Abstract:
OBJECTIVE:Evaluation of low-level PEEP (5 cm H2O) and the two different CPAP trigger modes in the Bennett 7200a ventilator (demand-valve and flow-by trigger modes) on inspiratory work of breathing (Wi) during the weaning phase. DESIGN:Prospective controlled study. SETTING:The intensive care unit of a university hospital. PATIENTS:Six intubated patients with normal lung function (NL), ventilated because of non-pulmonary trauma or post-operative stay in the ICU, and six patients recovering from acute respiratory failure due to exacerbation of chronic obstructive pulmonary disease (COPD), breathing either FB-CPAP or DV-CPAP with the Bennett 7200a ventilator. INTERVENTIONS:The patients studied were breathing with zero end-expiratory pressure (ZEEP), as well as CPAP of 5 cm H2O (PEEP), with the following respiratory modes: the demand-valve trigger mode, pressure support of 5 cm H2O, and the flow-by trigger mode (base flow of 20 l/min and flow trigger of 2 l/min). Furthermore, Wi during T-piece breathing was evaluated. MEASUREMENTS AND RESULTS:Wi was determined using a modified Campbell's diagram. Total inspiratory work (Wi), work against flow-resistive resistance (W(ires)), work against elastic resistance (Wiel), work imposed by the ventilator system (W(imp)), dynamic intrinsic positive end-expiratory pressure (PEEPidyn), airway pressure decrease during beginning inspiration (P(aw)) and spirometric parameters were measured. In the NL group, only minor, clinically irrelevant changes in the measured variables were detected. In the COPD group, in contrast, PEEP reduced Wi and its components W(ires) and Wiel significantly compared to the corresponding ZEEP settings. This was due mainly to a significant decrease in PEEPidyn when external PEEP was applied. Flow-by imposed less Wi on the COPD patients during PEEP than did demand-valve CPAP. Differences in W(imp) between the flow-by and demand-valve trigger models were significant for both groups. However, in relation to Wi these differences were small. CONCLUSION:We conclude that the application of low-level external PEEP benefits COPD patients because it reduces inspiratory work, mainly by lowering the inspiratory threshold represented by PEEPidyn. Differences between the trigger modes of the ventilator used in this study were small and can be compensated for by the application of a small amount of pressure support.
journal_name
Intensive Care Medjournal_title
Intensive care medicineauthors
Sydow M,Golisch W,Buscher H,Zinserling J,Crozier TA,Burchardi Hdoi
10.1007/BF01712329subject
Has Abstractpub_date
1995-11-01 00:00:00pages
887-95issue
11eissn
0342-4642issn
1432-1238journal_volume
21pub_type
临床试验,杂志文章abstract::Nine patients hospitalized for tetanus were studied under the same protocol which included two haemodynamic studies with a preload trial (PLT). The first being made during therapy (diazepam barbiturate association), on the sixth day of hospitalisation, and the second one after recovery. The comparison of the results s...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01700252
更新日期:1978-07-01 00:00:00
abstract:OBJECTIVE:To analyze the actual cost of pediatric intensive care and its different components, particularly the differences between various patient groups, with special reference to the variable cost and the elements included in it. DESIGN:Prospective, observational study. SETTING:Multidisciplinary 12-bed pediatric i...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050320
更新日期:1997-02-01 00:00:00
abstract::This report identifies some of the risk factors underlying the acquisition of hospital infections in patients admitted to Intensive Care Units (ICUs). Infection rates vary in different institutes and in different types of ICUs. Patients are particularly prone to septicaemia and respiratory infections and the underlyin...
