hemoorrgae Flashcards
1 post partum hemorrage
withn 24 hours of gving birth
2 postpartum
24h - 6 weeks after giving birth
causes of pph
- atony - most commom
- large placenta
- retained placental products
- genetial tract trauma
- coagulation disorders
- abnomal placneta such as acreta
- uterine inversion (rare)
- uterine rupture(rare)
placenta acreta
placenta increta
placenta percreta
which is most common
acrete: too deep and firm - most common
increte: even deeper into the muscular wall
precrete: goes through the uterus and sometime to surroundign organs like bladder most serious
PPH most common cause
atony
risk factors for atony
advanced age CS delivery multiple pregnancies preeclampsia retained placental parts chorioamnionitis
tx
first uterine massage
pharmacological : oxtyocin increased frequency and streght of contractions second is methergine works like oxy but is a potent constrictor whereas oxy is a dilator so wary in HTN , or prostaglandins (increase streght)
if these drugs do not work and massage now you have to go more invasive!
invasive methods PPH
D&C if suspect retained products artery ligation artery embolisation hysterectomy intrauterine balloon tamponade
what to do in case of accreta
if its known before pregnancy then you deliver via CS and remove the uterus
how to diagnose acrtea
it doesnt really have symptoms but occacionally it can be diagnose on ultrasound
easy way to remember causes of PPH
4 t's tone thrombin tissue - retained trauma- birht canal ijury
secondary causes of pph
Endometritis (endometrial infection). This is often accompanied with offensive discharge and may be due to retained placental tissue leading to uterine atony.
Displacement of a retained blood clot
Poor healing of a perineal tear or genital tract trauma
Abnormal involution of the placental site
Choriocarcinoma (rare)
def of low lying placenta
the placenta is within 2 cm of cervical os so isnt techinally covering it
mcq 5 clinical forms of placenta previa
low lying marginal - closer to the opening than low lying complete incomplete isthmico cervical
can u give birth naturally with previa
usually its CS but the only indication is if cervix is soft and effaced and dilated etc