Abstract:
OBJECTIVES:Controversy exists regarding the ideal injectate temperature for measuring cardiac output. Iced temperature injectate gives a higher signal/noise ratio and less variability in the measured cardiac output. Thus, less volume and fewer measurements are required. Advocates of room temperature injectate have suggested that iced temperature injectate may perturb cardiodynamics. This concern has remained largely untested. To help resolve this controversy, we examined the effects of 5 mL iced injectate (0 degrees to 4 degrees) infusions on cardiodynamics. DESIGN:Prospective, randomized, controlled study. SETTING:A critical care research laboratory. SUBJECTS:Five domestic pigs, weighing between 20 to 25 kg. INTERVENTIONS:Under barbiturate anesthesia, pigs underwent placement of a) a thermodilution catheter in the right internal jugular vein; b) a right carotid artery catheter for mean arterial pressure; and c) sonomicrometry crystals for dynamic measurements of left ventricular dimensions. Calculations were made of end-systolic and end-diastolic left ventricular volume and ejection fraction. Six cardiac output measurements were performed in each pig. Data were obtained at baseline (just before iced temperature injectate infusion) and every 3 sec for 9 secs. MEASUREMENTS AND MAIN RESULTS:The only significant effect seen with iced temperature injectate infusion was a small, transient decrease in heart rate (-5.9 +/- 1.1 beats/min from a baseline heart rate of 144.8 +/- 20.6 beats/min). Indices of preload, contractile function, and dynamic cardiac geometry were unaffected. CONCLUSIONS:Iced temperature injectate used in clinically relevant volumes causes transient negative chronotropic effects, but reservations regarding other perturbations of cardiodynamics are unfounded. Thus, the use of iced temperature injectate for cardiac output determination is still a viable alternative to room temperature injectate use, especially when a larger signal/noise ratio is required.
journal_name
Crit Care Medjournal_title
Critical care medicineauthors
Fang HK,Krahmer RL,Rypins EB,Law WRdoi
10.1097/00003246-199603000-00021subject
Has Abstractpub_date
1996-03-01 00:00:00pages
495-500issue
3eissn
0090-3493issn
1530-0293journal_volume
24pub_type
杂志文章abstract:BACKGROUND:Millions of patients are discharged from intensive care units annually. These intensive care survivors and their families frequently report a wide range of impairments in their health status which may last for months and years after hospital discharge. OBJECTIVES:To report on a 2-day Society of Critical Car...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0b013e318232da75
更新日期:2012-02-01 00:00:00
abstract::The definition of sepsis has been recently modified to accommodate emerging knowledge in the field, while at the same time being recognized as challenging, if not impossible, to define. Here, we seek to clarify the current understanding of sepsis as one that has been typically framed as a disorder of inflammation to o...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000002172
更新日期:2017-02-01 00:00:00
abstract:OBJECTIVE:To study the therapeutic effect of granulocyte colony-stimulating factor (G-CSF) on the mortality rate and host defense pattern in fulminant intra-abdominal sepsis. DESIGN:Prospective, randomized, controlled trial. SETTING:Research laboratory in a university hospital. SUBJECTS:Adult male Wistar rats. INTE...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199605000-00016
更新日期:1996-05-01 00:00:00
abstract::Mucus plugging of a large airway resulted in the formation of a check-valve mechanism and pulmonary hyperinflation, rather than atelectasis. Fiberoptic bronchoscopy was both diagnostic and curative. The physician should be aware that mucus plugging may have unusual presentations and may mimic other clinical entities. ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198609000-00015
更新日期:1986-09-01 00:00:00
abstract::Among Gram-positive pathogens, Staphylococcus aureus is the leading cause of death from nosocomial pneumonia. The bacterium developed progressive resistance to beta-lactams, and methicillin-resistant strains emerged in the 1980s. In consequence, vancomycin has become the drug of choice for treatment of this infection ...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/00003246-200104001-00005
更新日期:2001-04-01 00:00:00
abstract::The disciplines of critical care and palliative care may initially seem to be polar opposites, yet they share fundamental features. Both focus on the sickest patients in the healthcare system. Each discipline's primary goal-extending life for critical care and comfort and quality of life for palliative care-represents...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/01.CCM.0000237347.94229.23
更新日期:2006-11-01 00:00:00
abstract:OBJECTIVES:To characterize the landscape of process of care and safety outcomes for tracheal intubation across pediatric intensive care units BACKGROUND:Procedural process of care and safety outcomes of tracheal intubation across pediatric intensive care units has not been described. We hypothesize that the novel Nati...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e3182746736
更新日期:2013-03-01 00:00:00
abstract:OBJECTIVE:To determine if there is a difference in nosocomial pneumonia frequency rate in mechanically ventilated trauma patients treated with sucralfate vs. ranitidine for stress ulcer prophylaxis. DESIGN:Prospective, randomized trial. SETTING:A 640-bed urban teaching hospital and trauma center. PATIENTS:Ninety-two...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00003246-199312000-00012
更新日期:1993-12-01 00:00:00
abstract:OBJECTIVES:Critically ill patients routinely receive vancomycin as empiric antibiotic therapy. A continuous infusion administration strategy may be superior to intermittent infusion by minimizing peak concentrations and variability thereby optimizing safety. We performed a systematic review and meta-analysis to investi...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000004326
更新日期:2020-06-01 00:00:00
abstract:OBJECTIVE:To review current knowledge about the impact of prolonged mechanical ventilation on diaphragmatic function and biology. MEASUREMENTS:Systematic literature review. CONCLUSIONS:Prolonged mechanical ventilation can promote diaphragmatic atrophy and contractile dysfunction. As few as 18 hrs of mechanical ventil...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0b013e3181b6e760
更新日期:2009-10-01 00:00:00
abstract::The intensive care unit (ICU) represents a hospital setting in which death and discussion about end-of-life care are common, yet these conversations are often difficult. Such difficulties arise, in part, because a family may be facing an unexpected poor prognosis associated with an acute illness or exacerbation and, i...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/00003246-200102001-00006
