Post-Partum Haemorrhage Flashcards
What is PPH?
Loss of 500ml or more within 24 hours of giving birth
Minor blood loss 500-1000ml
Major blood loss >1000ml
In UK, 18% of births suffer a PPH.
Major PPH complicates 1.3% of births.
Secondary PPH
Abnormal or excessive bleeding from the birth canal between 24 hours - 12 weeks postnatally
4 causes of PPH
- Tone
- Tissue
- Trauma
- Thrombin
Tone
Uterine atony / poor uterine tone cause 70-90% PPH
If uterus does not contract after birth and occlude the spinal arteries that supply placenta, PPH occurs.
Hence, utertonic works!
Tissue
If any tissue left after birth, such as placenta or membrane, uterus will continue bleeding to remove them (10% PPH).
Retained products may be inadvertently expelled during fundal massage, causing clots & tissue to be expelled from vagina
Trauma
Trauma to genital tract occurs in 85% of births
Clotting problems are rare (1% PPH). Coagulopathy is rare in these cases.
Treatment
- Fundal Massage
- Oxytocin
- Direct Pressure
- IV drugs
Fundal Massage
Most common is uterine atony.
only do this if placenta has delivered
Fundal massage : place left hand just above umbilicus and move behind and downwards towards symphysis. Contracted hard uterus felt? Good
Soft and boggy uterus? ‘rubbing up’ a contraction should happen, massage the fundus in a circular motion to stmiulate a contraction (can cause pain)
Oxytocin
Produced during immediate bonding / skin to skin & breast feeding; contracts uterus to reduce bleeding.
Direct Pressure
Trauma to genital tract may require external pressure with a maternity pad or gauze; definitive tx is suturing perineum.
Tissue
Remaining placental tissue can cause bleeding
PPH diagram
IF PLACENTS HAS BEEN EXPELLED…
- Wide bore cannula.
- Carbetocin if BP allows.
- Continue fundal message.
- 800mcg misoprostol sublingually if not worked after 15 minutes.
- Consider TXA.
IF PLACENTA IS IN SITU…
Do not do fundal massage as it may cause placenta to partially separate from uterine wall, causing further haemorrhage
Carbetocin / Misoprostol as above
Rapid conveyance, consider TXA