According to NICE ( Intrapartum care for healthy
women and babies )

• Check blood pressure every 5 minutes for 15 minutes during
  establishment or after further boluses
• Check sensory block hourly
•  Continuous electronic fetal monitoring for 30 minutes during
  establishment or after boluses of 10 ml or more
• Intravenous access should be established prior to commencing regional analgesia.
• Do not administer routine preloading and maintenance fluid

NSAIDs can lead to neonatal pulmonary hypertension and premature closure of the ductus arteriosus.

NSAIDs also reduce fetal renal blood flow and thus urine production leading to a reduced amniotic fluid volume.

The use of NSAIDs should, therefore, be avoided at more than 30 weeks of gestation.

A systematic review reported that women with one, two, or three or more previous caesarean deliveries experience a 1%, 1.7% or 2.8% risk of placenta previa in a subsequent pregnancy. ( Source- Birth After Previous
Caesarean Birth Green-top Guideline No. 45 ).

Assisted reproductive technology ( RR- 3.71, OR 2.67)and maternal smoking ( OR 1.42)  increase the risk of placenta praevia.

A statement from the FDA was issued following the publication of two case reports28,29 linking first trimester use of opioids to increased neural tube defects. It was concluded that the opioid use was linked to a small increase in neural tube defects, although evidence was limited and further research is needed.

In clinically suspected DVT or PE, treatment with low-molecular-weight heparin (LMWH) should be commenced immediately until the diagnosis is excluded by objective testing, unless treatment is strongly contraindicated.

Compression duplex ultrasound should be undertaken where there is clinical suspicion of DVT.
If ultrasound is negative and there is a low level of clinical suspicion, anticoagulant treatment can be discontinued.

If ultrasound is negative and a high level of clinical suspicion exists, anticoagulant
treatment should be discontinued but the ultrasound should be repeated on days 3 and 7.

Intravenous unfractionated heparin is the preferred, initial treatment in massive PE with cardiovascular compromise.

• 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