Hypertensive Disorder in pregnancy _ ساجده الربيعي Flashcards
what’re the hypertensive disorders in pregnancy ?
1- chronic hypertension 2- Gestationl hypertension 3- preeclampsia 4- eclampsia 5- Heelp syndrom
whats the chronic hypertension ?
increase in the blood pressure about (140/90)
Before 20 week of gestation
or it persistent hypertension 12 week after the delivery
what’s the gestational hypertension ?
when the blood pressure increase (more or equal 140/90) after 20 week without proteinuria and the BP will return to normal after 12 weeks of delivery
pt with Gestational hypertension can develop preeclampsia ?
yes , half of pt with gestational HT develop preclampsia
what’s the superimposed preeclampsia ?
when the pt have chronic HT and develop preeclampsia
(preeclampsia means have high BP with proteinuria after 20 weeks )
BP is 140/80 which is mild or 160/100 is sever before 20 week
Proteinuria more or equal 300mg/24 h after 20 week
+ with some decrease amount in the pallet because of the destruction less than 100,000/cmm
what’s the definition of the preeclampsia ?
(high BP(140/90) with proteinuria (>=300) after 20 week with or without edema )
but everything should return to normal after 12 week of delivery
what’s the eclampsia ?
preeclampsia signs
(high BP + proteinuria after 20 weeks )with coma and seizure during the pregnancy or postpartum
but the pt shouldn’t have any previous neurological disorders
what’re the risk factor of the preeclampsia ?
maternal cause -------------------------- 1- happen in nulliparity 2- advance age 3- obesity BMI >35 double the risk 4-hypertension 5-diabetes 6-thrombovascular disease
7- previous history of the preeclampsia
8- family history of preeclampsia
9- history of placental abroption ,IUGR, fetal death
10- non hispanic black raceالعرق الاسود غير اللاتيني
11- father may be cause of this by limit exposure of the paternal sperm
12- when the HCG is high in molar pregnancy and twins
13- smoking prevent from the preeclampsia
what’s the theory for the preeclampsia ?
its unknown mechanism
normal there will be trophoblast invasion that lead to vasodilation more nutrient to the baby
but if failure of the trophoblast invasion and lead to release of inflammatory mediatory by
decrease the PGI2 and increase the TXA2 which lead to vasoconstriction ,platelet aggregation , increase the vasopressor response(is a physiological nervous system response to increased intracranial pressure (ICP) ) & increase the uterine activity
1- abonormal placentation
2- inflammatory mediators as high TXA2 and low PGI2
3-Genetic
from family history by mutation in the complement
regulatory protein gene
4- Immunological
-as exposure of sperm from different partner
but when expose to paternal antigen in sperm of same gene is protective
- active antibody to Angiotensin receptor 1(AAAT1)
which activates AT1 receptors increase the sensivity to angiotensin and lead to hypertension
What the risks of the preeclampsia ?
Maternal risks -------------------------- 1- CNS problem as seizures and stroke 2-renal failure 3- hepatic failure or rupture 4-DIC (Disseminated intravascular coagulation) 5- CS 6- death
Fetal risks ------------------ 1- prematurity 2- IUGR 3- oligohydraminos 4-placental infract 5-placental abroption 3- uretroplacental insufficiency 4- prenatal death
whats happen to the blood picture to pt with preeclampsia ?
because the inflammatory mediators lead to vascular damage this lead to fibrosis so the blood component will destruct so the pt will have
- high hematocrit (but if pt with anemia have normal hematocrit )
- decrease the WBC thrombocytopenia
- low platelet count (numbers correlate to the severity and abruption of the placenta )
-DIC due to the activation of the coagulation
or because over consumption of the coagulant lead to spuntaous heamorrge
what’s happen to the liver in the preeclampsia ?
1- hellps syndrom ( is a complication of pregnancy characterized by hemolysis, elevated liver enzymes, and a low platelet count.)
2- periportal heamorrhge
3- sub capsular bleeding
4- hepatic rupture __32% lead to mortality
what’s happen to the kidney in preeclampsia ?
decrease the GFR lead to -oliguria - renal failure - uric acid and creatinine will elevated in the serum will the albumen will decrease
- proteinuria
what’s the effect of the preeclampsia on the uteroplacental circulation ?
- lead to uteroplacental insufficient
-fetal complication as
1- hypoxia
2- IUGR
3-prematurity
4- placental abruption
what’s the symptoms and the signs of the preeclampsia ?
preeclampsia is sign disease
- high PB
- proteinuria (kidney)
- edema of the face and hands
- headache (CNS vascular damage Become leaky and lead to brain edema )
- Exaggurated reflexes (CNS)
- blurred vision
- epigastric pain (liver )
what’re the preventive measures of the preeclampsia ?
1- Regular Antenatal checkups
- see the weight if rapid gain
- check PB
- check for edema
- liver na renal function test for proteinuria
2- Give the pt some of supplement as
- low dose of acorn in high risk group to increase the prostaglandin and decrease the TXA2
- calcium supplement
- Vit C & A as antioxidant
- zinc , mg , fish oil , low slat diet