Trends in twin births in New South Wales, Australia, 1990-1999

Roberts, CL; Algert, Charles S.; Morris, Jonathan M.; Henderson‐Smart, David J

doi:10.1016/s0020-7292(02)00147-9

Cited by 21 publications

(17 citation statements)

References 21 publications

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“…Our view is supported by trends in gestational age and the mode of delivery of twins from New South Wales, Australia [7] . During the period 1990 -1999, the percentage of twins born preterm ( < 37 weeks) increased from 40.8 to 48.8 % .…”

Section: Discussionsupporting

confidence: 52%

Correlates of the trend of cesarean section rates in twin pregnancies

Tul

Verdenik²,

Trojner-Bregar³

et al. 2012

Journal of Perinatal Medicine

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Section: Discussionsupporting

confidence: 52%

Correlates of the trend of cesarean section rates in twin pregnancies

Tul

Verdenik²,

Trojner-Bregar³

et al. 2012

Journal of Perinatal Medicine

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“…In all populations examined, maternal age at childbirth was increasing [22-25], caesarean delivery was becoming more common [23-26], and multiple pregnancy rates were also increasing [22,24,27]. The proportion of induced labors was noted to increase over a similar time period to the observed increase in PPH (Figure 3) [13,23,25,28].…”

Section: Resultsmentioning

confidence: 91%

“…Multiple pregnancy rates are also increasing [22,24,27]; possible contributory factors include assisted reproductive techniques and an aging population of women giving birth. Multiple pregnancy has been shown to be associated with an increased risk of PPH and associated complications in a number of studies [5,12,57,58] and thus the observed rise in the rate of multiple pregnancy may contribute to increasing PPH incidence.…”

Section: Discussionmentioning

confidence: 99%

Trends in postpartum hemorrhage in high resource countries: a review and recommendations from the International Postpartum Hemorrhage Collaborative Group

Knight

Callaghan

Berg

et al. 2009

BMC Pregnancy Childbirth

587

426

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BackgroundPostpartum hemorrhage (PPH) is a major cause of maternal mortality and morbidity worldwide. Several recent publications have noted an increasing trend in incidence over time. The international PPH collaboration was convened to explore the observed trends and to set out actions to address the factors identified.MethodsWe reviewed available data sources on the incidence of PPH over time in Australia, Belgium, Canada, France, the United Kingdom and the USA. Where information was available, the incidence of PPH was stratified by cause.ResultsWe observed an increasing trend in PPH, using heterogeneous definitions, in Australia, Canada, the UK and the USA. The observed increase in PPH in Australia, Canada and the USA was limited solely to immediate/atonic PPH. We noted increasing rates of severe adverse outcomes due to hemorrhage in Australia, Canada, the UK and the USA.ConclusionKey Recommendations1. Future revisions of the International Classification of Diseases should include separate codes for atonic PPH and PPH immediately following childbirth that is due to other causes. Also, additional codes are required for placenta accreta/percreta/increta.2. Definitions of PPH should be unified; further research is required to investigate how definitions are applied in practice to the coding of data.3. Additional improvement in the collection of data concerning PPH is required, specifically including a measure of severity.4. Further research is required to determine whether an increased rate of reported PPH is also observed in other countries, and to further investigate potential risk factors including increased duration of labor, obesity and changes in second and third stage management practice.5. Training should be provided to all staff involved in maternity care concerning assessment of blood loss and the monitoring of women after childbirth. This is key to reducing the severity of PPH and preventing any adverse outcomes.6. Clinicians should be more vigilant given the possibility that the frequency and severity of PPH has in fact increased. This applies particularly to small hospitals with relatively few deliveries where management protocols may not be defined adequately and drugs or equipment may not be on hand to deal with unexpected severe PPH.

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“…Maternal outcomes analysed included diagnosis of gestational diabetes, gestation at diagnosis and type of treatment for gestational diabetes. Pregnancy outcomes included mode of birth, induction of labour, maternal hypertensive disorders (pre‐eclampsia, gestational hypertension and superimposed pre‐eclampsia) classified according to the Society of Obstetric Medicine of Australia and New Zealand , prematurity < 37 weeks' gestation, birthweight < 10th centile or birthweight > 90th centile (using twin birthweight centile charts ), congenital anomaly and perinatal death, a composite of stillbirth (birth with no signs of life ≥ 20 weeks' gestation or birthweight > 400 g) and neonatal death (any infant death within 28 days of birth). A composite adverse pregnancy outcome comprising preterm birth, birthweight < 10th centile, birthweight > 90th centile, birth trauma, perinatal death, pre‐eclampsia or gestational hypertension was also defined.…”

Section: Methodsmentioning

confidence: 99%