Journal of critical care
-
Journal of critical care · Aug 2011
Comparative StudyDynamic response of liquid-filled catheter systems for measurement of blood pressure: precision of measurements and reliability of the Pressure Recording Analytical Method with different disposable systems.
We aimed to compare the effects of a blood pressure transducer system specifically manufactured to limit underdamping artifacts with those of a standard system on hemodynamic parameter estimation and accuracy. ⋯ Underdamping/resonance artifacts frequently affect blood pressure measurement in operating rooms and intensive care units and cause severe overestimation of systolic blood pressure and incorrect estimation of hemodynamic parameters when the pulse contour method is used.
-
Journal of critical care · Aug 2011
Patient factors associated with transfusion practices in Veterans Affairs intensive care units: implications for further research.
We sought to describe how patient characteristics influence the frequency of red blood cell (RBC) transfusions among critically ill patients after taking into account hemoglobin (Hgb) level. ⋯ Intensive care unit patients admitted for AMI, unstable angina, and congestive heart-failure had higher likelihood of receiving RBC transfusions below specific Hgb levels varying from 6 to 11 g/dL. Further research is needed to determine how these transfusion practices influence outcomes.
-
Journal of critical care · Aug 2011
Correlation between coagulopathy and outcome in severe head trauma in neurointensive care and trauma units.
Abnormal blood coagulation after traumatic brain injury is a common finding. Some studies have proposed these changes as useful predictors of outcome in patients with head trauma. This study aimed at evaluating the association of the routine tests of blood coagulation within the first hours after severe head trauma with prognosis of patients with severe head trauma. ⋯ On-admission PT, PTT, INR and platelet count may be used as predictors of outcome and prognosis of patients with severe head trauma.
-
Journal of critical care · Aug 2011
Herpes simplex virus: a marker of severity in bacterial ventilator-associated pneumonia.
Ventilator-associated pneumonia (VAP) is the most frequent nosocomial infection in intensive care units and has a high morbidity and mortality rate. It is mainly a bacterial disease, although the potential role of viruses as pathogens or copathogens in VAP is under discussion. Our study aims were to determine the incidence of herpes simplex virus (HSV) in the lower respiratory tract (LRT) secretions in patients with bacterial VAP and to assess its potential clinical relevance. ⋯ Herpes simplex virus excretion in LRT secretions is not infrequent in VAP, and it is associated with greater severity and worse prognosis.
-
Journal of critical care · Aug 2011
Bacteremia in Staphylococcus aureus pneumonia: outcomes and epidemiology.
Staphylococcus aureus represents a major cause of pneumonia in critically ill patients. Although bacteremia may complicate S aureus pneumonia, the epidemiology of and outcomes associated with bacteremia in this syndrome are poorly described. ⋯ Bacteremia often arises in S aureus pneumonia and is associated with both increased morbidity and mortality. Several simple clinical factors to determine clinical features identify patients with S aureus pneumonia likely to have simultaneous bacteremia.