British journal of obstetrics and gynaecology
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Br J Obstet Gynaecol · May 1993
Comparative StudyThe effect on fetal arteriolar oxygen saturation resulting from giving oxygen to the mother measured by pulse oximetry.
To determine if pulse oximetry could detect any changes in fetal arteriolar oxygen saturation resulting from maternal administration of oxygen. ⋯ This study confirms that a pulse oximeter is able to measure an increase in fetal arteriolar oxygen saturation when oxygen is administered to the mother.
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Br J Obstet Gynaecol · May 1993
Randomized Controlled Trial Clinical TrialVaginal delivery after previous caesarean section: is X-ray pelvimetry necessary?
To determine whether antepartum X-ray pelvimetry (XRP) reliably identified women suitable for a trial labour or repeat elective caesarean section after one previous section. ⋯ Antepartum XRP is not necessary prior to a trial labour in women with one previous caesarean section. It increases the caesarean section rate and is a poor predictor of the outcome of labour.
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To identify risk factors associated with postpartum haemorrhage (PPH) in order to improve the effectiveness of antenatal screening. ⋯ These findings confirm the importance of previously recognised factors such as low parity, poor obstetric history, anaemia, and prolonged labour, but call into question the significance of grand multiparity. Previously undocumented factors such as maternal age greater than 35 years and occiput posterior head position emerged as predictors worthy of further investigation.
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Developments in the signal processing of Doppler ultrasound used for the detection of fetal heart rate (FHR) have improved the operation of cardiotocographs. These developments are reviewed and the advantages and disadvantages of the various Doppler and signal processing methods are compared.
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Br J Obstet Gynaecol · Sep 1992
Randomized Controlled Trial Comparative Study Clinical TrialA comparative study of the use of epoprostenol and dihydralazine in severe hypertension in pregnancy.
To compare the antihypertensive effects of epoprostenol sodium (prostacyclin) with that of dihydralazine in acute hypertensive crises of pregnancy. ⋯ The place of epoprostenol in pregnancy might be in patients with severe hypertension and tachycardia and in those requiring acute control of severe hypertension on the operating table before general anaesthesia.