Abstract:
OBJECTIVE:To determine the frequency and effects of weaning-related myocardial ischemia on weaning outcomes in patients with coronary artery disease. DESIGN:Prospective cohort study. SETTING:Medical and cardiac intensive care units of a 300-bed teaching community hospital. MEASUREMENTS AND MAIN RESULTS:Three-lead ST segments, heart rate-systolic blood pressure products, and respiratory rate/tidal volume ratios were obtained for patients with coronary artery disease just before and during their initial trials of weaning from mechanical ventilation. ST segments were interpreted by a blinded cardiologist. Eighty-three patients with a mean age of 72.4 +/- 1.1 years (mean +/- SEM), a mean Acute Physiology and Chronic Health Evaluation II score of 16.4 +/- 0.8, and a mean duration of mechanical ventilation of 4.6 +/- 0.9 days were studied. Eight patients showed electrocardiographic evidence of ischemia during weaning, and seven of these patients failed to be liberated on their first day of weaning. The presence of ischemia significantly increased the risk of weaning failure (risk ratio, 2.1; 95% confidence interval, 1.4-3.1). The rate-pressure product for the group as a whole increased significantly during weaning, from 11.9 +/- 0.4 to 13.5 +/- 0.5 mm Hg x beats/min x 10(3) (p < .01). The increase in rate-pressure product tended to be greater in patients who became ischemic (12.8 +/- 0.9 to 17.3 +/- 2.0 mm Hg x beats/min x 10(3)) than in patients who were not ischemic during weaning (11.8 +/- 0.4 to 13.0 +/- 0.5 mm Hg x beats/min x 10(3); p = .05). The rate/volume ratio did not change significantly during weaning, but the rate/volume ratios after both 1 min (65.6 +/- 4.6 vs. 98.0 +/- 9.4 breaths/min/L; p < .05) and 30 mins (68.6 +/- 4.3 vs. 91.1 +/- 8.9 breaths/min/L; p < .05) of unassisted breathing were lower in successful than in unsuccessful patients. CONCLUSION:Electrocardiographic evidence of myocardial ischemia occurs frequently and is associated with significantly increased risk of first-day weaning failure in patients with coronary artery disease.
journal_name
Crit Care Medjournal_title
Critical care medicineauthors
Srivastava S,Chatila W,Amoateng-Adjepong Y,Kanagasegar S,Jacob B,Zarich S,Manthous CAdoi
10.1097/00003246-199910000-00005subject
Has Abstractpub_date
1999-10-01 00:00:00pages
2109-12issue
10eissn
0090-3493issn
1530-0293journal_volume
27pub_type
临床试验,杂志文章abstract:OBJECTIVE:Increasing evidence, including publication of the Transfusion Requirements in Critical Care trial in 1999, supports a lower hemoglobin threshold for RBC transfusion in ICU patients. However, little is known regarding the influence of this evidence on clinical practice over time in a large population-based coh...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e31828e9a49
更新日期:2013-10-01 00:00:00
abstract:OBJECTIVE:To study the pulmonary effects of aspirating a mixture of sucralfate in water and sucralfate in hydrochloric acid in an animal model of aspiration pneumonia. DESIGN:Prospective, randomized, controlled study with repeated measures. SETTING:University research laboratory. SUBJECTS:Thirty-two in situ, isolate...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199309000-00020
更新日期:1993-09-01 00:00:00
abstract:OBJECTIVE:To review the institutional experience of a national tertiary referral center for extracorporeal life support (ECLS) in severe varicella pneumonia. DATA SOURCES:Hospital records and ECLS flow sheets. STUDY SELECTION:All pediatric (nonneonatal) and adult patients who were treated for varicella pneumonia with...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199706000-00014
更新日期:1997-06-01 00:00:00
abstract:OBJECTIVE:Nitric oxide regulates epithelial permeability and other properties of the intestinal mucosal barrier. It previously has been shown in animals that intestinal mucosal nitric oxide production is impaired during gut hypoperfusion. The study was performed to confirm the presence of intestinal mucosal nitric oxid...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000080489.67211.1F
更新日期:2003-08-01 00:00:00
abstract:OBJECTIVES:Sepsis-associated changes of the arachidonic acid metabolism and the utility of arachidonic acid metabolites for the diagnosis of sepsis have been poorly investigated so far. Therefore, the primary objective of our study was to screen for differentially regulated arachidonic acid metabolites in septic patien...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e3182416f05
更新日期:2012-05-01 00:00:00
