Hypertension in Pregnancy Flashcards
What % of primigravid women are affected by mild pre eclampsia?
10%
How does the plasma volume change in pregnancy?
increases 45%
How does the cardiac output change in pregnancy?
increases 30-50%
How does the stroke volume change in pregnancy?
increases 25%
How does the heart rate change in pregnancy?
increases 15-25%
How does the peripheral vascular resistance change in pregnancy?
decreases 15-20%
How is hypertension in pregnancy defined?
> /= 140/90 on 2 occasions OR
160/110 once OR
30/15 compared to first trimester reading
If a woman has hypertension in the first half of pregnancy, what is it likely to be?
undiagnosed hypertension
What are the risks of pregnancy for those with pre existing hypertension?
2x increase in PET
intrauterine growth restriction
abruption
What is pregnancy induced hypertension?
second half of pregnancy
resolved within 6 weeks of delivery
In PIH - what % progresses to pre eclampsia?
15%
What are the symptoms/signs of pre eclampsia?
hypertension
proteinuria (>/= 0.3g/l)
oedema
Can PET be asymptomatic?
YES
What is early PET?
<34 weeks
higher risk of maternal and foetal complications
What is late PET?
> 34 weeks
most common
more likely to lead to eclampsia and maternal death
What is seen in the placenta in early PET?
extensive villious and vascular lesions
What is seen in the placenta in late PET?
minimal placental lesions