Cochrane Db Syst Rev
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Cochrane Db Syst Rev · Jul 2007
Review Meta AnalysisCalcium antagonists for aneurysmal subarachnoid haemorrhage.
Secondary ischaemia is a frequent cause of poor outcome in patients with subarachnoid haemorrhage (SAH). Its pathogenesis has been incompletely elucidated, but vasospasm probably is a contributing factor. Experimental studies have suggested that calcium antagonists can prevent or reverse vasospasm and have neuroprotective properties. ⋯ Calcium antagonists reduce the risk of poor outcome and secondary ischaemia after aneurysmal SAH. The results for 'poor outcome' depend largely on a single large trial of oral nimodipine; the evidence for other calcium antagonists is inconclusive. The evidence for nimodipine is not beyond all doubt, but given the potential benefits and modest risks of this treatment, oral nimodipine is currently indicated in patients with aneurysmal SAH. Intravenous administration of calcium antagonists cannot be recommended for routine practice on the basis of the present evidence. Magnesium sulphate is a promising agent but more evidence is needed before definite conclusions can be drawn.
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Cochrane Db Syst Rev · Jul 2007
ReviewWITHDRAWN: Continuous electronic heart rate monitoring for fetal assessment during labor.
Electronic fetal monitoring (EFM) is used in the management of labor and delivery in nearly three of four pregnancies in the United States. The apparent contradiction between the widespread use of EFM and expert recommendations to limit routine use indicates that a reassessment of this practice is warranted. ⋯ The only clinically significant benefit from the use of routine continuous EFM was in the reduction of neonatal seizures. In view of the increase in cesarean and operative vaginal delivery, the long-term benefit of this reduction must be evaluated in the decision reached jointly by the pregnant woman and her clinician to use continuous EFM or intermittent auscultation during labor.
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Cochrane Db Syst Rev · Jul 2007
Review Meta AnalysisOrthodontic treatment for prominent upper front teeth in children.
Prominent upper front teeth are an important and potentially harmful type of orthodontic problem. This condition develops when the child's permanent teeth erupt and children are often referred to an orthodontist for treatment with dental braces to reduce the prominence of the teeth. If a child is referred at a young age, the orthodontist is faced with the dilemma of whether to treat the patient early or to wait until the child is older and provide treatment in early adolescence. When treatment is provided during adolescence the orthodontist may provide treatment with various orthodontic braces, but there is currently little evidence of the relative effectiveness of the different braces that can be used. ⋯ The evidence suggests that providing early orthodontic treatment for children with prominent upper front teeth is no more effective than providing one course of orthodontic treatment when the child is in early adolescence.
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Cochrane Db Syst Rev · Jul 2007
Review Meta AnalysisRoutine abdominal drainage for uncomplicated laparoscopic cholecystectomy.
Laparoscopic cholecystectomy is the main method of treatment of symptomatic gallstones. Drains are used after laparoscopic cholecystectomy to prevent abdominal collections. However, drain use may increase infective complications and delay discharge. ⋯ Drain use after elective laparoscopic cholecystectomy reduces early post-operative pain, but increases wound infection rates and delays hospital discharge. We could not find evidence to support the use of drain after laparoscopic cholecystectomy.
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Cochrane Db Syst Rev · Jul 2007
Review Meta AnalysisInhaled corticosteroids compared to placebo for prevention of exercise induced bronchoconstriction.
The pathogenesis of exercise induced bronchoconstriction is likely multifactorial and is not completely understood. Inflammation plays an important role in the pathogenesis of exercise induced bronchoconstriction in asthmatic subjects but the evidence seems less strong in non-asthmatic subjects. The management of exercise induced bronchoconstriction focuses on prevention, through both pharmacologic and non-pharmacologic interventions. ⋯ Inhaled corticosteroids used for 4 weeks or more before exercise testing significantly attenuated exercise-induced bronchoconstriction. The relative benefits of inhaled corticosteroids compared to other forms of exercise induced bronchoconstriction treatment (sodium cromoglycate, nedocromil sodium, salbutamol, and other anti-inflammatory agents) remains unclear.