Abstract:
OBJECTIVE:To compare the responses of noninvasively measured tissue oxygen saturation (StO2) and calculated muscle oxygen tension (PmO2) to standard hemodynamic variables for early detection of imminent hemodynamic instability during progressive central hypovolemia in humans. DESIGN:Prospective study. SETTING:Research laboratory. SUBJECTS:Sixteen healthy human volunteers. INTERVENTIONS:Progressive lower body negative pressure (LBNP) to onset of cardiovascular collapse. MEASUREMENTS AND MAIN RESULTS:Noninvasive measurements of blood pressures, heart rate, and stroke volume were obtained during progressive LBNP with simultaneous assessments of StO2, PmO2, and muscle oxygen saturation (SmO2). Forearm SmO2 and PmO2 were determined with a novel near infrared spectroscopic measurement device (UMMS) and compared with thenar StO2 measured by a commercial device (HT). All values were normalized to the duration of LBNP exposure required for cardiovascular collapse in each subject (i.e., LBNP maximum). Stroke volume was significantly decreased at 25% of LBNP maximum, whereas blood pressure was a late indicator of imminent cardiovascular collapse. PmO2 (UMMS) was significantly decreased at 50% of maximum LBNP while SmO2 (UMMS) decreased at 75% of maximum LBNP. Thenar StO2 (HT) showed no statistical change throughout the entire LBNP protocol. CONCLUSIONS:Spectroscopic assessment of forearm muscle PO2 and SmO2 provides noninvasive and continuous measures that are early indicators of impending cardiovascular collapse resulting from progressive reductions in central blood volume.
journal_name
Crit Care Medjournal_title
Critical care medicineauthors
Soller BR,Ryan KL,Rickards CA,Cooke WH,Yang Y,Soyemi OO,Crookes BA,Heard SO,Convertino VAdoi
10.1097/01.CCM.0000295586.83787.7Esubject
Has Abstractpub_date
2008-01-01 00:00:00pages
176-82issue
1eissn
0090-3493issn
1530-0293journal_volume
36pub_type
杂志文章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
abstract:OBJECTIVE:To evaluate the impact of a newly appointed neurointensivist on neurosciences intensive care unit (NICU) patient outcomes and quality of care variables. DESIGN:Observational cohort with historical controls. SETTING:Ten-bed neurointensive care unit in tertiary university hospital. PATIENTS:Mortality, length...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000146131.03578.21
更新日期:2004-11-01 00:00:00
abstract:OBJECTIVE:To evaluate a novel combination of preoperative, intraoperative, and postoperative variables (including the Parsonnet, and the Acute Physiology and Chronic Health Evaluation II and III [APACHE II and III] scores) in cardiac surgery patients in order to predict hospital outcome, complications, and length of st...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章
doi:10.1097/00003246-199511000-00010
更新日期:1995-11-01 00:00:00
abstract:OBJECTIVE:To establish the effect of an audible airleak (around an endotracheal tube) on oxygen consumption (VO2) measurements in pediatric ICU patients. DESIGN:Prospective trial comparing VO2 measurements before and after deflation of the endotracheal tube cuff. SETTING:Pediatric ICU in a large pediatric tertiary ca...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199206000-00012
更新日期:1992-06-01 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: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 ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e31829791da
更新日期:2013-12-01 00:00:00
abstract::The authors placed Swan-Ganz catheters in 11 preterm and 2 term infants with severe cardiopulmonary distress. The infants ranged in weight from 1100-4000 g. The procedure was performed in the neonatal ICU by jugular venous cutdown. Intracardiac pressures and oxygen saturations were measured in each chamber entered. Th...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-197908000-00002
更新日期:1979-08-01 00:00:00
abstract:OBJECTIVE:During cardiopulmonary bypass, inflammation and immunosuppression is present. We measured circulating mediators and monocyte-based functions and tested the hypothesis that these variables are influenced by methylprednisolone (MP) or tirilazad mesylate (TM) treatment. DESIGN:Randomized, controlled, double-bli...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00003246-200111000-00015
更新日期:2001-11-01 00:00:00
abstract:OBJECTIVES:A recent post hoc analysis suggested that driving pressure may be more important than traditional ventilatory variables in determining outcome in mechanically ventilated patients with acute respiratory distress syndrome. We conducted a systematic review and meta-analysis to summarize the risk of mortality fo...
