If the placenta is thought to be low lying (less than 20 mm from the internal os) or praevia
(covering the os) at the routine fetal anomaly scan, a follow-up ultrasound examination
including a TVS is recommended at 32 weeks of gestation to diagnose persistent low-lying
placenta and/or placenta praevia.

Use of TVS- to accurately see the placental edge. Also, cervical length is a predictor of antepartum bleeding and emergency preterm caesarean section in placenta praevia. Women with a cervical length of less than 31 mm have a 16 times higher risk of emergency
caesarean section due to massive haemorrhage.

Routine ultrasound screening is not useful. Selective ultrasound screening can be considered for women with breech presentation at term who are considering vaginal birth.

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

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

• No screening test is entirely accurate.
• 17% to 25% of women who have a positive swab at 35–37 weeks of gestation will be GBS negative at delivery.
•  5% to 7% of women who are GBS negative at 35–37 weeks of gestation will be GBS positive at delivery.
• Many of the babies who are severely affected from GBS infection are born prematurely, before the suggested time for screening.

Non-hormonal contraceptive methods are recommended.

According to UKMEC- For women with 'Current breast cancer' , Cu IUCD is Category 1 , all other contraceptive methods are category 4.

For women with 'Past' breast cancer' , Cu IUCD is Category 1 , all other contraceptive methods are category 3.

The recommended dose is - 3 g intravenous benzylpenicillin be given as soon as possible after the onset of labour  and 1.5 g 4 hourly until delivery.
The first dose should be given at least 4 hours prior to delivery.

Bonus info- There is at least one more condition in which the delivery should be delayed for some time after appearance of the condition- Chickenpox ! In varicella rash- planned delivery should normally be avoided for at least 7 days after the onset of the maternal rash to allow for the passive transfer of antibodies from mother to child.

The RAADP scheme should be regarded as supplementary to any anti-D Ig administered for sensitising episodes.

In pregnancies<12 weeks gestation, anti-D Ig prophylaxis is only indicated following ectopic pregnancy, molar pregnancy, therapeutic termination of pregnancy and in
cases of uterine bleeding where this is repeated, heavy
or associated with abdominal pain. The minimum dose should be 250 IU. A test for fetomaternal haemorrhage (FMH) is not required

This is GBS bacteruria. GBS bacteriuria is associated with a higher risk of chorioamnionitis and neonatal disease. Women with GBS bacteriuria should be offered IAP.

Women with GBS urinary tract infection (growth of greater than 10^5 cfu/ml) during pregnancy should receive appropriate treatment at the time of diagnosis as well as IAP. 

It is not necessary to administer anti-D Ig to D negative females without childbearing potential, or males who receive D positive platelets.

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Women are generally advised to wait for at least 2 years after treatment for breast cancer before
conception.

The six elements considered to be reflective of good care are:
 Consultant obstetrician planning and directly supervising delivery.
 Consultant anaesthetist planning and directly supervising anaesthesia at delivery.
 Blood and blood products available.
 Multidisciplinary involvement in preoperative planning.
 Discussion and consent, including possible interventions (such as hysterectomy, leaving the placenta in situ, cell
salvage and interventional radiology).
 Local availability of a level 2 critical care bed.

According to the RCOG- Any lack of compliance with the care bundle by the clinical team for a woman with either placenta praevia or accreta
should be investigated.

According to MBBRACE-UK 2014 to 2016- Women who have had a previous caesarean section who also have either placenta praevia or an anterior placenta underlying the old caesarean section scar at 32 weeks of gestation are at increased risk of placenta accreta and should be managed as if they have placenta accreta, with appropriate preparations for surgery made.

• IAP( Intrapartum antibiotic prophylaxis)  is recommended for women in confirmed preterm labour.  The risk of GBS infection is higher with preterm delivery and the mortality rate from infection is increased (20–30% versus 2–3% at term). For this reason, IAP is recommended for women in confirmed preterm labour.
• There is no evidence that intrapartum vaginal cleansing will reduce the risk of neonatal GBS disease.
• Polymerase chain reaction or other near-patient testing at the onset of labour is not recommended.