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Drug-eluting stents (DES) represent an innovative application of pharmaceutical technology that has piqued the interest of hospital and managed care decision-makers. Since their introduction to the US market in 2004, the sirolimus- and paclitaxel-eluting stents have featured drugs employing different mechanisms of action to reduce the risk of restenosis following percutaneous coronary intervention (PCI) in an attempt to improve cardiovascular outcomes.

Despite the variety of medications available to treat type 2 diabetes, the disease is inadequately controlled in many patients. In order to improve glycemic control, manufacturers are pursuing compounds that affect the incretin hormones that stimulate insulin release in response to increased glucose levels. Although stimulation of the incretin receptors by the glucagon-like peptide-1 (GLP-1) enhances the body's ability to produce insulin in response to elevated blood glucose concentrations, the clinical usefulness of GLP-1 is limited by its rapid degradation by dipeptidyl peptidase-IV (DPP-IV). Drug companies have developed compounds intended to act as inhibitors of DPP-IV. Vildagliptin (Galvus, Novartis) is the second DPP-IV inhibitor under investigation by FDA to offer this new mechanism to achieve glycemic control. An NDA for vildagliptin was submitted to FDA in March 2006, 1 month after the submission of the first DPP-IV inhibitor, sitagliptin.

Dalteparin (Fragmin, Pfizer) for the extended treatment of symptomatic venous thromboembolism (proximal deep vein thrombosis and/or pulmonary embolus) to prevent recurrent venous thromboembolism in patients with cancer

Levetiracetam

Antiepileptic approved in an injectable formulation

Posaconazole

First antifungal approved for prevention of invasive fungal infections caused by Aspergillus species

A drug use evaluation at Wake Forest University Baptist Medical Center (WFUBMC) was initiated following a change in institution-approved guidelines for the administration of amphotericin B lipid complex injection (ABLC) (Abelcet, Enzon). This study was conducted to determine compliance with the new guidelines among prescribers and to characterize the population of patients receiving ABLC. A total of 153 patients received ABLC from April 2001 through December 2002. One hundred thirty-three patients (87%) met 1 or more of the institutional criteria for ABLC administration and 20 (13%) receiving ABLC did not meet the guidelines. The mean baseline serum creatinine (SCr) value among patients meeting institutional guidelines (n=133) was 2.0 mg/dL (range, 0.5–5.0 mg/dL). Among patients who did not meet the guidelines (n=20), the mean baseline SCr level was 1.7 mg/dL (range, 0.6–2.9 mg/dL). The use of new guidelines, which were less stringent than previous guidelines, resulted in earlier administration..

This study evaluates the appropriateness and cost implications of using epoetin alpha for transfusion reduction in Hartford Hospital's (Hartford, Conn) intensive care units (ICUs), with the goal of implementing a protocol for use in this setting. We conducted a literature review to determine the efficacy, safety, and clinical outcomes of epoetin alpha for transfusion reduction in the ICU. We also evaluated the safety and supply of red blood cell (RBC) transfusions and the cost considerations of epoetin alpha. The literature review demonstrated that epoetin alpha can reduce blood transfusions in the ICU setting but its use provided no difference in mortality or any other clinical outcome. Our epoetin alpha expenditure for transfusion reduction was $112,067 annually to theoretically save $14,349 in blood transfusion costs. The pharmacy and therapeutics (P&T) committee subsequently recommended that epoetin alpha not be used for transfusion reduction in the ICUs and requested that a drug use evaluation (DUE) be performed to monitor compliance, adverse effects, and cost avoidance. One year after implementation of the epoetin alpha DUE program, the compliance rate was >90%, there were no reported adverse events with blood transfusions or problems with blood supply, and a cost avoidance of $104,562 was realized. (Formulary. 2006;41:442?449.)

FDA issued a proposed rule late last month that would allow pharmaceutical manufacturers to register and list products electronically in an effort to minimize the paper-based element of the process, allowing the agency to host a comprehensive national database of medications and to be more flexible in its role of monitoring the safety of medications for sale, according to officials.