abstract::Flow rates and pressure recording accuracy were compared for Argyle 14-, 16-, and 18-ga double-lumen and Edwards 7-Fr triple-lumen CVP catheters. Physiologic saline solution was pressure-infused into dogs through one lumen and CVP was measured via the other lumen. CVP accuracy was unaltered by simultaneous rapid infus...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198507000-00017
更新日期:1985-07-01 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:OBJECTIVE:To evaluate the hypothesis that splanchnic ischemia and mucosal hypoxia are responsible for lipopolysaccharide-induced intramucosal acidosis in pigs. DESIGN:Prospective, randomized, unblinded study. SETTING:Surgical research laboratory at a large, university-affiliated medical center. SUBJECTS:Anesthetized...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199507000-00011
更新日期:1995-07-01 00:00:00
abstract::Gastric mucosal damage produced by topical application of necrotizing agents is diminished by topical or systemic pretreatment with a variety of E and F prostaglandins. The rat restraint model of gastric mucosal injury is more analogous to clinical stress ulceration than are models using intragastric application of to...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198901000-00011
更新日期:1989-01-01 00:00:00
abstract:OBJECTIVE:To describe a case of intentional ingestion of hand sanitizer in our hospital and to review published cases and those reported to the American Association of Poison Control Centers' National Poison Data System. DESIGN:A case report, a literature review of published cases, and a query of the National Poison D...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0b013e31822f09c0
更新日期:2012-01-01 00:00:00
abstract:OBJECTIVE:To define a biomarker panel to predict organ dysfunction, shock, and in-hospital mortality in emergency department (ED) patients with suspected sepsis. DESIGN:Prospective observational study. SETTING:EDs of ten academic medical centers. PATIENTS:There were 971 patients enrolled. INCLUSION CRITERIA:1) ED p...
journal_title:Critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1097/CCM.0b013e318192fd9d
更新日期:2009-01-01 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:Antimicrobial effects of nitric oxide (NO) have been demonstrated in vitro against a variety of infectious pathogens, yet in vivo evidence of a potential therapeutic role for exogenous NO as an antimicrobial agent is limited. Thus, we assessed the effects of inhaled NO on pulmonary infection, leukocyte infilt...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200007000-00035
更新日期:2000-07-01 00:00:00
abstract:OBJECTIVE:To determine the association between symptomatic central venous line-related deep venous thrombosis and a mortality-adjusted measure of duration of mechanical ventilation in critically ill children with central venous lines. DESIGN:Retrospective matched cohort study. SETTING:Eleven pediatric intensive care ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e31820eb8a1
更新日期:2011-05-01 00:00:00
abstract:OBJECTIVE:Our first objective was to determine a blood lactate threshold predictive of survival in human immunodeficiency virus patients experiencing lactic acidosis related to nucleoside analogs, and second, to test l-carnitine for the treatment of patients exceeding that threshold. DESIGN:a) Retrospective study usin...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/01.CCM.0000053649.69377.08
更新日期:2003-04-01 00:00:00
abstract:OBJECTIVE:To compare the effects of two different antibiotic regimes on the colonization and infection rates of critically ill pediatric patients. DESIGN:A prospective randomized trial. SETTING:A pediatric ICU in a university hospital. PATIENTS:Fifty critically ill pediatric patients who required intensive care for ...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00003246-199110000-00005
更新日期:1991-10-01 00:00:00
abstract:OBJECTIVE:To cost adult intensive care by determining inputs to production, resource consumption per patient, and total cost per intensive care unit (ICU) stay. DESIGN:Prospective cost-accounting analysis of each patient stay in the ICU, over a 1-yr period. SETTING:An 11-bed, medical/surgical adult ICU, in a 932-bad ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199607000-00017
更新日期:1996-07-01 00:00:00
abstract:OBJECTIVES:With the exception of a few single-center descriptive reports, data on critical care organizations are relatively sparse. The objectives of our study were to determine the structure, governance, and experience to date of established critical care organizations in North American academic medical centers. DES...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000001200
更新日期:2015-10-01 00:00:00
