Maternal death · pregnant women at increased risk of VTE during pregnancy and the early postnatal period
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Symptomatic thromboembolic events ( · pregnant women at increased risk of VTE during pregnancy and the early postnatal period
It is very uncertain whether antenatal (± postnatal) prophylaxis: heparin (LMWH or UFH) changes symptomatic thromboembolic events ( compared with no treatment/placebo (very low certainty).
1 finding from 1 review
Symptomatic PE · pregnant women at increased risk of VTE during pregnancy and the early postnatal period
It is very uncertain whether antenatal (± postnatal) prophylaxis: heparin (LMWH or UFH) changes symptomatic PE ( compared with no treatment/placebo (very low certainty).
1 finding from 1 review
Symptomatic DVT · pregnant women at increased risk of VTE during pregnancy and the early postnatal period
It is very uncertain whether antenatal (± postnatal) prophylaxis: heparin (LMWH or UFH) changes symptomatic DVT ( compared with no treatment/placebo (very low certainty).
1 finding from 1 review
Adverse effects sufficient to stop treatment · pregnant women at increased risk of VTE during pregnancy and the early postnatal period
It is very uncertain whether antenatal (± postnatal) prophylaxis: heparin (LMWH or UFH) changes adverse effects sufficient to stop treatment compared with no treatment/placebo (very low certainty).
1 finding from 1 review
Maternal death · women giving birth by elective or emergency caesarean (elective only (1 trial), emergency or elective (4 trials))
1 finding from 1 review
Symptomatic thromboembolic events ( · women giving birth by elective or emergency caesarean (elective only (1 trial), emergency or elective (4 trials))
It is very uncertain whether peripartum/postnatal prophylaxis (caesarean): heparin (LMWH or UFH) changes symptomatic thromboembolic events (timing of assessment unclear,… compared with no treatment/placebo (very low certainty).
1 finding from 1 review
Symptomatic PE · women giving birth by elective or emergency caesarean (elective only (1 trial), emergency or elective (4 trials))
It is very uncertain whether peripartum/postnatal prophylaxis (caesarean): heparin (LMWH or UFH) changes symptomatic PE (timing of assessment unclear, within 6 weeks… compared with no treatment/placebo (very low certainty).
1 finding from 1 review
Symptomatic DVT · women giving birth by elective or emergency caesarean (elective only (1 trial), emergency or elective (4 trials))
1 finding from 1 review
Adverse effects sufficient to stop treatment · women giving birth by elective or emergency caesarean (elective only (1 trial), emergency or elective (4 trials))
1 finding from 1 review
Incidence of recurrent VTE1 after initial treatment (up to 15 days) · patients with venous thromboembolism.
LMWH probably leads to lower incidence of recurrent VTE1 after initial treatment (up to 15 days) compared with UFH (moderate certainty).
1 finding from 1 review
Recurrent VTE · patients with venous thromboembolism.
LMWH probably leads to lower incidence of recurrent VTE1 (3 months compared with UFH (moderate certainty).
2 findings from 1 review
Reduction in thrombus size (pre‐ and post‐treatment venograms) · patients with venous thromboembolism.
LMWH may leads to lower reduction in thrombus size (pre‐ and post‐treatment venograms) compared with UFH (low certainty).
1 finding from 1 review
Major bleeding · patients with venous thromboembolism.
LMWH probably leads to lower incidence of major haemorrhagic episodes (during initial treatment ‐… compared with UFH (moderate certainty).
1 finding from 1 review
Overall mortality (end of · patients with venous thromboembolism.
LMWH showed no clear difference in overall mortality (end of compared with UFH (moderate certainty).
1 finding from 1 review
All‐cause mortality · People with cancer with perioperative thromboprophylaxis
LMWH prophylaxis showed no clear difference in mortality compared with UFH prophylaxis (moderate certainty).
1 finding from 1 review
Postoperative transfusion Median · People with cancer with perioperative thromboprophylaxis
1 finding from 1 review
Intraoperative blood loss (mL) · People with cancer with perioperative thromboprophylaxis
1 finding from 1 review
Postoperative drain volume · People with cancer with perioperative thromboprophylaxis
1 finding from 1 review
Thrombocytopenia · People with cancer with perioperative thromboprophylaxis
LMWH prophylaxis showed no clear difference in thrombocytopenia compared with UFH prophylaxis (moderate certainty).
1 finding from 1 review