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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 39 (1990), S. 457-461 
    ISSN: 1432-1041
    Keywords: Vancomycin ; drug utilization ; drug usage evaluation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A prospective, two-phase, drug utilization review (DUR) was performed at the Royal Adelaide Hospital (RAH) to determine the extent and pattern of vancomycin use. For all patients commencing oral or parenteral vancomycin, treatment indication, route of administration, duration of therapy, results of culture and sensitivity tests, adverse drug reactions and results of therapeutic drug level monitoring were recorded. Vancomycin courses were classified as being for therapy or prophylaxis and compared with predetermined audit criteria to assess appropriateness of use. During the 8 week initial phase, data on 62 treatment courses in 59 patients were recorded, 50% for therapy and 50% for prophylaxis. Sixty four percent were classified as inappropriate, occurring in 32% of therapeutic courses and 97% of those for prophylaxis. During the 10 week re-evaluation, conducted 10 months later, data for 43 treatment courses in 43 patients were reviewed, 42% for therapy and 58% for prophylaxis. Sixty five percent were inappropriate occuring in 17% of therapeutic courses and 100% of the prophylactic courses. When compared with the initial phase, the re-evaluation demonstrated a decrease in the empirical use of vancomycin in the combination treatment of neutropaenic fever and also in the duration of vancomycin use for surgical prophylaxis. During both study phases, criteria contraventions were mostly due to inappropriate indication or duration of therapy. The cost of inappropriate vancomycin use was reduced by over 50% between survey phases, from $Aus11,500 or 55% of total vancomycin cost during the initial phase to $Aus3,600 or 25.7% during the re-evaluation. The most effective of the remedial strategies implemented after the initial phase was direct consultation with prescriber groups. The effectiveness of this DUR has provided the basis for an ongoing DUR programme at the RAH which has been met with general acceptance by hospital clinicians and administrators.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of statistical physics 77 (1994), S. 449-472 
    ISSN: 1572-9613
    Keywords: Virial theorem ; pressure ; periodic boundary conditions ; computer simulations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Because it is not immediately clear how to write down a proper Hamiltonian for a system in periodic boundary conditions, particularly with Coulombic interactions, we consider a large, finite array of copies of a basic simulation cell containingN particles with some interaction between them. We also putN independent copy particles in each of the copy cells of the array and write down a constrained Lagrangian for the whole system. Constraints on the velocities of the particles of the whole array together with an appropriate initial condition implement the periodic structure in the cells of the array of copies. We derive a Hamiltonian for the whole system with constraints and then derive the equations of motion and a virial expression for the pressure tensor in terms of the forces on the system. In the limit as the array of cell copies becomes large, the equations of motion become the standard ones used in periodic-boundaryconditions simulations. The method also provides an unequivocal algorithm for the pressure in this limit in terms of a virial expression. Particular attention is paid to the case of Coulombic interactions.
    Type of Medium: Electronic Resource
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