PRospective Evaluation of Peripartum Anticoagulation ManaGement for ThrOmboembolism

Inclusion Criteria:

* 18 years of age or older
* Requires anticoagulation during the antepartum period of pregnancy for a VTE indication, including at least one of:

  1. Objectively confirmed VTE (DVT, superficial vein thrombosis \[SVT\], PE or unusual site thrombosis) diagnosed during the current pregnancy;
  2. Objectively confirmed VTE diagnosed in a prior pregnancy;
  3. Objectively confirmed VTE diagnosed when not pregnant;
  4. Inherited or acquired thrombophilia requiring anticoagulation.
* Receiving any dose or type of LMWH during the antepartum period

Exclusion Criteria:

* Anticoagulation for a non-VTE indication, including prosthetic heart valves, atrial fibrillation, prevention of placenta-mediated pregnancy complications, or prevention of recurrent pregnancy loss (participants can be included with a diagnosis of antiphospholipid syndrome (APS) with or without thrombotic events)
* Unable to provide or declined consent.
* Home or birthing centre planned delivery.