Abstract:
OBJECTIVE:This study was done to assess the effects of temperature on bleeding time and clotting time in normal male and female volunteers. DESIGN:Open study utilizing normal volunteers. SETTING:University research laboratory. SUBJECTS:Fifty-four healthy male and female volunteers, ranging in age from 19 to 35 yrs, who were not receiving medications. The study was done and the samples of venous blood and shed blood collected at the template bleeding time site were obtained at a convenient time for each volunteer. INTERVENTIONS:Skin temperature was changed from +20 degrees to +38 degrees C and blood samples were obtained from the antecubital vein of each volunteer. MEASUREMENTS AND MAIN RESULTS:The effect of local skin temperature ranging from +20 degrees to +38 degrees C on bleeding time was evaluated in 38 normal volunteers (19 male and 19 female). Skin temperature was maintained at +20 degrees to +38 degrees C by cooling or warming the forearm. At each temperature, measurements were made of complete blood count, bleeding time, and thromboxane B2 concentrations in shed blood collected at the template bleeding time site and in serum and plasma isolated from blood collected from the antecubital vein. Clotting time studies were measured in 16 normal volunteers (eight male and eight female) at temperatures ranging from +22 degrees to +37 degrees C. At +32 degrees C, the bleeding time was longer and hematocrit was lower in female than in male volunteers. However, at local skin temperatures of < +32 degrees C, both the males and females exhibited significantly increased bleeding times, which were associated with a reduction in shed blood thromboxane B2. Each 1 degree C decrease in temperature was associated with a 15% decrease in the shed blood thromboxane B2 concentration. Clotting times were three times longer at +22 degrees C than at +37 degrees C. Each 1 degree C reduction in the temperature of the clotted blood was associated with a 15% reduction in the serum thromboxane B2 concentration. CONCLUSION:Our data indicate that during surgical procedures, it is important to maintain normothermia to ensure that platelets and clotting proteins function optimally.
journal_name
Crit Care Medjournal_title
Critical care medicineauthors
Valeri CR,MacGregor H,Cassidy G,Tinney R,Pompei Fdoi
10.1097/00003246-199504000-00019subject
Has Abstractpub_date
1995-04-01 00:00:00pages
698-704issue
4eissn
0090-3493issn
1530-0293journal_volume
23pub_type
杂志文章abstract:OBJECTIVE:To discuss the potential therapeutic value of intraluminal oxygenation of the gut in critical illness. DATA SOURCES:Relevant articles published in the English language literature. STUDY SELECTION:No special study has been carried out for the present presentation. DATA EXTRACTION:Information from the litera...
journal_title:Critical care medicine
pub_type: 杂志文章,评审
doi:10.1097/00003246-199302001-00012
更新日期:1993-02-01 00:00:00
abstract:OBJECTIVE:To determine the effect of a bolus infusion of diaspirin cross-linked hemoglobin (DCLHb or hemoglobin crosfumaril) on the ileal mucosal microcirculation in septic rats. DESIGN:Prospective, randomized, single-blinded study. SETTING:University-affiliated animal research laboratory. SUBJECTS:Twenty-four male ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200003000-00029
更新日期:2000-03-01 00:00:00
abstract:OBJECTIVE:To determine the limits of agreement between the cardiac output and volumetric data estimated by impedance cardiography with the cardiac output determined by thermodilution and the left ventricular ejection fraction and end-diastolic volume estimated from left ventriculography. DESIGN:A prospective study. S...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199709000-00023
更新日期:1997-09-01 00:00:00
abstract:OBJECTIVES:The results from the recent Targeted Temperature Management trial raised the question whether cooling or merely the avoidance of fever mediates better neurologic outcome in resuscitated patients. As temperature per se is a major determinant of cardiac function, we characterized the effects of hyperthermia (4...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000001358
