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The effect of low molecular weight heparin (dalteparin) on duration and initiation of labour.

Isma, Nazim LU ; Svensson, Peter LU ; Lindblad, Bengt LU and Lindqvist, Pelle LU (2010) In Journal of Thrombosis and Thrombolysis 30. p.149-153
Abstract
It has recently been reported that women treated with low molecular weight heparin (LMWH) during pregnancy had 3 h shorter duration of delivery. The aim of the present study was to evaluate whether LMWH (dalteparin) affects labour. From January 1996 to December 2005, 217 consecutive pregnancies, out of 34 216 newborn (prevalence 0.6%) that were given thromboprophylaxis with dalteparin (usually 5,000 IU once daily). These 217 consecutive pregnancies were compared to an unselected control group (n = 1,499) of gravidae. Main outcome was time in first and second stage of labour and gestational age at delivery. Among nulliparous women, there were significantly fewer women with prolonged first stage of labour as compared to controls (4.1% vs.... (More)
It has recently been reported that women treated with low molecular weight heparin (LMWH) during pregnancy had 3 h shorter duration of delivery. The aim of the present study was to evaluate whether LMWH (dalteparin) affects labour. From January 1996 to December 2005, 217 consecutive pregnancies, out of 34 216 newborn (prevalence 0.6%) that were given thromboprophylaxis with dalteparin (usually 5,000 IU once daily). These 217 consecutive pregnancies were compared to an unselected control group (n = 1,499) of gravidae. Main outcome was time in first and second stage of labour and gestational age at delivery. Among nulliparous women, there were significantly fewer women with prolonged first stage of labour as compared to controls (4.1% vs. 8.5%, P = 0.047). In addition, the duration of first stage of labour was 1 h shorter among those treated with LMWH (5.2 vs. 6.2 h, P = 0.06). There were no such differences among parous women. The risk of prematurity, profuse blood loss, and postpartum anaemia was almost doubled among those treated with LMWH (11.5% vs. 5.9%, P = 0.002, 10.6% vs. 5.9%, P < 0.001, and 12.9% vs. 8.7%, P = 0.048, respectively). Treatment with a prophylactic dose of LMWH (dalteparin) during pregnancy was related to fewer women with prolonged first stage of labour, but also to an increased risk of prematurity and blood loss complications. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Journal of Thrombosis and Thrombolysis
volume
30
pages
149 - 153
publisher
Springer
external identifiers
  • WOS:000280262500005
  • PMID:19949968
  • Scopus:77957950739
ISSN
1573-742X
DOI
10.1007/s11239-009-0428-x
language
English
LU publication?
yes
id
b404d16d-849b-4b39-957e-5c7219bc9eef (old id 1524161)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/19949968?dopt=Abstract
date added to LUP
2010-01-07 15:44:08
date last changed
2016-10-13 04:34:35
@misc{b404d16d-849b-4b39-957e-5c7219bc9eef,
  abstract     = {It has recently been reported that women treated with low molecular weight heparin (LMWH) during pregnancy had 3 h shorter duration of delivery. The aim of the present study was to evaluate whether LMWH (dalteparin) affects labour. From January 1996 to December 2005, 217 consecutive pregnancies, out of 34 216 newborn (prevalence 0.6%) that were given thromboprophylaxis with dalteparin (usually 5,000 IU once daily). These 217 consecutive pregnancies were compared to an unselected control group (n = 1,499) of gravidae. Main outcome was time in first and second stage of labour and gestational age at delivery. Among nulliparous women, there were significantly fewer women with prolonged first stage of labour as compared to controls (4.1% vs. 8.5%, P = 0.047). In addition, the duration of first stage of labour was 1 h shorter among those treated with LMWH (5.2 vs. 6.2 h, P = 0.06). There were no such differences among parous women. The risk of prematurity, profuse blood loss, and postpartum anaemia was almost doubled among those treated with LMWH (11.5% vs. 5.9%, P = 0.002, 10.6% vs. 5.9%, P &lt; 0.001, and 12.9% vs. 8.7%, P = 0.048, respectively). Treatment with a prophylactic dose of LMWH (dalteparin) during pregnancy was related to fewer women with prolonged first stage of labour, but also to an increased risk of prematurity and blood loss complications.},
  author       = {Isma, Nazim and Svensson, Peter and Lindblad, Bengt and Lindqvist, Pelle},
  issn         = {1573-742X},
  language     = {eng},
  pages        = {149--153},
  publisher    = {ARRAY(0x82905b8)},
  series       = {Journal of Thrombosis and Thrombolysis},
  title        = {The effect of low molecular weight heparin (dalteparin) on duration and initiation of labour.},
  url          = {http://dx.doi.org/10.1007/s11239-009-0428-x},
  volume       = {30},
  year         = {2010},
}