difference between the two methods (Deltatrac-reference) was -3.8 % (2 s: 11.4%) for VO2, 13.2% (2s: 7.9%) for VCO2 and 17.6% (2s: 16.7%) for RQ. The agreement between methods deteriorated with smaller (FECO2) or DFO2 and increasing FIO2. CONCLUSIONS:Considering limits of agreement of less than +/- 20% as clinically acceptable, results for VO2 assessment indicate acceptable accuracy and precision whereas VCO2 and RQ assessments exceed this limit. Limited accuracy and precision result from detection of CO2 following dilution of expiratory gases and increased sensitivity to error propagation by Haldane equations due to the small differences between inspiratory and expiratory gas fractions.
journal_name
Intensive Care Medjournal_title
Intensive care medicineauthors
Behrends M,Kernbach M,Bräuer A,Braun U,Peters J,Weyland Wdoi
10.1007/s001340000708keywords:
subject
Has Abstractpub_date
2001-01-01 00:00:00pages
228-35issue
1eissn
0342-4642issn
1432-1238journal_volume
27pub_type
杂志文章abstract:OBJECTIVE:To describe the incidence, risk factors, and impact on mortality of acute kidney injury (AKI) in patients with 2009 influenza A (H1N1) viral pneumonia requiring mechanical ventilation. DESIGN:Observational cohort study. PATIENTS AND METHODS:AKI was defined as risk, injury or failure, according to the RIFLE ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-011-2167-7
更新日期:2011-05-01 00:00:00
abstract:OBJECTIVE:Evaluating the prevalence, risk factors and prevention of pressure ulcers in Dutch intensive care units (ICUs). DESIGN:Cross-sectional design. SETTING:ICUs of acute care hospitals that participated in the 1998 and 1999 national prevalence surveys. Data were collected on 1 day in each year. PATIENTS:Eight h...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340101061
更新日期:2001-10-01 00:00:00
abstract:OBJECTIVE:To evaluate various treatment strategies in critically ill patients with ischaemic acute renal failure, there is a need for reliable bedside measurements of total renal blood flow (RBF), glomerular filtration rate (GFR) and renal oxygen consumption without the need for urine collection. DESIGN:The continuous...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s00134-004-2380-8
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:To compare some of the confirmatory investigations of brain death with clinical criteria in order to achieve the most sensitive and accurate diagnosis of brain death. DESIGN:All patients with isolated brain lesions and Glasgow Coma Scale (GCS) = 3 were subjected to neurological examination after ruling out h...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01711544
更新日期:1995-08-01 00:00:00
abstract:OBJECTIVES:To establish a preliminary list of critical incidents (CIs) associated with mechanical ventilation and to describe a CI reporting method. DESIGN:A list of CIs was established based on a consensus among ICU caregivers. The list was compared to CIs collected prospectively during a predefined study period. SE...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s00134-002-1251-4
更新日期:2002-04-01 00:00:00
abstract::The original version of this article unfortunately contained a mistake. ...
journal_title:Intensive care medicine
pub_type: 杂志文章,已发布勘误
doi:10.1007/s00134-020-06009-2
更新日期:2020-05-01 00:00:00
abstract:OBJECTIVE:To describe a real-time ultrasound sign, the visualization of the cavity and the walls of the maxillary sinus ("sinusogram"), and to assess its correlation with total opacity of the sinus. DESIGN:Prospective clinical study. SETTING:The medical ICU of a university-affiliated hospital. PATIENTS:The significa...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050716
更新日期:1998-10-01 00:00:00
abstract:OBJECTIVE:Invasive candidiasis (IC) outcomes in intensive care units (ICUs) could be improved by the early administration of antifungals. The Candida Score (CS) prediction rule has been proposed for the selection of patients who could develop IC. Procalcitonin (PCT) levels allow prompt identification of sepsis, but the...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-009-1623-0
更新日期:2009-12-01 00:00:00
abstract::Factors influencing nitrogen balance during total parenteral nutrition have been investigated in 34 critically ill injured patients studied during the first 6 days after trauma. Basal nitrogen balance was severely negative (-0.26 +/- 0.12 (SD) g X kg-1), but improved consistently during treatment. Nitrogen intake prov...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00256262
更新日期:1984-01-01 00:00:00
abstract:PURPOSE:The aim of this study is to examine family members' experiences of end-of-life decision-making processes in Norwegian intensive care units (ICUs) to ascertain the degree to which they felt included in the decision-making process and whether they received necessary information. Were they asked about the patient'...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-011-2253-x
更新日期:2011-07-01 00:00:00
abstract:OBJECTIVE:To evaluate the influence of changes in alveolar ventilation on the following tonometry-derived variables: gastric intramucosal CO2 tension (PtCO2), gastric arterial CO2 tension difference (PgapCO2), gastric intramucosal pH (pHi) and arterial pH-pHi difference (pHgap). DESIGN:Clinical prospective study. SET...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s001340050834
更新日期:1999-03-01 00:00:00
abstract::The treatment of severe tetanus with autonomic dysfunction is discussed, with emphasis on the use of magnesium sulphate. An exemplary case is reported, describing the inadequate response to magnesium, but the previously unreported and successful use of clonidine to control sympathetic overactivity. The properties of c...