journal_title:Intensive care medicine
pub_type: 杂志文章,评审
doi:10.1007/BF01709700
更新日期:1990-01-01 00:00:00
abstract:OBJECTIVE:To study plasma concentrations of interleukin 6 (IL-6) and interleukin 8 (IL-8) in patients with splanchnic hypoxia, as documented by gastric intramucosal measurements (pH-i), during major abdominal surgery and the relationship between IL-6 and IL-8 concentrations and postoperative complications as well as cl...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050575
更新日期:1998-04-01 00:00:00
abstract:OBJECTIVE:Pulmonary endothelial activation caused by high pulmonary capillary pressures may be involved in the pathogenesis of cardiogenic pulmonary edema (CPE). We studied soluble selectins and soluble ICAM-1 as markers of cell activation in the systemic and pulmonary circulation of patients with respiratory failure (...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340000843
更新日期:2001-03-01 00:00:00
abstract::The arterial oxygen and carbon dioxide tensions, pulmonary and systemic haemodynamics and pulmonary shunting and mechanics were measured during the first 30 min after intravenous labetalol administration. Thirty patients, recovering in the intensive care unit after neurosurgical interventions were randomly divided in ...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF00255635
更新日期:1988-01-01 00:00:00
abstract::Male gender predisposes to severe sepsis and septic shock. This effect has been ascribed to higher levels of testosterone. The ESPNIC ARDS database was searched, to determine if there was evidence of a similar male preponderance in severe sepsis in prepubertal patients in spite of low levels of male sex hormones at th...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-003-1948-z
更新日期:2003-10-01 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:Extracorporeal membrane oxygenation (ECMO) can support oxygenation and carbon dioxide elimination in severe lung failure. Usually it is accompanied by controlled mechanical ventilation. Neurally adjusted ventilatory assist (NAVA) is a new mode of ventilation triggered by the diaphragmatic electrical activity an...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-010-1982-6
更新日期:2010-12-01 00:00:00
abstract:OBJECTIVE:The long-term mortality outcome associated with sepsis and septic shock has not been well defined in a nonselected critically ill population. This study investigated the occurrence and the role of bloodstream infection (BSI) associated sepsis and septic shock at time of intensive care unit (ICU) admission on ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-004-2544-6
更新日期:2005-02-01 00:00:00
abstract:PURPOSE:Acute heart failure (AHF) causes high burden of mortality, morbidity, and repeated hospitalizations worldwide. This guidance paper describes the tailored treatment approaches of different clinical scenarios of AHF and CS, focusing on the needs of professionals working in intensive care settings. RESULTS:Tissue...
journal_title:Intensive care medicine
pub_type: 杂志文章,评审
doi:10.1007/s00134-015-4041-5
更新日期:2016-02-01 00:00:00
abstract::A rapid method for the bedside measurement of plasma, intracellular and whole blood lactates is described. The paper described a new method of measuring the L-lactate content of blood using an apparatus ("Lactate Analyzer 640", manufactured by Roche Bio-electronics, Basel) previously designed for this purpose but usin...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01692921
更新日期:1980-11-01 00:00:00
abstract::Peritonitis has been produced in rabbits by the spreading of 5 ml of caecal contents throughout the peritoneal cavity. After sacrifice at 5 h, electron microscopy revealed a increase of 600% in PMN and 1200% in lymphocytes in the pulmonary capillaries of the test animals when compared to the sham operated group. The p...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00265119
更新日期:1987-01-01 00:00:00
abstract::Arrhythmias are extremely common early after AMI. An arrhythmia is defined by exclusion, either because the sequence of myocardial depolarisation is other than normal or because certain arbitrary limits are exceeded. It follows that the term "arrhythmia" encompasses a complex heterogenous group. Although arrhythmias a...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01683131
更新日期:1978-01-01 00:00:00
abstract::Two hundred and seventy-three acute hemorrhagic shocks were treated in 1984 in a pre-hospital emergency care unit. Twenty patients (7%) had a paradoxical bradycardia: they were conscious, 9 of them had an undetectable systolic arterial pressure with the sphygmomanometric method but the femoral pulse was still present....
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00254705
更新日期:1987-01-01 00:00:00
abstract:OBJECTIVES:(1) To demonstrate that metabolic parameters are better indicators of tissue hypoxia than regional and whole oxygen consumption (VO(2)). (2) To compare intramucosal pH (pHi) in different gastrointestinal segments. DESIGN:Prospective, interventional study. SETTING:Research laboratory at a university center....