journal_title:Critical care medicine
pub_type: 杂志文章,meta分析
doi:10.1097/CCM.0000000000002838
更新日期:2018-02-01 00:00:00
abstract::Clinically, asystole or a bradyarrhythmia may follow countershock of ventricular fibrillation (VF) in up to 40% of attempts. This study evaluated the effects of artificial cardiac pacing, calcium chloride (CaCl2), and epinephrine in postcountershock asystole/bradycardia. Micromanometer catheters were positioned in the...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198509000-00001
更新日期:1985-09-01 00:00:00
abstract:OBJECTIVE:The effect of levosimendan, a novel inotropic vasodilator (inodilator), on the microvascular gastric mucosal hemoglobin oxygenation (muHbo(2)) is unknown. A possible effect could thereby be selective for the splanchnic region or could primarily reflect changes in systemic oxygen transport (Do(2)) and/or oxyge...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000150653.89451.6f
更新日期:2005-01-01 00:00:00
abstract:OBJECTIVE:To test whether spectral indices derived from the electroencephalogram (EEG), and especially the bispectral index (BIS), can be used as measures of neurologic status in unsedated, critically ill patients. DESIGN:Prospective, observational study. SETTING:Medical intensive care unit (ICU) of a university-affi...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200110000-00024
更新日期:2001-10-01 00:00:00
abstract:OBJECTIVE:To determine the association of pulmonary artery catheter (PAC) use with in-hospital mortality. DESIGN:Prospective, observational study. SETTING:The medical intensive care units (MICU) of two teaching hospitals. METHODS:The study included 751 adults who were admitted to the MICU, excluding those who stayed...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200106000-00010
更新日期:2001-06-01 00:00:00
abstract:OBJECTIVE:Cocaine, which first made its appearance >1,000 yrs ago, is now widely used throughout the world. The physiologic responses to cocaine may cause severe pathologic effects. This review highlights the many critical care challenges resulting from these effects. DESIGN:Historical vignettes, epidemiologic factors...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/01.CCM.0000063258.68159.71
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVE:To compare the cardiopulmonary and peripheral circulatory effects of the nonselective nitric oxide synthase (NOS) inhibitor NG-nitro-L-arginine methyl ester (L-NAME) to the more selective inducible NOS inhibitor S-methylisothiourea (SMT) and to phenylephrine (PE) in endotoxic and normal swine. DESIGN:Prospec...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200009000-00022
更新日期:2000-09-01 00:00:00
abstract:OBJECTIVE:To determine the long-term outcome of noninvasive ventilation in chronic obstructive pulmonary disease patients who refused intubation for acute hypercapnic respiratory failure. DESIGN:Prospective, observational study. SETTING:Noninvasive ventilation unit in an acute regional hospital in Hong Kong. METHODS...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000108879.86838.4F
更新日期:2004-02-01 00:00:00
abstract:OBJECTIVE:The role of systemic corticosteroids in pathophysiology and treatment of acute respiratory distress syndrome is controversial. Use of prehospital systemic corticosteroid therapy may prevent the development of acute respiratory distress syndrome and improve hospital outcomes. DESIGN:This is a preplanned retro...
journal_title:Critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1097/CCM.0b013e31828a1fc7
更新日期:2013-07-01 00:00:00
abstract:OBJECTIVE:To examine the hypothesis that heat stress applied after the administration of bacterial endotoxin is protective. DESIGN:Prospective, randomized, laboratory study. SETTING:University research laboratory. SUBJECTS:One hundred eleven adult male Sprague-Dawley rats (weight range 250 to 400 g). INTERVENTIONS:...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199710000-00025
更新日期:1997-10-01 00:00:00
abstract::The care of critically ill children has become more complex and demanding. This document establishes recommendations for developing regionalized integration of the care of these children into the emergency medical services system. These recommendations were developed by pediatricians with expertise in pediatric critic...
