Abstract:
OBJECTIVE:We tested whether mild hypothermia impacts on circulatory and respiratory dysfunction during experimental endotoxemia. DESIGN:Randomized controlled prospective experimental study. SETTING:Large animal facility, Medical University of Graz, Austria. SUBJECTS:Thirteen anesthetized and mechanically ventilated pigs. INTERVENTIONS:Lipopolysaccharide was administered for 4 hours. With the beginning of lipopolysaccharide infusion, animals were assigned to either normothermia (38°C, n = 7) or mild hypothermia (33°C, n = 6, intravascular cooling) and followed for 8 hours in total. MEASUREMENTS AND MAIN RESULTS:At the end of the protocol, cardiac output was lower in mild hypothermia than in normothermia (4.5 ± 0.4 L/min vs 6.6 ± 0.4 L/min, p < 0.05), but systemic vascular resistance (885 ± 77 dyn·s/cm vs 531 ± 29 dyn·s/cm, p < 0.05) and (Equation is included in full-text article.)(77% ± 6% vs 54% ± 3%, p < 0.05) were higher. Indices of left ventricular contractility in vivo were not different between groups. The high-frequency band in spectral analysis of heart rate variability indicated a better preserved vagal autonomic modulation of sinuatrial node activity in mild hypothermia versus normothermia (87 ± 5 vs 47 ± 5, normalized units, p < 0.05). Plasma norepinephrine levels were elevated compared with baseline in normothermia (2.13 ± 0.27 log pg/mL vs 0.27 ± 0.17 log pg/mL, p < 0.05) but not in mild hypothermia (1.02 ± 0.31 vs 0.55 ± 0.26, p = not significant). At 38°C in vitro, left ventricular muscle strips isolated from the mild hypothermia group had a higher force response to isoproterenol. SaO2 (100% ± 0% vs 92% ± 3%, p < 0.05) and the oxygenation index (PO2/FIO2, 386 ± 52 mm Hg vs 132 ± 32 mm Hg, p < 0.05) were substantially higher in mild hypothermia versus normothermia. Plasma cytokine levels were not consistently different between groups (interleukin 10) or higher (tumor necrosis factor-α and interleukin 6 and 8) during mild hypothermia versus normothermia. CONCLUSION:The induction of mild hypothermia attenuates cardiac and respiratory dysfunction and counteracts sympathetic activation during experimental endotoxemia. This was not associated with lower plasma cytokine levels, indicating a reduction of cytokine responsiveness by mild hypothermia.
journal_name
Crit Care Medjournal_title
Critical care medicineauthors
Schwarzl M,Seiler S,Wallner M,von Lewinski D,Huber S,Maechler H,Steendijk P,Zelzer S,Truschnig-Wilders M,Obermayer-Pietsch B,Lueger A,Pieske BM,Post Hdoi
10.1097/CCM.0b013e31829791dasubject
Has Abstractpub_date
2013-12-01 00:00:00pages
e401-10issue
12eissn
0090-3493issn
1530-0293journal_volume
41pub_type
杂志文章abstract::Computers are commonly used to serve many functions in today's modern intensive care unit. One of the most intriguing and perhaps most challenging applications of computers has been to attempt to improve medical education. With the introduction of the first computer, medical educators began looking for ways to incorpo...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/00003246-200108001-00006
更新日期:2001-08-01 00:00:00
abstract:OBJECTIVE:The aim of the present study was to characterize pulmonary surfactant properties in children undergoing cardiovascular surgery with cardiopulmonary bypass. DESIGN:Prospective clinical trial. SETTING:University hospital pediatric intensive care unit. PATIENTS:Fifty pediatric patients with congenital cardiac...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章
doi:10.1097/00003246-200301000-00045
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND AND METHODS:A study was performed to examine the effects of the calcium-channel blocker levemopamil on neurologic outcome and neuropathology in a clinically relevant model of complete global cerebral ischemia (ventricular fibrillation in cats). Levemopamil was administered to cats starting 5 mins after resus...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199201000-00025
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVE:To determine whether a correlation exists between concentrations of intracellular and extracellular potassium and to determine the frequency of ventricular ectopy in patients after cardiac operations. DESIGN:Prospective, observational clinical evaluation. SETTING:Surgical-respiratory intensive care unit of ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199911000-00018
更新日期:1999-11-01 00:00:00
abstract:RATIONALE:Life and death triage decisions are made daily by intensive care unit physicians. Admission to an intensive care unit is denied when intensive care unit resources are constrained, especially for the elderly. OBJECTIVE:To determine the effect of intensive care unit triage decisions on mortality and intensive ...