abstract::Oxygen availability during cardiopulmonary bypass was assessed in 22 patients under hypothermic and relatively normothermic conditions. The patients were divided into two groups, 17 of whom received ACD blood and 5, CPD blood. The mean P50 for all patients fell from a preoperative value of 25.9 +/- 2.4 (SD) to 15.6 +/...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-197705000-00007
更新日期:1977-05-01 00:00:00
abstract:OBJECTIVES:To determine how many multicenter, randomized controlled trials have been published that assess mortality as a primary outcome in the adult intensive care unit population, and to evaluate their methodologic quality. DATA SOURCE:A sensitive search strategy for randomized controlled trials was conducted in th...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0b013e318168ea3e
更新日期:2008-04-01 00:00:00
abstract:OBJECTIVES:To describe the incident fracture rate in survivors of critical illness and to compare fracture risk with population-matched control subjects. DESIGN:Retrospective longitudinal case-cohort study. SETTING:A tertiary adult intensive care unit in Australia. PATIENTS:All patients ventilated admitted to intens...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e318211ff3d
更新日期:2011-06-01 00:00:00
abstract:OBJECTIVES:To investigate whether admission B-type natriuretic peptide levels predict the development of acute kidney injury in acute coronary syndromes. DESIGN:Prospective study. SETTING:Single-center study, 13-bed intensive cardiac care unit at a University Cardiological Center. PATIENTS:Six-hundred thirty-nine ac...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000000025
更新日期:2014-03-01 00:00:00
abstract:OBJECTIVE:To determine factors influencing rationing decisions in a surgical ICU during a temporary nursing shortage when two to six of the unit's 16 beds were closed. DESIGN:Blinded, concurrent data collection, retrospective chart review. SETTING:Surgical ICU. PATIENTS:All patients (n = 308) for whom a surgical ICU...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199203000-00016
更新日期:1992-03-01 00:00:00
abstract:BACKGROUND:Increased cardiac index, oxygen delivery (DO2), and oxygen consumption (VO2) patterns were shown to characterize the physiologic status of surviving high-risk surgical patients, and indicate increased metabolic needs; relatively normal DO2 and VO2 values were found to characterize the sequential pattern of n...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199105000-00014
更新日期:1991-05-01 00:00:00
abstract::The current investigation describes the morphological and pathophysiological effects of stroma-free hemoglobin solution (SFH) on the liver and kidney. One h after a 75% blood volume exchange in animals receiving 7% SFH, hepatic morphology was normal. Animals whose blood was similarly exchanged with 7% albumin demonstr...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198204000-00011
更新日期:1982-04-01 00:00:00
abstract:OBJECTIVE:The elevation of the percentage of regulatory CD4+CD25+ T lymphocytes (Treg) has been recently described during septic shock. The objective of the present study was to investigate whether this increased percentage was due to Treg proliferation. DESIGN:Observational study. SETTING:Adult intensive care units ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000145999.42971.4b
更新日期:2004-11-01 00:00:00
abstract:OBJECTIVE:To investigate whether inhibition of cyclooxygenase-2, a critical component of the inflammatory pathway, is neuroprotective in a neonatal rat model of cerebral hypoxia-ischemia. The development of brain inflammation largely contributes to neonatal brain injury that may lead to a lifetime of neurologic deficit...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e3181cb1158
更新日期:2010-02-01 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:OBJECTIVES:There is limited evidence supporting the widespread use of α2 agonists (clonidine and dexmedetomidine) in pediatric critical care sedation. This study sought to test the association between the use of α2 agonists and enhanced sedation. DESIGN:A retrospective observational cohort study was conducted. Noninfe...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000003789
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVE:Exosomes are small, cell-released vesicles (40-100 nm in size) with the potential to transfer proteins, lipids, small RNAs, messenger RNAs, or DNA between cells via interstitial fluids. Due to their role in tissue homeostasis, exosomes have emerged as a new type of therapeutic and diagnostic (theranostic) too...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0000000000002328
更新日期:2017-06-01 00:00:00