Abstract:
OBJECTIVE:To characterize the endothelium-dependent and endothelium-independent components of abnormal pulmonary vascular tone in canine oleic acid lung injury. DESIGN:Prospective, interventional study. SETTING:University laboratory. SUBJECTS:Twenty anesthetized mongrel dogs. INTERVENTIONS:Right heart catheterization was performed to measure pulmonary vascular resistance before and after induction of oleic acid lung injury in ten anesthetized and ventilated dogs. Pulmonary and internal mammary artery rings were sampled in these ten dogs with oleic acid injury and in ten anesthetized healthy control dogs. We also studied the responses to acetylcholine, to phenylephrine, and to hypoxia of the intact or endothelium-denuded rings mounted in organ baths. MEASUREMENTS AND MAIN RESULTS:Oleic acid lung injury was associated with an increase in pulmonary vascular resistance from 118 +/- 11 to 245 +/- 47 dyne.sec.cm-5.m-2 and a decrease in the Pao2/Fio2 ratio from 451 +/- 42 to 139 +/- 26 mm Hg (mean +/- se, p <.05 and p <.01, respectively). Acetylcholine-induced relaxation was decreased in the oleic acid pulmonary artery rings compared with the controls (85 +/- 3% vs. 99 +/- 6% of precontraction level, p <.05). Phenylephrine-induced contraction was decreased in denuded oleic acid pulmonary artery rings compared with the controls (81 +/- 8% vs. 102 +/- 10% of contraction to KCl 120 mM, p <.05). In vitro hypoxia induced a small endothelium-dependent contraction followed by an endothelium-independent relaxation. These responses were not different in oleic acid lung artery rings and in controls, except for a decrease in hypoxic contraction in the oleic acid pulmonary artery rings. In vitro hypoxic pulmonary vasoconstriction and relaxation were, respectively, directly (r =.48) and inversely (r = -.67) correlated with oleic acid-induced increase in pulmonary vascular resistance. There was no correlation between in vitro internal mammary artery reactivity and oleic acid-induced increase in pulmonary vascular resistance. CONCLUSIONS:Oleic acid-induced lung injury slightly impairs pulmonary arterial endothelium-dependent relaxation and endothelium-independent contraction. In vitro hypoxic pulmonary vasoreactivity is related to in vivo oleic acid-induced increase in pulmonary vascular resistance.
journal_name
Crit Care Medjournal_title
Critical care medicineauthors
Kafi SA,Scillia P,Mélot C,Gevenois PA,Pagnamenta A,Naeije Rdoi
10.1097/00003246-200207000-00028subject
Has Abstractpub_date
2002-07-01 00:00:00pages
1565-9issue
7eissn
0090-3493issn
1530-0293journal_volume
30pub_type
杂志文章abstract::The hemodynamic effects of digitalis were examined in ten patients with acute cardiac failure. Administration of 10 micrograms/kg of digoxin iv resulted in significant increases in cardiac index, stroke volume index, and left ventricular stroke work index within one hour in five patients with acute myocardial infarcti...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198711000-00002
更新日期:1987-11-01 00:00:00
abstract:OBJECTIVES:The purposes of this report are to a) describe the University of Michigan experience with venoarterial or venovenous extracorporeal life support for severe pediatric pulmonary rescue therapy, and b) examine survivors and nonsurvivors for differences that might be useful for examination in future, prospective...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199208000-00008
更新日期:1992-08-01 00:00:00
abstract:OBJECTIVE:To determine whether activation of the nuclear enzyme poly(adenosine 5'-diphosphate [ADP]-ribose) synthetase (PARS) contributes to mortality rate, myocardial dysfunction, and cardiovascular collapse in a porcine model of sepsis induced by implantation of an infected clot. DESIGN:Prospective, random animal st...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200205000-00004
更新日期:2002-05-01 00:00:00
abstract:UNLABELLED:Meningococcal septic shock (MSS) has high mortality and morbidity rates. In addition to the traditional prompt antibiotics and respiratory and circulatory support, new treatment strategies have been proposed. AGAINST THE INFLAMMATORY CASCADE:Immunotherapy, such as antiserum to Escherichia coli J5 and human ...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/00003246-200009001-00013
更新日期:2000-09-01 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:OBJECTIVES:a) To investigate whether the patient work of breathing needed to trigger inspiration is affected by the type of ventilator delivering pressure-support ventilation for mechanically ventilated pediatric patients. b) To determine whether changes in oxygen consumption (VO2) trend with changes in work of breathi...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1994-12-01 00:00:00
abstract:OBJECTIVE:Recent studies have demonstrated the therapeutic effectiveness and pharmacologic mechanisms of hyperbaric oxygen therapy (HBOT) in the treatment of a systemic shock state. To elucidate the in vivo role of HBOT during sepsis, we evaluated the effects of HBOT on intestinal mucosal injury and bacterial transloca...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000132898.27101.6c
