Cochrane Db Syst Rev
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Cochrane Db Syst Rev · Apr 2006
Review Meta Analysis Comparative StudyOral 5-aminosalicylic acid for induction of remission in ulcerative colitis.
The newer 5-ASA preparations were intended to avoid the adverse effects of SASP while maintaining its therapeutic benefits. The efficacy and safety of 5-ASA preparations have been evaluated in numerous clinical trials that have often lacked sufficient statistical power to arrive at definitive conclusions. Previously, it was found that newer 5-ASA drugs in doses of at least 2 g/day, were more effective than placebo but no more effective than SASP in inducing remission in ulcerative colitis. This updated review includes more recent studies and evaluates the effectiveness, dose-responsiveness, and safety of 5-ASA preparations in terms of more precise outcome measures. ⋯ The newer 5-ASA preparations were superior to placebo and tended towards therapeutic benefit over SASP. However, considering their relative costs, a clinical advantage to using the newer 5-ASA preparations in place of SASP appears unlikely. This review updates the existing review of oral 5-aminosalicylic acid for induction of remission in ulcerative colitis which was published in the Cochrane Library (Issue 1, 2006).
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Thrombolytic therapy is usually reserved for patients with clinically serious or massive pulmonary embolism (PE). Evidence suggests that thrombolytic agents may dissolve blood clot more rapidly than heparin and might reduce the death rate associated with PE. However, there are still concerns about the possible risk of adverse effects of thrombolytic therapy, such as major or minor haemorrhages. ⋯ We cannot conclude whether thrombolytic therapy is better than heparin for pulmonary embolism based on the limited evidence found. More double-blind RCTs, with subgroup analysis of patients presenting with haemodynamically stable acute pulmonary embolism compared to those patients with a haemodynamic unstable condition, are required.
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Cochrane Db Syst Rev · Apr 2006
Review Meta AnalysisSurgery versus medical therapy for heavy menstrual bleeding.
Heavy menstrual bleeding (HMB) significantly impairs the quality of life of many otherwise healthy women. Perception of HMB is subjective and management usually depends upon what symptoms are acceptable to the individual. Medical treatment options include oral medication and a hormone-releasing intrauterine system (LNG-IUS). Surgical options include conservative surgery (uterine resection or ablation) and hysterectomy. ⋯ Surgery, especially hysterectomy, reduces menstrual bleeding at one year more than medical treatments but LNG-IUS appears equally effective in improving quality of life. The evidence for longer term comparisons is weak and inconsistent. Oral medication suits a minority of women long term.
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Cochrane Db Syst Rev · Apr 2006
ReviewStrategies for detecting colon cancer and/or dysplasia in patients with inflammatory bowel disease.
Patients with longstanding ulcerative colitis and colonic Crohn's disease have an increased risk of colorectal cancer compared with the general population. This review assesses the evidence that endoscopic surveillance may prolong life by allowing earlier detection of colon cancer or its pre-cursor lesion, dysplasia, in patients with inflammatory bowel disease. ⋯ There is no clear evidence that surveillance colonoscopy prolongs survival in patients with extensive colitis. There is evidence that cancers tend to be detected at an earlier stage in patients who are undergoing surveillance, and these patients have a correspondingly better prognosis, but lead-time bias could contribute substantially to this apparent benefit. There is indirect evidence that surveillance is likely to be effective at reducing the risk of death from IBD-associated colorectal cancer and indirect evidence that it may be acceptably cost-effective.
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Pre-eclampsia is a common disorder of pregnancy with uncertain etiology. In Chinese herbal medicines, a number of herbs are used for treating pre-eclampsia. Traditional Chinese medicine considers that, when a woman is pregnant, most of the blood of the mother is directed to the placenta to provide the baby with the required nutrition; other maternal organs may in consequence be vulnerable to damage. These organs include the liver, the spleen, and the kidneys. The general effects of Chinese herbal medicines that can protect these organs may be valuable in pre-eclampsia by encouraging vasodilatation, increasing blood flow, and decreasing platelet aggregation. The use of Chinese herbal medicine is often based on the individual and presence of traditional Chinese medicine symptoms. ⋯ The effect of Chinese herbal medicine for treating pre-eclampsia remains unclear. There are currently no randomized controlled trials to address the efficacy and safety of Chinese herbal medicine for the treatment of pre-eclampsia. Well conducted randomized controlled trials are required.