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-001-1138-9
更新日期:2001-12-01 00:00:00
abstract::Central venous catheters (CVCs) are widely used in critically ill patients in intensive care units. However, infectious complications are common and may limit their utility. We critically review the literature to determine the impact of CVC design and composition, insertion site selection, insertion procedures, care a...
journal_title:Intensive care medicine
pub_type: 杂志文章,评审
doi:10.1007/BF01726542
更新日期:1995-02-01 00:00:00
abstract:OBJECTIVE:To evaluate the usefulness of early transcranial Doppler ultrasound (TCD) goal-directed therapy after severe traumatic brain injury initiated before invasive cerebral monitoring is available. DESIGN:Prospective, observational clinical study. SETTING:Surgical intensive care unit, university hospital. PATIEN...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-007-0558-6
更新日期:2007-04-01 00:00:00
abstract:OBJECTIVE:To study the influence of continuous administration of heparin on platelet function in intensive care patients. DESIGN:Prospective, serial investigation. SETTING:Clinical investigation on a surgical and neurosurgical intensive care unit in a university hospital. PATIENTS:The study included 45 patients: 15 ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050374
更新日期:1997-05-01 00:00:00
abstract:: ...
journal_title:Intensive care medicine
pub_type: 评论,社论
doi:10.1007/s00134-018-5399-y
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVE:To identify objective trends of the course of illness that might be used as benchmarks in the auditing of the organization/performance of Intensive Care Units (ICU). DESIGN:Retrospective analysis. PATIENTS AND SETTING:A group of 12,615 patients and 55,464 patient-days prospectively collected in 89 ICUs of 1...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-002-1331-5
更新日期:2002-07-01 00:00:00
abstract:OBJECTIVE:A closed suction system (CS) maintains connection with the mechanical ventilator during tracheal suctioning and is claimed to limit loss in lung volume and oxygenation. We compared changes in lung volume, oxygenation, airway pressure and hemodynamics during endotracheal suctioning performed with CS and with 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/s001340100897
更新日期:2001-04-01 00:00:00
abstract:OBJECTIVE:Pressure-volume (PV) curves are recorded after induction of complete muscle paralysis, which may limit their clinical use. The feasibility of recording PV curves without paralysis has not been tested. In 19 patients with acute respiratory distress syndrome (ARDS) and no hemodynamic instability we prospectivel...
journal_title:Intensive care medicine
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00134-006-0265-8
更新日期:2006-09-01 00:00:00
abstract::Nosocomial infections are a major problem in intensive care patients. Thirty-nine patients, requiring intensive care for 5 days or more (mean 15.8 days) were prospectively investigated, to determine the relation between colonisation and nosocomial infection. Thrice weekly, cultures from the oropharynx, respiratory and...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00255792
更新日期:1987-01-01 00:00:00
abstract::Plasma colloid osmotic pressure (COP) has been calculated from both serum albumin concentration and plasma total protein concentration. These values have been compared to those measured directly using a membrane-transducer oncometer in a group of normal subjects, in a group of critically-ill patients with a variety of...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00254796
更新日期:1987-01-01 00:00:00
abstract::Although colitis is often seen in critically all patients who have received multiple broad-spectrum antibiotics, there are no reports describing severe sepsis as a result of Clostridium difficile infection. We describe three cases of severe sepsis with local intestinal Clostridium difficile infection as the only ident...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF02044130
更新日期:1996-09-01 00:00:00
abstract:OBJECTIVES:To assess the markers of perfusion which best discriminate survivors from non-survivors of childhood sepsis and to compare the information derived from gastric tonometry with conventionally measured haemodynamic and laboratory parameters. DESIGN:Prospective clinical study of children with sepsis syndrome or...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050394
更新日期:1997-06-01 00:00:00
abstract::We present a patient with evidence of severe intravascular hemolysis after mitral valve repair, an established method for the surgical treatment of mitral valve disease to avoid prosthesis related complications. The coincidence of this uncommon complication with hemodynamic instability due to pre-existing myocardial d...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01694714
更新日期:1993-01-01 00:00:00
abstract::Surgical principles of early excision of devitalized tissue and prompt wound closure which govern the management of all traumatic injuries have been developed in the primary treatment of burns. Topical and systemic antibodies which delay wound infection and control invasive sepsis provide an initial period of two to t...
journal_title:Intensive care medicine
pub_type: 杂志文章,评审
doi:10.1007/BF01687263
更新日期:1981-01-01 00:00:00
abstract::A 63-year-old man underwent distal oesophagectomy and proximal gastrectomy. Postoperatively, controlled ventilation was necessary for 53 days because of anastomotic leakage. Multiple sedative regimens proved to be inadequate. By contrast, a fentanyl-midazolam combination with continuous supplementation of clonidine 0....
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01705163
更新日期:1990-01-01 00:00:00