journal_title:Intensive care medicine
pub_type: 杂志文章,评审
doi:10.1007/BF02575297
更新日期:1990-01-01 00:00:00
abstract:OBJECTIVE:To study the pharmacokinetics and local tissue effects resulting from the intratracheal administration of preservative-free fentanyl. DESIGN:Prospective, randomized, blinded and controlled animal study. SETTING:University research laboratory. SUBJECTS:Eighteen adult male New Zealand rabbits. INTERVENTIONS...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01720719
更新日期:1996-02-01 00:00:00
abstract:PURPOSE:Little evidence of increased thrombotic risk is available in COVID-19 patients. Our purpose was to assess thrombotic risk in severe forms of SARS-CoV-2 infection. METHODS:All patients referred to 4 intensive care units (ICUs) from two centers of a French tertiary hospital for acute respiratory distress syndrom...
journal_title:Intensive care medicine
pub_type: 杂志文章,多中心研究
doi:10.1007/s00134-020-06062-x
更新日期:2020-06-01 00:00:00
abstract:OBJECTIVES:Circulating levels of the proinflammatory mediator High Mobility Group Box Protein 1 (HMGB1) are increased in septic patients and may contribute to sepsis-induced organ dysfunction. Although HMGB1 has been shown to activate neutrophils from healthy volunteers, the responses of neutrophils from septic patient...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-007-0748-2
更新日期:2007-10-01 00:00:00
abstract:INTRODUCTION:The emphasis on the importance of professionalism in a recent CoBaTrICE-IT paper was impressive. However, insight into the elements of professionalism as perceived relevant for intensivists from the fellows' view, and how these are taught and learned, is limited. OBJECTIVES AND METHODS:A nationwide study ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-009-1644-8
更新日期:2010-02-01 00:00:00
abstract:PURPOSE:Hypoxia-ischemia (HI), as a major cause of fetal brain damage, has long-lasting neurological implications. Therefore, therapeutic interventions that attenuate the neuropathological outcome of HI while also improving the neurofunctional outcome are of paramount clinical importance. The aim of this study was to i...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-010-1913-6
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVE:To explore the consequences of helium/oxygen (He/O(2)) inhalation on respiratory mechanics, gas exchange, and ventilation-perfusion (VA/Q) relationships in an animal model of severe induced bronchospasm during mechanical ventilation. DESIGN:Prospective, interventional study. SETTING:Experimental animal labo...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-003-1779-y
更新日期:2003-09-01 00:00:00
abstract:OBJECTIVE:To report the first case of ARDS in children treated with nitric oxide (NO) inhalation. METHODS:A 13-months infant presented with BPD and severe hypoxemia related to RSV infection and ARDS. Inhaled NO was delivered in the ventilatory circuit of a continuous flow ventilator (Babylog 8000, Dräger) in a concent...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01711907
更新日期:1994-08-01 00:00:00
abstract:OBJECTIVES:To determine the effects of an intravenous bolus dose of a vasopressin analogue, terlipressin (1 mg), on systemic haemodynamic parameters and gastric mucosal perfusion (GMP) in patients with catecholamine-treated septic shock using a gastric tonometry and laser-Doppler flowmetry technique. DESIGN:Prospectiv...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s00134-003-2094-3
更新日期:2004-04-01 00:00:00
abstract::We analysed the case histories of 22 patients with life threatening asthma retrospectively. Fifteen patients needed mechanical ventilation. Three patients, all of them in cardiac arrest before or at the moment of admission, died. In five patients, halothane therapy was successfully used as a last resort. No major comp...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00260352