更新日期:2001-02-01 00:00:00
abstract:BACKGROUND:Septic shock represents the major cause of infection-associated mortality in the intensive care unit. The possibility that combination antibiotic therapy of bacterial septic shock improves outcome is controversial. Current guidelines do not recommend combination therapy except for the express purpose of broa...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0b013e3181eb3ccd
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVES:This report examines the frequency, type, and prognostic factors of medical (nonneurologic) complications after subarachnoid hemorrhage in a large, prospective study. The influences of contemporary neurosurgical, neurological, and critical care practice on mortality and morbidity rates after aneurysmal subar...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1097/00003246-199506000-00004
更新日期:1995-06-01 00:00:00
abstract::It has become accepted that nitric oxide serves important functions in biological systems as a second messenger. Another diatomic gaseous molecule, carbon monoxide (CO), is also rapidly gaining acceptance as a signaling agent. Some of the activities of CO are analogous to those of nitric oxide in the vascular system a...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:
更新日期:2001-01-01 00:00:00
abstract:OBJECTIVE:To determine the accuracy and reproducibility of four thermodilution indicators (5-mL room temperature, 10-mL room temperature, 5-mL iced, and 10-mL iced injectates) at clinically relevant flow rates. DESIGN:Quasi-experimental study. SETTING:Animal research laboratory of a health sciences university. SUBJE...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199304000-00021
更新日期:1993-04-01 00:00:00
abstract:OBJECTIVE:To assess protective and risk factors for mortality among pediatric patients during initial care after hematopoietic stem cell transplantation (HSCT) and to evaluate changes in hospital mortality. DESIGN:Retrospective cohort using the 1997, 2000, and 2003 Kids Inpatient Database, a probabilistic sample of ch...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0B013E318161FAC1
更新日期:2008-03-01 00:00:00
abstract:OBJECTIVES:To determine if vecuronium doses individualized by peripheral nerve stimulation are lower than those doses chosen by standard clinical techniques; and to determine whether patients monitored by peripheral nerve stimulation exhibit shorter recovery times and less prolonged neuromuscular blockade after discont...
journal_title:Critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00003246-199704000-00005
更新日期:1997-04-01 00:00:00
abstract::One hundred patients were ventilated with high-frequency jet ventilation (HFJV) during the initial 24-h postoperative period in the surgical and neurosurgical ICUs. Eighty-three were successfully weaned, 2 could not be ventilated adequately with HFJV, and 15 with criteria of acute respiratory failure received HFJV for...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198409000-00022
更新日期:1984-09-01 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:BACKGROUND:Acute lung injury (ALI) and its more severe form, acute respiratory distress syndrome (ARDS), are devastating disorders of overwhelming pulmonary inflammation and hypoxemia, resulting in high morbidity and mortality. AIM:To provide the clinician with a summary of the literature on the epidemiology, diagnosi...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0b013e3181aee5dd
更新日期:2009-08-01 00:00:00
abstract:OBJECTIVES:To understand when the use of high-frequency ventilation would be advantageous, we formulated the problem of achieving adequate alveolar ventilation at minimal pressure cost by dividing it into two simpler problems: a) the pressure cost per unit of convective oscillatory flow; and b) the convective flow cost...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/00003246-199422091-00004
更新日期:1994-09-01 00:00:00
abstract::The present trend in managed care has meant downsizing expectations concerning the availability of support for resuscitation research. This trend applies to funding possibilities from industry, governmental agencies, and nongovernmental agencies (Table 1). There will be increasing barriers to making innovations. Truth...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:
更新日期:1996-02-01 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:OBJECTIVES:Atrial fibrillation is frequently seen in sepsis-related hospitalizations. However, large-scale contemporary data from the United States comparing outcomes among sepsis-related hospitalizations with versus without atrial fibrillation are limited. The aim of our study was to assess the frequency of atrial fib...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000003806
更新日期:2019-08-01 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:BACKGROUND:Nutritional support is an essential component of the management of critically ill and injured ICU patients. Optimal provision of calories and protein has been demonstrated to reduce morbidity, mortally, and length of ICU and hospital stay. Yet, a large proportion of ICU patients receive inadequate nutrition....
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0000000000000051
更新日期:2014-04-01 00:00:00
abstract::Patient comfort is not assured by common practices for terminal extubation. Treatment guidelines suggest minimizing dosage of opioids and sedatives. Multiple lines of evidence indicate that clinicians are limited in their ability to recognize distress in such patients and tend to undermedicate patients in distress. Ye...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/CCM.0b013e318228235d
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVES:Chronic subdural hematoma is a commonly encountered disease in neurosurgic practice, whereas its increasing prevalence is compatible with the ageing population. Recommendations concerning postoperative thrombosis prophylaxis after burr-hole drainage of chronic subdural hematoma are lacking. The aim of this s...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000002804
更新日期:2018-01-01 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::The fractional elimination rate of exogenous fat, and fat-mobilizing lipolysis in relation to plasma catecholamine (CA) levels were studied in seven ventilator-treated ICU patients. Blood levels of CA, triglycerides, cholesterol and free fatty acids (FFA) were also analyzed before and during constant infusion of a soy...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198411000-00006
更新日期:1984-11-01 00:00:00