Cochrane Db Syst Rev
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Cochrane Db Syst Rev · Apr 2009
Review Meta AnalysisVitamin D and vitamin D analogues for preventing fractures associated with involutional and post-menopausal osteoporosis.
Vitamin D and related compounds have been used to prevent osteoporotic fractures in older people. ⋯ Frail older people confined to institutions may sustain fewer hip fractures if given vitamin D with calcium. Vitamin D alone is unlikely to prevent fracture. Overall there is a small but significant increase in gastrointestinal symptoms and renal disease associated with vitamin D or its analogues. Calcitriol is associated with an increased incidence of hypercalcaemia.
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This is an update of a Cochrane review first published in 2001. At that stage there was insufficient evidence to recommend statins for the prevention of Alzheimer's disease (AD). The scope of this review has been expanded to include all forms of dementia. ⋯ There is good evidence from RCTs that statins given in late life to individuals at risk of vascular disease have no effect in preventing AD or dementia. Biologically it seems feasible that statins could prevent dementia due to their role in cholesterol reduction and initial evidence from observational studies was very promising. Indication bias may have been a factor in these studies however and the evidence from subsequent RCTs has been negative.
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Cochrane Db Syst Rev · Apr 2009
ReviewEffects of changes in the pre-licensure education of health workers on health-worker supply.
The current and projected crisis because of a shortage of health workers in low and middle-income countries (LMICs) requires that effective strategies for expanding the numbers of health workers are quickly identified in order to inform action by policymakers, educators, and health managers. ⋯ The evidence to estimate the likely effects of interventions in pre-licensure education to increase health-worker supply is generally insufficient or unavailable, particularly in LMICs. Promising innovations from a high-income country include providing financial support to health professional students or introducing mechanisms to identify and encourage potential students and offering support to 'at risk' students. These and other promising interventions should be evaluated in LMIC.
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Enthusiasts suggest that labouring in water and waterbirth increase maternal relaxation, reduce analgesia requirements and promote a midwifery model of care. Sceptics cite the possibility of neonatal water inhalation and maternal/neonatal infection. ⋯ Evidence suggests that water immersion during the first stage of labour reduces the use of epidural/spinal analgesia. There is limited information for other outcomes related to water use during the first and second stages of labour, due to intervention and outcome variability. There is no evidence of increased adverse effects to the fetus/neonate or woman from labouring in water or waterbirth. The fact that use of water immersion in labour and birth is now a widely available care option for women threatens the feasibility of a large, multicentre randomised controlled trial.
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Cochrane Db Syst Rev · Apr 2009
Review Meta AnalysisHMG CoA reductase inhibitors (statins) for dialysis patients.
Cardiovascular disease accounts for more than half the number of deaths among dialysis patients. The role of HMG CoA reductase inhibitors (statins) in the treatment of dyslipidaemia in dialysis patients is unclear and their safety has not been established. ⋯ Statins decreased cholesterol levels in dialysis patients similar to that of the general population. With the exception of one study, studies were of short duration and therefore the efficacy of statins in decreasing the mortality rate is still unclear. Statins appear to be safe in this high-risk population. Ongoing studies should provide more insight about the efficacy of statins in reducing mortality rates in dialysis patients.