Cochrane Db Syst Rev
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Cochrane Db Syst Rev · Jan 2000
ReviewLaparoscopic "drilling" by diathermy or laser for ovulation induction in anovulatory polycystic ovary syndrome.
Problems in inducing ovulation in women with polycystic ovary syndrome (PCOS) and anovulation (failure to ovulate) are well recognised. Surgical ovarian wedge resection was the first established treatment for anovulatory PCOS patients but was largely abandoned of the risk of post-surgical adhesion formation. It was replaced by medical ovulation induction with clomiphene and gonadotrophins. However patients with PCOS treated with gonadotrophins often have a polyfollicular response and are exposed to the risks of ovarian hyperstimulation syndrome (OHSS) and multiple pregnancy. Although effective, it is an expensive, stressful and time consuming form of treatment requiring intensive monitoring. A new surgical therapy, laparoscopic ovarian "drilling", may avoid or reduce the need, or facilitate the use, of gonadotrophins for inducing ovulation. The procedure can be done on an outpatient basis with less trauma and fewer postoperative adhesions. It has been claimed in many uncontrolled observational studies that it is followed, at least temporarily, by a high rate of spontaneous postoperative ovulation and conception, or that subsequent medical ovulation induction becomes easier. ⋯ The value of laparoscopic ovarian drilling as a primary treatment for subfertile patients with anovulation (failure to ovulate) and polycystic ovarian syndrome (PCOS) is undetermined. There is insufficient evidence to determine a difference in ovulation or pregnancy rates when compared to gonadotrophin therapy as a secondary treatment for clomiphene resistant women. Multiple pregnancy rates are reduced in those women who conceive following laparoscopic drilling. None of the studied modalities of drilling technique had any obvious advantages.
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Surgical bypass of an occluded arterial segment is the mainstay of treatment for patients with critical limb ischaemia. As with many surgical interventions, however, it was introduced without formal evaluation. ⋯ There is limited evidence for the effectiveness of bypass surgery and further large trials are required.
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Cochrane Db Syst Rev · Jan 2000
ReviewLeukotriene receptor antagonists for non-cystic fibrosis bronchiectasis.
Leukotriene receptor antagonists are a new class of drug that were initially identified for use in asthma. As they have an effect on neutrophil mediated inflammation, they may be of benefit in bronchiectasis. ⋯ Further research is required to establish any benefit from the use of leukotriene antagonists in bronchiectasis.
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Cochrane Db Syst Rev · Jan 2000
ReviewNear-infrared spectroscopy for fetal assessment during labour.
Over the past four decades, continuous electronic fetal monitoring (EFM) has been increasingly employed to detect fetal acidemia in labor, with a view toward prevention of hypoxic ischemic encephalopathy, permanent neurologic injury, and death. Although very sensitive, this technology has low specificity, and a high false positive rate. This false positive rate has resulted in operative intervention on behalf of many fetuses who were not in fact in danger of neurologic injury or death. Near-infrared spectroscopy has been developed to directly measure fetal cerebral oxygenation, with a view toward identification of those fetuses truly at risk. ⋯ There is currently insufficient evidence to assess the efficacy of fetal surveillance by near-infrared spectroscopy.
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Cochrane Db Syst Rev · Jan 2000
ReviewBotulinum toxin type A in the treatment of lower limb spasticity in cerebral palsy.
To determine whether botulinum toxin (BtA) is an effective and safe treatment for lower limb spasticity in children with cerebral palsy. Functional outcomes are of particular interest. ⋯ This systematic review has not revealed strong controlled evidence to support or refute the use of BtA for the treatment of leg spasticity in cerebral palsy. Ongoing randomised controlled trials are likely to provide useful data on the short term effects of BtA for leg spasticity. Future research should also assess the longer term use of BtA. Ideally studies should be pragmatic in their approach to dose and distribution of toxin to reflect practise. Outcome measures assessing function and disability would give the most useful information.