更新日期:2004-08-01 00:00:00
abstract:OBJECTIVES:Fever is common and associated with increased mortality among patients admitted to adult ICUs, yet recent literature suggests that the incidence of fever may be decreasing. The objective of this study was to determine whether the incidence of fever in adult ICUs changed over time and the factors responsible ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e31828a43b2
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVES:Anxiety results from the anticipation of a threat and might be associated with poor outcome in the critically ill. This study aims at showing that anxiety at admission in critically ill patients is associated with new organ failure over the first 7 days of ICU hospitalization independently of baseline organ ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000004495
更新日期:2020-10-01 00:00:00
abstract:INTRODUCTION:The difficult airway is a common problem in adult critical care patients. However, the challenge is not just the establishment of a safe airway, but also maintaining that safety over days, weeks, or longer. AIMS:This review considers the management of the difficult airway in the adult critical care enviro...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0b013e31817d7ae1
更新日期:2008-07-01 00:00:00
abstract:OBJECTIVES:Case fatality in pregnancy-associated severe sepsis or septic shock appears reduced compared with nonpregnant women with severe sepsis or septic shock. It remains unclear if this difference is due to pregnancy or better baseline health status, among others. Our study compared adverse outcomes of pregnancy-as...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000003348
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVE:To determine whether treatment with patient-controlled analgesia (PCA) alone or in combination with nonsteroidal anti-inflammatory drugs can prevent postoperative pulmonary complications after cardiac surgery, when compared with conventional nurse-controlled analgesia. DESIGN:Randomized controlled trial. SE...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00003246-199910000-00025
更新日期:1999-10-01 00:00:00
abstract:OBJECTIVES:Extracorporeal cardiopulmonary resuscitation has shown survival benefit in select patients with refractory cardiac arrest but there is insufficient data on the frequency of different types of brain injury. We aimed to systematically review the prevalence, predictors of and survival from neurologic complicati...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000004377
更新日期:2020-07-01 00:00:00
abstract:OBJECTIVES:Most knowledge related to the pathophysiology of microcirculation in ischemic stroke comes from experimental research. Unfortunately, data on microcirculation in the human brain are limited, partially as a result of the lack of appropriate investigational techniques. The objective of our study was to test th...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e31820ead5e
更新日期:2011-05-01 00:00:00
abstract:BACKGROUND AND METHODS:This study was designed to test whether dopexamine, a dopaminergic and beta 2-adrenergic agonist, would a) increase systemic oxygen delivery (DO2) in endotoxic dogs, and b) interfere with the ability of resting skeletal muscle to extract oxygen. There were three treatment groups (n = 6 in each gr...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199102000-00015
更新日期:1991-02-01 00:00:00
abstract:OBJECTIVE:To compare urea nitrogen removal by continuous hemodiafiltration vs. functional native kidneys in critically ill, septic patients receiving > 2 g of amino acids/kg body weight per day. DESIGN:Prospective, comparative, unblinded study. SETTING:Trauma critical care units of a Level I adult trauma hospital. P...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199403000-00009
更新日期:1994-03-01 00:00:00
abstract::In 179 healthy boys and girls, the relationship between body surface area (S) in dm2 and body weight (bw) in kg was investigated. The body surface was calculated from the DuBois and DuBois formula. For infants below 20 kg, the relationship followed the regression equation S=3.6kg + 9; r=0.996. For infants with bw betw...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198111000-00005
更新日期:1981-11-01 00:00:00
abstract:OBJECTIVES:To test the hypothesis that after cecal ligation and puncture in the rat, there is increased expression of the tumor necrosis factor (TNF)/interleukin-1-dependent, acute-phase reactant alpha 1-acid glycoprotein in the liver, and that this change correlates temporally with increased abundance of TNF-alpha in ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199612000-00004
更新日期:1996-12-01 00:00:00