journal_title:Critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1097/CCM.0b013e318232d6b0
更新日期:2012-01-01 00:00:00
abstract::Intermittent Mandatory Ventilation (IMV) provides an alternative method of support to assisted and controlled mechanical ventilation in neonates with acute respiratory failure. Specific advantages include the use of only the level of mechanical support which is required on an individual basis. Because intrapleural pre...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-197701000-00004
更新日期:1977-01-01 00:00:00
abstract::Many clinical conditions are associated with an increase in abdominal pressure. While the effects on venous return have been studied in the past, little attention has been given to the effect of abdominal pressure on left-sided hemodynamic events. The effects of acute changes in abdominal pressure (Pab) on left ventri...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198510000-00006
更新日期:1985-10-01 00:00:00
abstract:OBJECTIVES:1) To evaluate the prognostic roles of quantitative CT and pulmonary function tests and 2) to assess the association of dynamic strain and ventilation heterogeneity during unassisted spontaneous breathing with 90-day survival in patients with paraquat poisoning. DESIGN:Prospective study. SETTING:A universi...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000003518
更新日期:2019-02-01 00:00:00
abstract::A survey of acute care/blood gas laboratories was conducted through the memberships of the Society of Critical Care Medicine ( SCCM ) and the National Association of Medical Directors of Respiratory Care ( NAMDRC ). Data were obtained from 227 laboratories and analyzed for operational characteristics, personnel, analy...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198406000-00014
更新日期:1984-06-01 00:00:00
abstract:BACKGROUND:Although thrombocytopenia in the intensive care unit (ICU) is associated with a poorer outcome, the precise relationship between the time course of platelet counts and the mortality rate has not been well defined. OBJECTIVE:To describe the time course of the platelet count in relation to the mortality rate ...
journal_title:Critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1097/00003246-200204000-00005
更新日期:2002-04-01 00:00:00
abstract::The heart rate variability (HRV) of 82 patients exhibiting sinus rhythm and admitted for possible myocardial infarction (MI) was evaluated. Using a simple information entropy measure to quantify the HRV, patients subsequently diagnosed with MI or experiencing significant dysrhythmia (n = 35) exhibited less entropy (0....
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198801000-00014
更新日期:1988-01-01 00:00:00
abstract::In the last three decades, numerous articles on plasma catecholamine concentrations in various settings have been published in the medical literature. Despite this abundance of information, no summary article has analyzed the species variations in circulating catecholamine concentrations. In this paper, the plasma cat...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:
更新日期:1989-11-01 00:00:00
abstract::The resolution time of pneumothorax in neonates requiring tube thoracotomy is not known. We found that 28%, 50%, and 83% of 54 pneumothoraces in 40 neonates resolved within 24, 96, and 168 h of tube thoracotomy, respectively. Pneumothoraces that persisted beyond 168 h were in infants requiring ventilatory assistance. ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198505000-00010
更新日期:1985-05-01 00:00:00
abstract:OBJECTIVE:To determine the functionality of identified polymorphisms in the promoter and upstream regions of the interleukin-10 gene in terms of release of interleukin-10 from lipopolysaccharide-stimulated whole blood from healthy volunteers and to evaluate the relationship of interleukin-10 polymorphisms to interleuki...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200301000-00005
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVE:The genetic background of hypertensive crisis is unknown. We examined the association of polymorphisms in genes involved in the renin-angiotensin-aldosterone-system with hypertensive crisis. DESIGN:Population-based case-control study. SETTING:Emergency department at a tertiary care university hospital. PAT...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200210000-00010
更新日期:2002-10-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to examine whether anandamide, an endogenous cannabinoid receptor ligand, is involved in the pathogenesis of septic encephalopathy. DESIGN:Prospective, controlled study. SUBJECTS:Male Wistar rats (7 wks old) were randomly divided into four groups as follows: group 1, control (...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000187010.14426.cc
更新日期:2005-11-01 00:00:00
abstract:OBJECTIVE:To compare silver-coated and uncoated central venous catheters regarding bacterial colonization. To assess the relative contribution of catheter hub and skin colonization to catheter tip colonization. DESIGN:Prospective, randomized clinical trial. SETTING:Intensive care unit in a university hospital. PATIE...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00003246-199903000-00028
更新日期:1999-03-01 00:00:00