更新日期:2016-03-01 00:00:00
abstract::We evaluated 95 extubated neonates to determine if certain risk factors could predict the development of laryngeal injury. Risk factors were recorded prospectively during the intubation period and correlated with laryngeal injury determined by laryngoscopy after extubation. Duration of intubation greater than or equal...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198306000-00007
更新日期:1983-06-01 00:00:00
abstract:OBJECTIVE:To examine the frequency with which quality of life and treatment limitation were discussed in formal family meetings for long-stay intensive care unit patients with high risk for mortality and morbidity. DESIGN:Descriptive observational study. SETTING:Five intensive care units. PATIENTS:One hundred sixtee...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e318232d8c4
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVE:To determine the influence of a selective, sterile central nervous system surgery on immune reactivity, particularly whether a decrease of monocytic human leukocyte antigen-DR expression, indicating immunodepression, occurs after neurosurgery and if this measurement is useful for identification of patients wi...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199512000-00006
更新日期:1995-12-01 00:00:00
abstract:OBJECTIVES:Less than half of the thousands of children who suffer in-hospital cardiac arrests annually survive, and neurologic injury is common among survivors. Hemodynamic-directed cardiopulmonary resuscitation improves short-term survival, but its impact on longer term survival and mitochondrial respiration-a potenti...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000003620
更新日期:2019-03-01 00:00:00
abstract:OBJECTIVE:To define the occurrence rate of acute respiratory distress syndrome (ARDS) using established criteria in a well-defined general patient population, to study the clinical course of ARDS when patients were ventilated using a "lung-protective" strategy, and to define the total costs of care. DESIGN:A 3-yr (199...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199911000-00008
更新日期:1999-11-01 00:00:00
abstract:OBJECTIVE:To determine how top loads with different doses of carbon monoxide (CO)-saturated saline solutions (CO-saline) affect microvascular and systemic hemodynamics and to delineate the corresponding biochemical mechanisms. DESIGN:Prospective study. SETTING:University research laboratory. SUBJECTS:Male Golden Syr...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000259533.84180.C7
更新日期:2007-04-01 00:00:00
abstract:OBJECTIVE:To determine prevalence, risk factors, and outcome of thrombocytopenia in medical intensive care patients. DESIGN:Prospective observational study. SETTING:The 12-bed medical intensive care unit of a university hospital. PATIENTS:All consecutively admitted patients with normal platelet count at admission an...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-200208000-00015
更新日期:2002-08-01 00:00:00
abstract:OBJECTIVE:The administration of vasopressin during cardiopulmonary resuscitation (CPR) provides significantly more vital organ blood flow when compared with epinephrine during cardiac arrest in pigs. The effects of this potent vasoconstrictor on postresuscitation cardiovascular function remain unknown. The purpose of t...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199612000-00014
更新日期:1996-12-01 00:00:00
abstract:OBJECTIVE:To investigate the interaction and involvement of hydrogen sulfide and transient receptor potential vanilloid type 1 in the pathogenesis of sepsis. Hydrogen sulfide has been demonstrated to be involved in many inflammatory states including sepsis. Its contribution in neurogenic inflammation has been suggested...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e3181c0df00
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVES:Evaluate clinicians' sentiments about participating in cardiac arrest resuscitations and identify factors associated with confidence in resuscitation of cardiac arrest. DESIGN:Electronic survey. SETTING:Twenty-one hospitals in Utah and Idaho. SUBJECTS:All attending physicians, residents, and nurses in a m...
