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March 10, 2005 Vol. 352 No. 10
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Hospitalized patients may be at risk for venous thromboembolism as a result of bed rest, cancer, or major surgery, yet not all such patients receive prophylaxis against deep-vein thrombosis. An electronic alert system, which prompted physicians to prescribe prophylaxis to patients at risk for deep-vein thrombosis, was determined not only to increase the use of prophylactic measures but also to reduce the risk of venous thromboembolism.
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Most patients with glioblastoma multiforme, the most common primary malignant brain tumor in adults, die within two years of the diagnosis, despite surgery and radiotherapy. This trial compared postoperative radiotherapy with postoperative radiotherapy plus temozolomide, an alkylating agent. The combined treatment was safe and reduced the risk of death by 37 percent.
In this companion to the randomized trial of temozolomide in glioblastoma, also reported in this issue of the Journal, the methylation status of the promoter of the MGMT (O6-methylguanine–DNA methyltransferase) DNA-repair gene in glioblastoma was determined. Methylation of the promoter silences the gene and thereby inhibits the repair of DNA damaged by temozolomide. Patients with a tumor that contained a methylated MGMT promoter benefited more from the drug than patients whose tumor contained an unmethylated MGMT promoter.
A 23-year-old nurse presents for evaluation after having five episodes of syncope at work during the previous three months. All the episodes occurred while she was standing and were characterized by a feeling of light-headedness lasting one to two seconds and then an abrupt loss of consciousness. Two of the episodes caused falls that resulted in facial trauma. The syncope was brief and not associated with incontinence; it was followed by severe fatigue but no confusion. How should the patient be evaluated and treated?
New therapeutic strategies have emerged along with our understanding that disturbances of iron homeostasis, impaired proliferation of erythroid progenitor cells, and blunted erythropoietin response occur in anemia of chronic disease. This review discusses advances in our knowledge of the causes and management of the condition.
A 59-year-old woman was incidentally found to have an adrenal cortical nodule on abdominal computed tomography for evaluation of a colovesical fistula. Two years earlier, she had been found to have mild hypertension, which proved difficult to control with antihypertensive medication. She was slightly obese. How should she be evaluated?
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