abstract:OBJECTIVES:To explore the effects of dobutamine and norepinephrine on the global cardiovascular response and on the relationship between oxygen uptake (VO2) and oxygen delivery (DO2) during an acute reduction in blood flow associated with tamponade. DESIGN:Prospective, randomized, controlled acute intervention study. ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199402000-00022
更新日期:1994-02-01 00:00:00
abstract::Balloon flotation catheterization of the central circulation provides data which may be most meaningful and important to the management of critically ill patients. It allows the measurements of the filling pressures of the right and left ventricle as well as the cardiac output. These data combined with information con...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-197505000-00001
更新日期:1975-05-01 00:00:00
abstract:OBJECTIVE:Life-threatening conditions cause severe changes in the organization and conformation of macromolecules, creating urgent requirements for protein repair to ensure survival. As molecular chaperones, heat shock proteins (HSP) that have specialized functions in protein folding are now well established to restore...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:
更新日期:2002-01-01 00:00:00
abstract:OBJECTIVE:To evaluate the prevalence and magnitude of weakness in patients receiving chronic mechanical ventilation and the impact of providing aggressive whole-body rehabilitation on conventional weaning variables, muscle strength, and overall functional status. DESIGN:Retrospective analysis of 49 consecutive patient...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000181730.02238.9b
更新日期:2005-10-01 00:00:00
abstract:OBJECTIVE:Spread of multidrug-resistant organisms within the intensive care unit (ICU) results in substantial morbidity and mortality. Novel strategies are needed to reduce transmission. This study sought to determine if the use of daily chlorhexidine bathing would decrease the incidence of colonization and bloodstream...
journal_title:Critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1097/CCM.0b013e31819ffe6d
更新日期:2009-06-01 00:00:00
abstract:OBJECTIVE:To investigate the relationship between nitric oxide production, endotoxemia, and hemodynamic alterations in human septic shock. DESIGN:Prospective study. SETTING:A 32-bed intensive care unit in a university referral hospital. PATIENTS:Two groups of septic patients with shock (n = 13) or without shock (n =...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199502000-00009
更新日期:1995-02-01 00:00:00
abstract:OBJECTIVE:Acute renal failure remains a major challenge in critical care medicine. Both neutrophils and chemokines have been proposed as key components in the development of acute renal failure. Although the Duffy antigen receptor for chemokines (DARC) is present in several tissues and a highly specific ligand for vari...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000280570.82885.32
更新日期:2007-09-01 00:00:00
abstract:OBJECTIVES:To determine the amount of spontaneous variability of cardiac output over time in critically ill patients, and to determine the effect of mechanical ventilation on cardiac output variability over time. DESIGN:Case series. SETTING:Medical intensive care unit in a Veterans Affairs Medical Center. PATIENTS:T...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199402000-00012
更新日期:1994-02-01 00:00:00
abstract:BACKGROUND AND METHODS:We aimed to characterize the effects of an endotoxin insult (Escherichia coli 0127:B8) on the relationships between pulmonary vascular pressure and flow in intact dogs. To achieve this goal, multipoint plots of total pressure gradient, arterial pressure gradient, and venous pressure gradient vs. ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199207000-00018
更新日期:1992-07-01 00:00:00
abstract::A meta-analysis was performed of 15 randomized studies on the prophylaxis with cimetidine and/or ant-acids of upper GI bleeding acquired in the ICU. There were eight comparisons of a group receiving cimetidine with a control group, nine comparisons of a group receiving antacids with a control group, and ten comparison...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章
doi:10.1097/00003246-198909000-00003
更新日期:1989-09-01 00:00:00
abstract:OBJECTIVE:Opioids are frequently used during mechanical ventilation for severe viral infection in infancy. Opioid receptors have immunomodulatory properties, but nothing is known about their antiviral effects. We therefore aimed to investigate the role of opioid receptors in virus-induced airway inflammation. PATIENTS...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e31826767a8
更新日期:2013-01-01 00:00:00
abstract::Subcutaneous, transcutaneous, and conjunctival oxygen tensions (PscO2, PtcO2, and PcjO2, respectively) were measured in anesthetized dogs subjected sequentially to normoxia, hyperoxia, and hypoxia. Intravascular pressure, hemodynamic and oxygen transport variables were measured simultaneously. PtcO2 and PcjO2 closely ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198812000-00011
更新日期:1988-12-01 00:00:00
abstract::In a series of 56 patients (24 uncomplicated postoperative and 32 septic patients), neopterin and elastase alpha 1 protease inhibitor complex (E-alpha 1 PI) plasma levels were measured daily. The clinical course of each patient was evaluated with the Multiple Organ Failure (MOF) score according to Goris. Neopterin cou...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198903000-00004
更新日期:1989-03-01 00:00:00