Cochrane Db Syst Rev
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Cochrane Db Syst Rev · Jan 2000
ReviewDuration of treatment with vitamin K antagonists in symptomatic venous thromboembolism.
Currently the most frequently used secondary treatment for patients with venous thromboembolism are vitamin K antagonists targeted at an INR of 2.5 (range 2.0 - 3.0). However, based on the continuing risk of bleeding and uncertainty regarding the risk of recurrent venous thromboembolism, there is discussion on the proper duration of treatment with vitamin K antagonists for these patients. Recently, several studies were published in which the risk and benefits of different durations of oral anticoagulants were compared in patients with venous thromboembolism. ⋯ In conclusion this meta-analysis shows that treatment with vitamin K antagonists reduces the risk of recurrent venous thromboembolism as long as it is used. However, the absolute risk of recurrent venous thromboembolism declines over time, while the risk for major bleeding remains. Thus, the efficiency of vitamin K antagonist administration decreases over time since the index event.
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Cochrane Db Syst Rev · Jan 2000
ReviewChest radiograph in acute respiratory infections in children.
Chest radiography is widely used in acute lower respiratory infection in children, but the benefits are unknown. ⋯ There is no evidence that chest radiography improves outcome in ambulatory children with acute lower respiratory infection. The findings do not exclude a potential effect of radiography, but the potential benefit needs to be balanced against the hazards and expense of chest radiography. The findings apply to ambulatory children only.
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To estimate the short-term efficacy and toxicity of methotrexate (MTX) for the treatment of rheumatoid arthritis (RA). ⋯ Twenty-two percent of people on MTX withdrew due to adverse effects compared to seven percent of the placebo group. MTX has a substantial clinically and statistically significant benefit in the short term treatment of patients with RA.
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Aspirin has been known to be an effective analgesic for many years and is commonly used throughout the world for many different pain conditions. It is important for both prescribers and patients to have the best possible information about the efficacy and safety of analgesics, and this need is reflected in patient surveys which show that postoperative pain is often poorly managed. We also need to benchmark relative efficacy and safety of current analgesics so that we can compare them with new analgesics. ⋯ Aspirin is an effective analgesic for acute pain of moderate to severe intensity with a clear dose-response. Drowsiness and gastric irritation were seen as significant adverse effects even though the studies were single-dose. The pain relief achieved with aspirin was very similar milligram for milligram to that seen with paracetamol.
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Cochrane Db Syst Rev · Jan 2000
ReviewThrombolysis (different doses, routes of administration and agents) for acute ischaemic stroke.
Thrombolytic therapy is effective for acute myocardial infarction, a vascular disease with some similarities to acute ischaemic stroke. ⋯ There is not enough evidence to conclude whether lower doses of thrombolytic agents might be safer or more effective than higher doses in acute ischaemic stroke. It is not possible to conclude whether one agent might be better than another, or which route of administration might be best. No comparative data for streptokinase have been found.