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  • 1
    ISSN: 1432-1238
    Keywords: Key words Mechanical ventilation ; Endotracheal intubation ; Unplanned ; extubation ; Self-extubation ; Intensive care unit ; Quality ; improvement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To evaluate the effectiveness of a continuous quality improvement (CQI) program in reducing the incidence of unplanned endotracheal extubation. Design: Prospective study over a 9-month period. Setting: Adult intensive care units (ICUs including coronary care unit, medical ICU, surgical ICU, and cardiovascular surgical ICU) in a university-affiliated medical center. Patients: 831 consecutive mechanically ventilated patients. Interventions: CQI program focusing on standardization of procedures, improvement of communication, and identification and management of high-risk patients. Measurements and results: With the implementation of this CQI program, the overall incidence density of unplanned extubation (defined as number of new unplanned extubations per mechanical ventilation patient-days) significantly decreased from 2.6% in the first trimester to 1.5% in the second trimester and 1.2% in the third trimester (p=0.01). This reduction was essentially the result of a decrease in unplanned extubation in orally intubated patients (incidence density 4.6, 1.7 and 1.0% for three trimesters, respectively; p〈0.0001). Unplanned extubation in nasally intubated patients remained largely unaffected (1.2, 1.4, and 1.4% for three trimesters, respectively; p=0.92). Conclusions: The implementation of a concerted CQI program is effective in reducing the overall incidence of unplanned endotracheal extubation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of scientific computing 12 (1997), S. 139-167 
    ISSN: 1573-7691
    Keywords: Combustion ; numerical simulation ; opposed jet flames ; porous particle combustion ; splitting method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract A new formulation for the numerical solution of low Mach number compressible flow problems is presented and analyzed. In this formulation the thermal part (energy and species equations) is solved implicitly and decoupled from the momentum equation, whereas the hydrodynamic part (momentum-continuity) is advanced in time using a high order splitting approach which results in overall high order accuracy in time and minimal errors in mass conservation. These errors are analyzed using both analytical tools and benchmark numerical examples. Results from two-dimensional simulations with one-step global reaction in opposed jet flame and porous particle configurations are also presented.
    Type of Medium: Electronic Resource
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