journal_title:Critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1097/CCM.0000000000003612
更新日期:2019-03-01 00:00:00
abstract:OBJECTIVE:Although it is established that septic shock induces immunosuppression, the mechanisms for this phenomenon remain poorly understood. Human leukocyte antigen-G exerts strong inhibitory effects that are directed at different arms of the immune system. The main objective of the current study was to measure human...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000277039.84372.1C
更新日期:2007-08-01 00:00:00
abstract:OBJECTIVE:A comparison of federal Medicare databases to identify critical care medicine (CCM) use, cost discrepancies, and their possible causes. DESIGN:A 6-yr (1995-2000) retrospective analysis of Medicare hospital and CCM use and cost, comparing the Hospital Cost Report Information System (HCRIS) with Medicare Provi...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000257255.57899.5D
更新日期:2007-03-01 00:00:00
abstract::To achieve normocarbia during conventional mechanical ventilation, ventilator settings are determined initially on the basis of body weight. The best ventilator settings for CO2 elimination during high-frequency jet ventilation (HFJV) have not been so clearly defined. A recent study has suggested that eucarbia will be...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198801000-00012
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVES:With decreasing mortality in PICUs, a growing number of survivors experience long-lasting physical impairments. Early physical rehabilitation and mobilization during critical illness are safe and feasible, but little is known about the prevalence in PICUs. We aimed to evaluate the prevalence of rehabilitatio...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000004291
更新日期:2020-05-01 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::Cessation of massive hemoptysis after iatrogenic balloon catheter rupture of the pulmonary artery was observed after a 2-ml inflation of the balloon. A wedge angiogram showed a small cavity near the rupture. Secondary lobectomy was performed; however, the patient died 1 month later. Therapeutic approaches of this life...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198703000-00021
更新日期:1987-03-01 00:00:00
abstract:OBJECTIVE:Traumatic brain injury contributes to morbidity and mortality in children and boys are disproportionately represented. Hypotension is common and worsens outcome after traumatic brain injury. Extracellular signal-related kinase mitogen-activated protein kinase is upregulated and reduces cerebral blood flow aft...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0b013e3181e8ac1a
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVE:To evaluate the effect of spontaneous gasping on cardiorespiratory functions and the ability to resuscitate during experimental cardiac arrest. DATA SOURCES:Studies in rat and pig models during cardiac arrest and cardiopulmonary resuscitation (CPR). STUDY SELECTION:We retrospectively examined the role of sp...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199405000-00027
更新日期:1994-05-01 00:00:00
abstract:OBJECTIVE:To evaluate the cardiopulmonary effects of the novel endothelin receptor antagonist tezosentan in endotoxin-induced lung injury in sheep and to assess the dose response to tezosentan and endothelin-1 in healthy sheep. DESIGN:Prospective, randomized, controlled experimental study. SETTING:University animal l...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000114575.08269.f6
更新日期:2004-03-01 00:00:00
abstract:OBJECTIVE:To determine the pharmacokinetics of fentanyl when used as a long-term continuous infusion for sedation/analgesia in mechanically ventilated critically ill infants and children. DESIGN:Prospective, case series. SETTING:A university hospital pediatric intensive care unit (ICU). PATIENTS:Nineteen mechanicall...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-199307000-00012
更新日期:1993-07-01 00:00:00
abstract:OBJECTIVES:We have previously shown that remote ischemic preconditioning reduces acute kidney injury (acute kidney injury) in high-risk patients undergoing cardiopulmonary bypass and that the protective effect is confined to patients who exhibit an increased urinary tissue inhibitor of metalloproteinases-2 and insulin-...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/CCM.0000000000004415
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVE:To determine whether clinically relevant airspace concentrations of beta2-adrenergic agonists stimulated maximal alveolar fluid clearance rates and to determine whether beta2 agonist therapy decreased pulmonary edema in experimental acute lung injury. DESIGN:Prospective randomized laboratory investigation. ...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.ccm.0000129489.34416.0e
更新日期:2004-07-01 00:00:00
abstract:OBJECTIVE:Pressure inflating the lung during mechanical ventilation is the difference between pressure applied at the airway opening (Pao) and pleural pressure (Ppl). Depending on the chest wall's contribution to respiratory mechanics, a given positive end-expiratory and/or end-inspiratory plateau pressure may be appro...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/01.CCM.0000215515.49001.A2
更新日期:2006-05-01 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::Arterial oxygen saturation, determined noninvasively by pulse oximetry in 32 pediatric patients with cyanotic congenital heart disease (CHD), was compared with oxygen saturation measured by a cooximeter in simultaneously obtained arterial blood samples. The patients were studied in the cardiac catheterization laborato...
journal_title:Critical care medicine
pub_type: 杂志文章
doi:10.1097/00003246-198711000-00015
更新日期:1987-11-01 00:00:00
abstract:OBJECTIVE:To identify factors associated with granting or refusing intensive care unit (ICU) admission, to analyze ICU characteristics and triage decisions, and to describe mortality in admitted and refused patients. DESIGN:Observational, prospective, multiple-center study. SETTING:Four university hospitals and seven...
journal_title:Critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1097/01.ccm.0000157752.26180.f1
更新日期:2005-04-01 00:00:00