journal_title:Critical care medicine
pub_type: 共识发展会议,杂志文章,评审
doi:10.1097/00003246-200001000-00040
更新日期:2000-01-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to determine the accuracy of clinical diagnoses compared to autopsy findings in critically ill patients in the current medical era. DESIGN:We conducted a retrospective, blinded review of matched medical records and postmortem findings in patients who died between June 2006 and ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e3182a275b1
更新日期:2014-02-01 00:00:00
abstract:OBJECTIVES:To investigate pharmacokinetics and metabolism of sodium citrate in critically ill patients. To determine the risk of citrate accumulation in the setting of liver dysfunction (cirrhosis, hepatorenal syndrome). DESIGN:Prospective cohort study. SETTING:Intensive Care Unit, Department of Medicine IV, Universi...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000084871.76568.E6
更新日期:2003-10-01 00:00:00
abstract:PURPOSE:Periodic diagnostic tests and continuous and intermittent monitoring are integral to critical care medicine. The focus of this article is understanding the impact of existing diagnostic technology, as well as that of new diagnostic technology. DATA SYNTHESIS:We use literature about gastric tonometry to illustr...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/00003246-199909000-00005
更新日期:1999-09-01 00:00:00
abstract::Nine ventilator-dependent patients were successfully weaned from mechanical ventilatory support by high-frequency jet ventilation. All patients had been on ventilatory support for at least 2 wk, and had not responded to attempts at weaning by intermittent mandatory ventilation. ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198409000-00021
更新日期:1984-09-01 00:00:00
abstract:OBJECTIVES:We aimed to implement our Smart Use of Antibiotics Program to ensure the proper use of antimicrobials, improve patient care and outcomes, and reduce the risks of adverse effects and antimicrobial resistance. DESIGN:We compared the time periods before (baseline) and after (intervention) the implementation of...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000003463
更新日期:2019-01-01 00:00:00
abstract:OBJECTIVE:To investigate the effect of norepinephrine on static (right atrial pressure, pulmonary artery occlusion pressure ) and dynamic (pulse pressure variation and arterial systolic pressure variation) preload indicators in experimental hemorrhagic shock. DESIGN:Prospective controlled experimental study. SETTING:...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000182801.48137.13
更新日期:2005-10-01 00:00:00
abstract::We compared the blood culture results obtained either by venipuncture or through an arterial catheter in 51 critically ill patients with 217 clinically suspected episodes of bacteremia. During each episode, three blood culture samples, two arterial and one venous, were drawn within 1 h. One or more cultures were posit...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:
更新日期:1985-08-01 00:00:00
abstract::An 8-yr-old child suffered traumatic bilateral pneumothoraces and a ruptured right main bronchus. Surgical repair of the bronchus was postponed for 18 h after a definite diagnosis was established due to severe hypoxemia and hypercarbia. Only left endobronchial high-frequency ventilation with muscle relaxation correcte...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198712000-00019
更新日期:1987-12-01 00:00:00
abstract:OBJECTIVE:Mitochondrial damage and dysfunction are thought to play an important role in the pathogenesis of sepsis-induced organ failures. Unfortunately, specific markers of mitochondrial damage in vital organs do not currently exist. Recently, carbomyl phosphate synthase (CPS)-1, a protein primarily localized to liver...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000230240.02216.21
更新日期:2006-09-01 00:00:00
abstract:OBJECTIVES:Although studies have indicated that adrenal insufficiency occurs after severe trauma and hemorrhagic shock, it remains controversial whether adrenal function is depressed during the late stage of polymicrobial sepsis. DESIGN:Prospective, controlled animal study. SETTING:A university research laboratory. ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200103000-00026
更新日期:2001-03-01 00:00:00
abstract:OBJECTIVE:Persistent pulmonary hypertension of the newborn is characterized by the presence of intense vasoconstriction and vascular remodeling. Protein tyrosine phosphorylation has been recognized as a critical regulatory element in signal transduction, because it is dynamically regulated by the opposing actions of pr...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00003246-200106000-00030
更新日期:2001-06-01 00:00:00