Pre-eclampsia Flashcards
What is Pre-eclampsia?
New HTN @ pregnancy w End-organ dysfunction
What is the general Pathophysiology of Pre-eclampsia?
Poor placental perfusion, secondary to abn placentation
How an you understand Pathophysiology of Pre-eclampsia?
Compare normal Placentation vs Pre-eclampsia placentation
What are the steps for Normal placentation? (2 steps)
- Trophoblasts invades Endometrium + Spiral arteries –> Destroys tunica muscularis media
- Spiral arteries dilate –> High flow, low resistance circulation for pregnancy
What are the steps for Normal placentation in Pre-eclampsia? (3 steps)
- Spiral arteries remodelling incomplete –> Low flow, High resistance circulation for pregnancy
- Increase in BP + Hypoxia + Oxidative stress (bc inadeq uteroplacental perfusion)
- Systemic inflamm response + Endothelial cell dysfunction –> leaky blood vessels
What are the titles of RF for Pre-eclampsia? (2 things)
- High RF
- Moderate RF
What are the HIGH RF for Pre-eclampsia? (5 things)
- HTN
- Pre-eclampsia Hx
- AI conditions (e.g SLE)
- DM
- CKD
What are the MODERATE RF for Pre-eclampsia? (5 things)
- Age 40+
- BMI 35+
- 10+ yrs since previous preg
- 1st preg
- Pre-eclampsia FHx
How does number of RF affect Mx of Pre-eclampsia?
- 1+ HIGH RF: Aspirin
- 2+ MODERATE RF: Asprin
When should you offer women w RF Aspirin?
12 wks
What is a simple way to remember CF of Pre-eclampsia? (3 things)
- Proteinuria
- Rise in BP
- Edema
(PRE – eclampsia)
What are the CF Pre-eclampsia? (7 things)
- Headache
- Visual disturbance / blurriness
- N + V
- Brisk reflexes
- Upper abd / epigastric pain (bc liver swelling)
- Oedema
- Reduced urine output
What are the NICE guidelines for Dx of Pre-eclampsia?
BP reading + one Extra CF
What BP readings needed for for Dx of Pre-eclampsia? (2 things
- Systolic 140+
- Diastolic 90+
What are the CF needed for Dx of Pre-eclampsia? (3 things)
- Proteinuria (1+ on dipstick)
- Organ dysf CF
- Placental dysf (e.g foetal growth restriction / abn Doppler)
(only need 1 for Dx)
What CF suggest Organ dysfunction? (5 things)
- Raised creatinine
- Raised liver enzymes
- Seizures
- Thrombocytopaenia
- Haemolytic anaemia
What investigation does NICE recommend for women w sus Pre-eclampsia?
Placental Growth Factor Testing (PlGF) (low in Pre-eclampsia)
What are the Mx options for Gestational HTN (w/o proteinuria, aka NOT Pre-eclampsia)? (5 things)
- Tx n aim for BP below 135/85
- Admit if BP above 160/110
- Weekly bloods + urine dipstick
- Monitor foetal growth (serial growth scans)
- PlGF testing
How do the Mx options change once Pre-eclampsia is Dx? (4 things)
- Same as Gestation HTN plus:
- BP monitor every 48 hrs at least
- Don’t need Dipstick anymore (bc Dx already made)
- US to monitor: Foetus / amniotic fluid / Dopplers (2 weekly)
What are the MEDICAL Mx options for Pre-eclampsia? (6 things)
- Labetolol (anti-HTN) (FIRST LINE)
- Nifedipine (SECOND LINE)
- Methyldopa (THIRD LINE)
- IV hydralazine (SEVERE pre-eclampsia / eclampsia)
- IV Mg sulphate (during labour + 24 hrs after –> to prevent seizures)
- Fluid restriction
What is important to know about Methyldopa as Tx for Pre-eclampsia?
Need to stop it within 2 days of birth
When should you give IV Mg Sulphate in Pre-eclampsia?
- During labour
- 24 hours afterwards
What is the point of giving IV Mg Sulphate in Pre-eclampsia Mx?
Preventing seizures
When should you do Fluid restriction in Pre-eclampsia?
During labour
What is the point of doing Fluid restriction in Pre-eclampsia Mx?
Avoid fluid overload
What should you do for Pre-eclampsia when BP can’t be controlled?
Premature birth
What should you give Pre-eclampsia women having a Premature birth? Why?
- Corticosteroids
- Help mature foetal lungs
What should you monitor after delivery?
BP
When will the BP go back to normal after delivery?
Once placenta is removed
What Tx does NICE recommend you switch to after delivery? (3 things)
- Enalapril (FIRST LINE)
- Nifedipine / amlodipine (SECOND LINE) (FIRST LINE IN NIGGAS)
- Labetolol / Atenolol (THIRD LINE)
What is Eclampsia?
Refers to seizures assoc w Pre-eclampsia
What are the Mx options for Seizures (aka Eclampsia) assoc w Pre-eclampsia?
IV Mg Sulphate
What is a complication of Pre-eclampsia?
HELLP Syndrome
What are the CF of HELLP Syndrome? (3 things)
- Haemolysis
- Elevated Liver enzymes
- Low Platelets
(stands for HELLP)