• Warfarin use in pregnancy is restricted to the few situations where heparin is considered unsuitable,e.g. some women with mechanical heart valves.
• Women with previous VTE associated with antithrombin deficiency (who will often be on long-term
  oral anticoagulation) should be offered thromboprophylaxis with higher dose LMWH (either 50%,
  75% or full treatment dose)
• Danaparoid is a heparinoid that is mostly used in patients intolerant of heparin, either because of HIT or a skin allergy to heparins

According to Guidance from the British Committee
for Standards in Haematology, it is greater than 2 gram/dL

• People who experience fertility problems should be offered counselling because
  fertility problems themselves, and the investigation and treatment of fertility
  problems, can cause psychological stress.
• Counselling should be offered before, during and after investigation and
  treatment, irrespective of the outcome of these procedures.
• Counselling should be provided by someone who is not directly involved in the
  management of the individual's and/or couple's fertility problems.

There are no firm criteria for initiating red cell transfusion. The decision to provide blood transfusion should be based on both clinical and haematological assessment.

The 2009–12 Confidential Enquiries into Maternal Deaths and Morbidity report3 highlighted the importance
of correlating clinical signs and symptoms expected from different blood loss values to help target decisions on resuscitation, and also emphasised the importance of taking the woman’s weight into account.

The therapeutic target in case of massive blood loss is to maintain Haemoglobin  greater than 8 gm/dL.

Successful VBAC is more likely among women with previous caesarean for
fetal malpresentation (84%) compared with women with previous caesarean for either labour dystocia (64%) or fetal distress (73%) indications.

Risk of anal sphincter injury in women undergoing VBAC is 5%.

Birthweight is the strongest predictor of anal sphincter injury in women undergoing VBAC.