abstract:OBJECTIVES:To determine whether pulse oximetry is accurate and if it correlates with arterial blood gas saturation in pediatric patients with sickle cell anemia. DESIGN:Prospective, comparative study using a convenience sample of patients with sickle cell anemia who had simultaneous arterial blood gas sampling and pul...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200109000-00025
更新日期:2001-09-01 00:00:00
abstract:OBJECTIVES:To determine the outcome of oxygen consumption (VO2) and energy expenditure after cessation of sedation in severe head-injured patients and to assess its usefulness as a predictor of neurologic severity. DESIGN:Prospective, descriptive study. SETTING:Neurosurgical intensive care unit (ICU) in a university ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199407000-00011
更新日期:1994-07-01 00:00:00
abstract:OBJECTIVES:Racial/ethnic differences in palliative care resource use after stroke have been recognized, but it is unclear whether patient or hospital characteristics drive this disparity. We sought to determine whether palliative care use after intracerebral hemorrhage and ischemic stroke differs between hospitals serv...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000002762
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND AND METHODS:To determine the effects of reduced cerebral perfusion pressures produced by hemorrhage alone or in combination with intracranial hypertension on thromboxane A2 (TxA2) production, we undertook a randomized study in 38 anesthetized, mongrel dogs. Animals were subjected to 30 mins of hemorrhagic sh...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199104000-00013
更新日期:1991-04-01 00:00:00
abstract:OBJECTIVE:To evaluate the early myocardial biochemical inflammatory response with the microdialysis technique during porcine endotoxemia and to simultaneously monitor systemic hemodynamics. DESIGN:Prospective, randomized, placebo-controlled trial with parallel groups. SETTING:Animal research laboratory at the Univers...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000075740.61294.a6
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVE:Mannitol is widely used in hospitals worldwide to treat patients with high intracranial pressure and/or cerebral edema. One of the mechanisms by which mannitol is thought to affect intracranial pressure is by increasing the patient's serum osmolarity, but not the osmolarity in the brain or cerebrospinal fluid...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章
doi:10.1097/01.CCM.0000050287.68977.84
更新日期:2003-02-01 00:00:00
abstract:OBJECTIVE:Several studies have suggested that intravenous hydroxyethyl starch treatment may dampen acute inflammatory responses. It is well documented that limited oxygen delivery to tissues (hypoxia) is common in acute inflammation, and numerous parallels exist between acute responses to hypoxia and to inflammation, i...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000218814.77568.BC
更新日期:2006-06-01 00:00:00
abstract:OBJECTIVE:To appraise the literature on the effect of initial renal replacement therapy (RRT) modality on clinical outcomes. DESIGN:Systematic review and meta-analysis. SETTING:Academic medical center. PATIENTS AND PARTICIPANTS:Adult critically ill patients with acute kidney injury. INTERVENTIONS:Continuous vs. int...
journal_title:Critical care medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1097/01.CCM.0B013E3181611F552
更新日期:2008-02-01 00:00:00
abstract:OBJECTIVES:The electronic health record is a primary source of information for all professional groups participating in ICU rounds. We previously demonstrated that, individually, all professional groups involved in rounds have significant blind spots in recognition of patient safety issues in the electronic health reco...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000003302
更新日期:2018-10-01 00:00:00
abstract:OBJECTIVE:To assess the possibility that acute respiratory distress syndrome (ARDS) of pulmonary and nonpulmonary origins represent two distinct syndromes. DESIGN:Analysis of data collected prospectively from an inception cohort of 117 patients with ARDS. SETTING:Adult intensive care unit (ICU), university/postgradua...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200103000-00016
更新日期:2001-03-01 00:00:00
abstract:OBJECTIVES:The epidemiology of chronic critical illness is not well known. We aimed to estimate the prevalence, mortality, and costs associated with chronic critical illness in Japan. DESIGN:A nationwide inpatient administrative database study in Japan from April 2011 to March 2018. SETTING:Six hundred seventy-nine a...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000004723
更新日期:2021-01-01 00:00:00
abstract:OBJECTIVES:To synthesize the literature describing interventions to improve hand hygiene in ICUs, to evaluate the quality of the extant research, and to outline the type, and efficacy, of interventions described. DATA SOURCES:Systematic searches were conducted in November 2016 using five electronic databases: Medline,...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0000000000002691
更新日期:2017-11-01 00:00:00