British journal of obstetrics and gynaecology
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Br J Obstet Gynaecol · Jul 1998
Comparative StudyPlanned vaginal delivery versus elective caesarean section: a study of 705 singleton term breech presentations.
To compare neonatal mortality and neonatal and maternal morbidity in planned vaginal delivery versus elective caesarean section for breech presentation at term. To identify factors associated with the risk of caesarean section during labour. ⋯ There is no firm evidence to recommend systematic elective caesarean section for breech presentation at term. Large unbiased studies are needed to determine whether a potential benefit for the newborns outweighs the increased risk for the mothers associated with elective caesarean section.
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Br J Obstet Gynaecol · Jul 1998
Randomized Controlled Trial Multicenter Study Clinical TrialThe haemodynamic effects of ketanserin versus dihydralazine in severe early-onset hypertension in pregnancy.
To compare the haemodynamic efficacy of ketanserin (a selective serotonin2-receptor blocker) with dihydralazine in the management of severe early-onset hypertension in pregnancy. ⋯ The antihypertensive profile of ketanserin is characterised by an early and gradual reduction of blood pressure in combination with a moderate decrease in systemic vascular resistance and no significant change in cardiac output. Dihydralazine causes market tachycardia resulting in a considerable increase in cardiac output.
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To determine the effect of labour on free oxygen radical activity in the fetus, as reflected by lipid peroxide levels in umbilical cord arterial blood. ⋯ The findings indicate that high levels of free oxygen radical activity in the fetus are a function of the labour process, as are changes in acid-base balance.
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Br J Obstet Gynaecol · Jul 1998
Expression of endothelin-1 in amniotic fluid embolism and possible pathophysiological mechanism.
Since endothelin is a potent vasoconstrictor and bronchoconstrictor, endothelin-1 expression in the lung was investigated using immunohistological techniques in two cases of amniotic fluid embolism. Intense expression of endothelin-1 was observed in amniotic squames while weaker staining was seen in alveolar epithelium, bronchiolar epithelium and intraalveolar macrophages and focally in vascular endothelium. Endothelin-1 may play a role in the early and transient haemodynamic alteration of pulmonary hypertension in amniotic fluid embolism.
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Br J Obstet Gynaecol · Jul 1998
Meta AnalysisEfficacy of minor analgesics in primary dysmenorrhoea: a systematic review.
To quantify the efficacy and safety of naproxen, ibuprofen, mefenamic acid, aspirin and acetaminophen (paracetamol) in the treatment of primary dysmenorrhoea through a systemic overview of randomised controlled trials. ⋯ Naproxen, ibuprofen, mefenamic acid and aspirin are all effective in primary dysmenorrhoea. Ibuprofen appears to have the most favourable risk-benefit ratio. Acetaminophen appears to be less effective than nonsteroidal anti-inflammatory drugs, but there was only one trial meeting our inclusion criteria and further studies are required.