更新日期:1985-01-01 00:00:00
abstract:OBJECTIVE:To compare outcome prediction using the Multiple Organ Dysfunction Score (MODS) and the Sequential Organ Failure Assessment (SOFA), two of the systems most commonly used to evaluate organ dysfunction in the intensive care unit (ICU). DESIGN:Prospective, observational study. SETTING:Thirty-one-bed, universit...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-002-1491-3
更新日期:2002-11-01 00:00:00
abstract::Recombinant activated factor VII (rFVIIa, 'NovoSeven') is indicated for the treatment of spontaneous and surgical bleeding in patients with haemophilia A or B with antibodies to factors VIII or IX (FVIII or FIX) worldwide, and in patients with acquired haemophilia in Europe. In vitro cell models have demonstrated that...
journal_title:Intensive care medicine
pub_type: 杂志文章,评审
doi:10.1007/s00134-002-1469-1
更新日期:2002-10-01 00:00:00
abstract:PURPOSE:To provide evidence-based guidelines for early enteral nutrition (EEN) during critical illness. METHODS:We aimed to compare EEN vs. early parenteral nutrition (PN) and vs. delayed EN. We defined "early" EN as EN started within 48 h independent of type or amount. We listed, a priori, conditions in which EN is o...
journal_title:Intensive care medicine
pub_type: 杂志文章,meta分析,实务指引,评审
doi:10.1007/s00134-016-4665-0
更新日期:2017-03-01 00:00:00
abstract:OBJECTIVE:To assess the impact of hemodynamic variables on the outcome of critically ill patients in septic shock and to identify the optimal threshold values related to outcome with special reference to continuously monitored mean arterial pressure (MAP) and mixed venous oxygen saturation (SvO2). DESIGN AND SETTING:R...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-005-2688-z
更新日期:2005-08-01 00:00:00
abstract::We compare two patients admitted after near drowning. Both presented a severe metabolic acidosis, but only one of them developed an acute pulmonary edema with hypoxemia. An increase of lipid peroxides associated with a reduction of vitamin E concentration has been observed in this later patient. Lipid peroxidation, on...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00254776
更新日期:1985-01-01 00:00:00
abstract::One hundred consecutive patients were interviewed between the 3rd and 7th days, inclusive, of their discharge from an intensive care unit to a general ward. The patients' recall of events related to their admission to the ICU was generally poor, and 41% of them felt that they had been confused at some time during thei...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01686054
更新日期:1979-05-01 00:00:00
abstract::The acute respiratory distress syndrome (ARDS) continues as a contributor to the morbidity and mortality of patients in intensive care units throughout the world, imparting tremendous human and financial costs. During the last ten years there has been a decline in ARDS mortality without a clear explanation. The Americ...
journal_title:Intensive care medicine
pub_type: 共识发展会议,杂志文章,评审
doi:10.1007/s001340050585
更新日期:1998-04-01 00:00:00
abstract:OBJECTIVE:To determine whether health-related quality of life (HRQL) in survivors of acute renal failure (ARF) occurring in intensive care is predictable from data available at the time of acute illness. DESIGN AND SETTING:Prospective pilot study in academic intensive care units. PATIENTS AND METHODS:Patients requiri...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-003-1837-5
更新日期:2003-09-01 00:00:00
abstract:OBJECTIVE:To assess noise exposure during noninvasive ventilation (NIV) with different types of interface (helmet, nasal, and facial masks). SUBJECTS AND METHODS:Ten "naive" healthy volunteers underwent NIV at pressure support levels of 10 and 15 cmH2O with: (a) helmet, (b) helmet equipped with HME filters at the junc...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s00134-004-2347-9
更新日期:2004-09-01 00:00:00