Intravenous (IV) moxifloxacin followed by oral (PO) moxifloxacin, both dosed once-daily, is at least as effective in the treatment of complicated intra-abdominal infections (cIAIs) as piperacillin-tazobactam and amoxicillin-clavulanate comparator regimens dosed multiple times per day, researchers reported in the Annals of Surgery.

The selective estrogen-receptor modulator (SERM) raloxifene reduces the risks of invasive breast cancer and vertebral fracture in postmenopausal women but also increases the risks of venous thromboembolism and fatal stroke, a study in the New England Journal of Medicine (NEJM) concluded.

Raloxifene, a second-generation selective estrogen receptor modulator (SERM) approved to treat osteoporosis, fared as effectively against breast cancer as tamoxifen in 2 related comparison studies published in the Journal of the American Medical Association (JAMA).

A drug use evaluation at Wake Forest University Baptist Medical Center (WFUBMC) was initiated following a change in institution-approved guidelines for the administration of amphotericin B lipid complex injection (ABLC) (Abelcet, Enzon). This study was conducted to determine compliance with the new guidelines among prescribers and to characterize the population of patients receiving ABLC. A total of 153 patients received ABLC from April 2001 through December 2002. One hundred thirty-three patients (87%) met 1 or more of the institutional criteria for ABLC administration and 20 (13%) receiving ABLC did not meet the guidelines. The mean baseline serum creatinine (SCr) value among patients meeting institutional guidelines (n=133) was 2.0 mg/dL (range, 0.5–5.0 mg/dL). Among patients who did not meet the guidelines (n=20), the mean baseline SCr level was 1.7 mg/dL (range, 0.6–2.9 mg/dL). The use of new guidelines, which were less stringent than previous guidelines, resulted in earlier administration..

A variety of clinical approaches are utilized in the management of poor glycemic control in patients with type 2 diabetes. Sitagliptin (Januvia, Merck), a novel drug in a new medication class known as dipeptidyl peptidase-IV (DPP-IV) inhibitors, offers a new mechanism by which to achieve glycemic control. Although stimulation of receptors by the glucagon-like peptide-1 (GLP-1) enhances the body's ability to produce insulin in response to elevated blood glucose concentrations, rapid degradation of GLP-1 by DPP-IV limits its clinical effectiveness. The development of medications to reduce this degradation is being pursued by numerous manufacturers. An NDA for the first of these medications, sitagliptin, was submitted to FDA in February 2006. Currently available clinical studies have demonstrated improved glycemic control with sitagliptin therapy in patients who have not achieved target glucose levels with diet and oral medications. (Formulary. 2006;41:434–441.)

Medication safety in brief

The labeling for dextroamphetamine (Dexedrine, GlaxoSmithKline) was revised to include new warnings. The warnings describe reports of sudden death in association with CNS stimulant treatment at usual doses in children and adolescents with structural cardiac abnormalities or other serious heart problems.

Approvable designations; Priority review; Fast-track designations; Orphan drug designations; Nonapprovable designations

FDA actions in brief

Budesonide/formoterol (Symbicort, AstraZeneca) was approved as maintenance therapy for asthma in patients aged 12 years and older.

Duetact

The combination of pioglitazone and glimepiride was approved on July 28, 2006, as an adjunct to diet and exercise as a once-daily combination therapy to improve glycemic control in patients with type 2 diabetes who are already treated with a combination of pioglitazone and a sulfonylurea or whose diabetes is not adequately controlled with a sulfonylurea alone, or for those patients who have initially responded to pioglitazone alone and require additional glycemic control.

Famvir

A prodrug of penciclovir, famciclovir is ultimately phosphorylated by the viral thymidine kinase and subsequently cellular kinases to a penciclovir triphosphate, which inhibits herpes simplex 2 (HSV-2) DNA polymerase in a competitive manner.