In women at very high risk of thrombosis , UFH may be used peripartum in
preference to LMWH where there is an increased risk of haemorrhage or where regional anaesthetic techniques may be required.

- For pregnancies at more than 16 weeks of gestation the term low-lying placenta should be used when the placental edge is less than 20 mm from the internal os on transabdominal or transvaginal scanning (TVS).

If the distance between the internal os and the placental edge is 20 mm or more on TVS, the placental location should be recorded as normal and managed as per routine

• The term placenta praevia should be used when the placenta lies directly over the internal os.

- For pregnancies at more than 16 weeks of gestation the term low-lying placenta should be used when the placental edge is less than 20 mm from the internal os on transabdominal or transvaginal scanning (TVS).

• The term placenta praevia should be used when the placenta lies directly over the internal os.

The algorithm suggested by RCOG for low lying placenta can be accessed HERE 

ABG Analysis is of limited value in diagnosis of PE.

In one study- ABG analysis showed that only 10% had arterial P O2 levels less than 60 mmHg and 2.9% had oxygen saturation levels less than 90%.

Codeine is converted to active metabolites, mainly morphine. The ultrarapid metaboliser phenotype is due to duplications of the CYP2D6 gene, and prevalence varies by ethnic origin.

Ultrarapid metabolisers who take codeine can have up to 50% higher plasma concentrations
of its active metabolite morphine than extensive metabolisers, with the consequence that there is a risk of serious toxicity even at therapeutic doses of codeine in such individuals.

;WD,W

Undertake a urine dipstick test in all women presenting with urinary
incontinence to detect the presence of blood, glucose, protein, leucocytes and nitrites in the urine.

The diagnostic criteria of DKA are-

bocarb

glucose