Cochrane Db Syst Rev
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Cochrane Db Syst Rev · Jan 2002
ReviewUrsodeoxycholic acid and/or antibiotics for prevention of biliary stent occlusion.
Malignant biliary obstruction, which requires endoscopic stenting as palliative therapy, is often complicated by clogging of the stent with subsequent jaundice and/or cholangitis. Stent clogging may be caused by microbiological adhesion and biliary stasis. Therefore, antibiotics and choleretic agents like ursodeoxycholic acid (UDCA) have been investigated to see whether they prolong stent patency. ⋯ Treatment with UDCA and/or antibiotics to prevent clogging of biliary stents in patients with malignant stricture of the biliary tract cannot be recommended routinely on the basis of the existing randomised clinical trials. Further trials are needed with rigorous methodology and sufficient statistical power.
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Cochrane Db Syst Rev · Jan 2002
ReviewHorse chestnut seed extract for chronic venous insufficiency.
Conservative therapy of chronic venous insufficiency (CVI) consists largely of compression treatment. However, this often causes discomfort and has been associated with poor compliance, which renders oral drug treatment an attractive option. ⋯ The evidence presented implies that HCSE is an efficacious and safe short-term treatment for CVI. However several caveats exist and more rigorous RCTs are required to assess the efficacy of this treatment option.
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Cochrane Db Syst Rev · Jan 2002
ReviewShort acting beta agonists for recurrent wheeze in children under 2 years of age.
Wheeze is a common symptom in infancy and is a common cause for both primary care consultations and hospital admission. Beta2-adrenoceptor agonists (b2-agonists) are the most frequently used as bronchodilator but their efficacy is questionable. ⋯ There is no clear benefit of using b2-agonists in the management of recurrent wheeze in the first two years of life although there is conflicting evidence. At present, further studies should only be performed if the patient group can be clearly defined and there is a suitable outcome parameter capable of measuring a response.
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Multifocal motor neuropathy is a distinct clinical entity characterised by progressive, predominantly distal, asymmetrical limb weakness and minimal sensory abnormality. The pathognomonic feature of this condition is the presence of multiple partial motor nerve conduction blocks. Controlled trials have demonstrated the efficacy of regular intravenous immunoglobulin infusions. Immunosuppressive agents have been used as primary, second-line or adjunctive agents for its treatment. This review was undertaken to identify and review systematically randomised controlled trials of immunosuppressive agents. The use of intravenous immunoglobulin will be the subject of a separate review. ⋯ There are no randomised controlled trials to indicate whether immunosuppressive agents are beneficial in multifocal motor neuropathy.
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Myasthenia gravis is an autoimmune disease mediated by auto-antibodies direct against the nicotinic receptor for acetylcholine. Patients would be expected to benefit from plasma exchange. Non-randomised studies suggest that plasma exchange is beneficial in the short term. ⋯ There are no adequate randomised controlled trials but many case series report short-term benefit from plasma exchange in myasthenia gravis, especially in myasthenic crisis. There are no adequate randomised controlled trials to determine whether plasma exchange improves the long-term outcome for myasthenia gravis. Further research is need to compare plasma exchange with alternative short-term treatments for myasthenic crisis and to determine the value of long-term plasma exchange for treating myasthenia gravis.