Complications of pregnancy Flashcards
1st trimester
2nd trimester
3rd trimester
1-12
13-27
28-40
age of viability
24 weeks
various body changes during pregnancy?
- hypercoaguable state
- increased pH from resting hyperventilation
- decreased systemic vascular resistance
- progesterone relaxes smooth muscle leading to decreased peristalsis
- decreased creatinine
MCC of meternal mortality
- PE
- HTN (pre-eclampsia/eclampsia)
complications of twins
one fetus will take more and the other know will be anemic and the other polycythemic
vanishing twin
If the twin vanishes very early, the remaining twin is usually fine, however if one twin vanishes in the 2nd/3rd trimester there is a higher risk for the other fetus
most serious risk of multiple gestations
spontaneous preterm birth from stretch of the uterus
Braxton hicks
-usually come at very late phase of 3rd trimester but sometimes they come early….even if they present w/preterm contractions only 50% deliver then, the rest the contractions halt
How to prevent preterm birth
- progesterone
- cervical cerclage
tocolytic agent
- temporarily halt contractions
- but only partially delays for a few days, only given for woman that need a 2 day delay
- Steroids given to mother have positive effect on fetus, this 2 day window form tocolytics is really used just to give the mother steroids (only for preterm)
main tocolytic med
indomethacin
post-term pregnancy
born at gestational age >42 weeks, higher rate of morbidity and mortality due to insufficient O2/blood
oligohydramnios
Too little amniotic fluid
Amniotic fluid produced by kidneys of fetus, removal of fluid is done by fetus swallowing amniotic fluid
PROM also will cause this
polyhydramnios
Fetus is producing more urine from the mother having diabetes, decreased fetal swallowing
PROM
16-26 weeks (preterm, midtrimester) non-viable
26-37 weeks (prelabor) viable
(marginal) placenta previa
presence of placental tissue that extends over or lies at the margin to the internal os
total placenta previa
will bleed a lot, it is central
any woman over 20 weeks pregnant presenting with painless vaginal bleeding may have
placenta previa, no digital vaginal exam, do transabdominal US first
accreta
-placenta adheres to myometrium, leading to difficulty delivering the placenta
increta
-placenta invades even deeper into myometrium
percreta
-entire myometrium is invaded….WORST
MC risk factor for placenta accreta is
previous C-sections
placental abruption
placenta detaches before fetus is delivered
Unlike previa, this causes bleeding and PAIN due to contractions
abdominal pain with or without bleeding, you should still think of
placental abruption
primary and secondary PPH
- occurs within first 24 hours
- 24 hours to 12 weeks after delivery
- Atony is primary cause in primary/secondary-large uterus cannot contract well, leads to massive bleeding