Puerperium: PPH Flashcards
How can PPH be divided
Primary PPH
Secondary PPH
What is primary PPH
> 500ml in first 24h following delivery
What is minor PPH
500-1000
What is major PPH
> 1000
What is secondary PPH
Blood loss in 24h to 12W delivery
What are 3 causes of secondary PPH
Endometritis
Retained placenta
Abnormal involution of placenta
What is a mnemonic to remember causes of PPH
4T’s
What are the 4T’s of PPH
Tone
Tissue
Trauma
Thrombin
What is the most common cause of PPH
Impaired tone
What is uterine atony
Failure of uterus to contact following delivery
What are 3 maternal RF for uterine atony
> 40
BMI >35
Asian
What are 3 causes that cause over-distention of the uterus lead to impaired contraction
Polyhydramnios
Macrosomia
Multiple pregnancy
What are 2 factors in labour that leads to uterine atony
Prolonged
Induction
What are 3 placenta factors leading to PPH
Placenta praevia
Placental abruption
Previous PPH
What is the ‘Tissue’ cause of PPH
Retinaed placenta