Pre eclampsia and Eclampsia Flashcards
Definition of pre eclampsia
- BP > 140/90
- > 300 mg of proteinuria
- within 24 hours
- After 24 weeks
PAPP-A in pre eclampsia
- Low pregnancy associated plasma protein associated with high risk of pre eclampsia
Blood test results in pre eclampsia
- Raised uric acid
- Low platelets
- High Hb
( help differentiate pre eclampsia from PIH) - Low PAPP-A
Ultrasound results indicating pre eclampsia
- Uterine artery doppler at 11-13 or 22-24 predictive of early onset pre eclampsia
- Fetal growth restrictions on ultra sound
Risk factors for pre eclampsia
- Previous onset pre eclampsia x 7 risk
- Age > 40
- Family history
- Obesity
- Multiple pregnancy
Pre existing medical conditions which increase risk of pre eclampsia ;
- Hypertension
- Renal disease
- Diabetes
- Anti phospholipid antibodies
- Thrombophilia
Prevention of pre eclampsia
Women with past medical history of severe early onset pre eclampsia should be offered low dose asprin < 16 weeks to reduce incidence
Most common presentation of pre eclampsia
Asymptomatic
Symptoms which may occur in severe pre eclampsia
- Head ache - frontal
- Visual disturbance
- Epigastric/RUQ pain
- N & V
- Facial oedema
Pain in pre eclampsia
- Frontal headache
2. Epigastric/RUQ pain
Cerebral signs of pre eclampsia
- Hyper reflexia and or clonus > 3 beats is a sign of cerebral irritability
- Confusion
Pre eclampsia increases the risk of
Placental abruption
- uterine tenderness or vaginal bleeding may be seen from a placental abruption
FBC results
- High Hb
- Thrombocytopenia
- Anaemia if hemolysis ( HELLP syndrome)
Coagulation screening
Prolonged
- prothrombin time
- Activated partial thromboplastin time
Biochemistry
- Increased Urate
- Increased Urea
- Abnormal LFTs
- Lactate dehydrogenase is raised ( marker for haemolysis )
- Increased proteinuria
Severe complications of Pre eclampsia
- HELLP
- Cerebral haemorrhage
- IUGR and fetal compromise
- Placental abruption
When is outpatient management appropriate?
- BP < 160/<110
- No or low proteinuria
- Difficult to distinguish from gestational hpt
Out patient management of pre eclampsia
- Warn about symptom development
- 1 - 2 week review about BP and urine
- Weekly review of bloods
Mild - moderate pre eclampsia defined as t
BP < 160/<110 Significant proteinuria (>300mg)
Management of mild - moderate pre eclampsia
- Admission
- 4 hourly BP
- 24 hour urine collection for protein
- Daily urinalysis
- Fetal CTG daily
- Regular US
- Regular blood tests
Define severe pre eclampsia
BP > 160 / >110 in the presence of significant proteinuria
Treatment of severe pre eclampsia
- Only treatment is full delivery of the placenta
Management of severe pre eclampsia
- BP stabilised with antihypertensives ( < 169/ <110)
- Per oral Nifedipine or IV labetalol for immediate management
- Maintainance therapy with Methydopa
Eclampsia
Tonic clonic seizures in association with a diagnosis of Pre eclampsia