Items in AFP with MESH term: Drug Interactions

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Treating Diabetic Peripheral Neuropathic Pain - Article

ABSTRACT: Diabetic peripheral neuropathic pain affects the functionality, mood, and sleep patterns of approximately 10 to 20 percent of patients with diabetes mellitus. Treatment goals include restoring function and improving pain control. Patients can realistically expect a 30 to 50 percent reduction in discomfort with improved functionality. The main classes of agents used to treat diabetic peripheral neuropathic pain include tricyclic antidepressants, anticonvulsants, serotonin-norepinephrine reuptake inhibitors, opiates and opiate-like substances, and topical medications. Physicians should ask patients whether they have tried complementary and alternative medicine therapies for their pain. Only two medications are approved specifically for the treatment of diabetic peripheral neuropathic pain: pregabalin and duloxetine. However, evidence supports the use of other therapies, and unless there are contraindications, tricyclic antidepressants are the first-line treatment. Because patients often have multiple comorbidities, physicians must consider potential adverse effects and possible drug interactions before prescribing a medication.

Cytochrome P450: New Nomenclature and Clinical Implications - Article

ABSTRACT: Many drug interactions are a result of inhibition or induction of cytochrome P450 enzymes (CYP450). The CYP3A subfamily is involved in many clinically significant drug interactions, including those involving nonsedating antihistamines and cisapride, that may result in cardiac dysrhythmias. CYP3A4 and CYP1A2 enzymes are involved in drug interactions involving theophylline. CYP2D6 is responsible for the metabolism of many psychotherapeutic agents. The protease inhibitors, which are used to treat patients infected with the human immunodeficiency virus, are metabolized by the CYP450 enzymes and consequently interact with a multitude of other medications. By understanding the unique functions and characteristics of these enzymes, physicians may better anticipate and manage drug interactions and may predict or explain an individual's response to a particular therapeutic regimen.

Avoiding Drug Interactions - Editorials

Clinical Briefs - Clinical Briefs

Reducing Adverse Effects of Proton Pump Inhibitors - Article

ABSTRACT: Proton pump inhibitors effectively treat gastroesophageal reflux disease, erosive esophagitis, duodenal ulcers, and pathologic hypersecretory conditions. Proton pump inhibitors cause few adverse effects with short-term use; however, long-term use has been scrutinized for appropriateness, drug-drug interactions, and the potential for adverse effects (e.g., hip fractures, cardiac events, iron deficiency, Clostridium difficile infection, pneumonia). Adults 65 years and older are more vulnerable to these adverse effects because of the higher prevalence of chronic diseases in this population. Proton pump inhibitors administered for stress ulcer prophylaxis should be discontinued after the patient is discharged from the intensive care unit unless other indications exist.

Updated Guidelines on Outpatient Anticoagulation - Article

ABSTRACT: The American College of Chest Physicians provides recommendations for the use of anticoagulant medications for several indications that are important in the primary care setting. Warfarin, a vitamin K antagonist, is recommended for the treatment of venous thromboembolism and for the prevention of stroke in persons with atrial fibrillation, atrial flutter, or valvular heart disease. When warfarin therapy is initiated for venous thromboembolism, it should be given the first day, along with a heparin product or fondaparinux. The heparin product or fondaparinux should be continued for at least five days and until the patient’s international normalized ratio is at least 2.0 for two consecutive days. The international normalized ratio goal and duration of treatment with warfarin vary depending on indication and risk. Warfarin therapy should be stopped five days before major surgery and restarted 12 to 24 hours postoperatively. Bridging with low-molecular-weight heparin or other agents is based on balancing the risk of thromboembolism with the risk of bleeding. Increasingly, self-testing is an option for selected patients on warfarin therapy. The ninth edition of the American College of Chest Physicians guidelines, published in 2012, includes a discussion of anticoagulants that have gained approval from the U.S. Food and Drug Administration since publication of the eighth edition in 2008. Dabigatran and apixaban are indicated for the prevention of systemic embolism and stroke in persons with nonvalvular atrial fibrillation. Rivaroxaban is indicated for the prevention of deep venous thrombosis in patients undergoing knee or hip replacement surgery, for treatment of deep venous thrombosis and pulmonary embolism, for reducing the risk of recurrent deep venous thrombosis and pulmonary embolism after initial treatment, and for prevention of systemic embolism in patients with nonvalvular atrial fibrillation.

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