VRE was associated with prior antibiotic use, multiple abdominal surgeries, biliary complications and resulted in decreased survival compared to non-VRE control patients. VRE patients also utilized more hospital resources. Linezolid showed a trend toward improved survival.
The survey indicates that many solid organ transplant centres have incorporated transplant pharmacists into the multidisciplinary transplant clinical team. Transplant pharmacists are funded most often by the hospital pharmacy. Most transplant pharmacists spend the majority of their time in clinical practice, but also play a key role in research.
Overall, there was a general tolerability with a low incidence of adverse events, no incidence of severe complications, and no alterations in liver function tests in the study population with the use of LLA.
Length of stay is the most important determinant of costs after OLTx. Rational strategies to design cost-effective protocols after OLTx will require further studies to truly define the cost of various morbidities and outcomes after OLTx.
The introduction of cyclosporin significantly improved solid organ transplantation outcomes. However, the costs associated with immunosuppressive therapy increased from approximately $US1000 to $US2000 per patient per year with azathioprine (AZA) and prednisone to $US5000 to $US8000 per patient per year with the addition of cyclosporin (1997 values). Because of the financial demands placed on medical care in the current era, research has been directed towards developing drug combinations which potentiate the therapeutic effect of cyclosporin whereby reducing the amount of drug administered and consequently the costs of long term immunosuppressive therapy. To date, many drugs that interact with cyclosporin have been recognised. Included in this list are the azole antifungal drugs, ketoconazole, fluconazole and itraconazole; the calcium channel blockers, diltiazem, verapamil and nicardipine; and the macrolide antibacterials, erythromycin and related compounds. Although all of these drugs increase cyclosporin drug concentrations when used concomitantly, ketoconazole and diltiazem appear to be the best candidates on the basis of reducing financial pressures of chronic immunosuppressive therapy without sacrificing patients' well-being. Studies of various regimens involving the combined use of ketoconazole and cyclosporin have shown that cyclosporin dosages can be reduced by approximately 70 to 85% while maintaining therapeutic blood concentrations in renal, cardiac and liver transplant recipients. The calcium channel blocker, diltiazem, allows a decrease in cyclosporin dosage by approximately 30 to 50% in this same group of organ transplant patients. These reductions in cyclosporin dosage have been achieved with no reported severe adverse effects that would discourage the use of these agents concurrently in practice. The combined use of cyclosporin and ketoconazole or diltiazem could reduce medication costs by approximately $US915 to $US3000 per year per patient. If all patients treated with cyclosporin are considered, these combinations could reduce medication costs by hundreds of millions of dollars per year in the US alone. While these are promising approaches, further characterisation of these drug interactions is necessary before this practice is adopted as standard protocol worldwide. The objective of this paper is to review the clinical and economic potential of cyclosporin-sparing agents such as the azole antifungal drugs and calcium channel blockers in an attempt to decrease the costs associated with this expensive immunosuppressive agent.
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