Hypertension in Pregnancy Flashcards
Different types of HTN associated with Preg (7)
- Gestational Hypertension
- Mild Preeclampsia
- Severe Preeclampsia
- Eclampsia
- HELLP syndrome
- Chronic Hypertension: diagnosis of HTN prior to pregnancy and no protein
- Chronic Hypertension with superimposed preeclampsia –> protein in urine is diagnostic for preeclampsia
Hypertension in pregnancy is a continuum based on…..
end organ effects
How does HTN cause damage to the body? What organs end up being effects?
- Vasospasm in vasculature leads to poor tissue perfusion
- Poor tissue perfusion
- Endothelial cell damage
Organs effected: CNS, Liver, Electrolytes, Lungs, Kidneys, Placenta, Clotting
Risk factors for HTN in preggos (9)
• Maternal age <19 or >40 • 1st pregnancy • extreme obesity • Multifetal pregnancy • Chronic Kidney Disease • Chronic Hypertension • Family history of preeclampsia • DM • Underlying autoimmune disorders: ◦ Rheumatoid Arthritis ◦ Systemic Lupus Erythematous
Onset: after 20 weeks gestation
◦ 140/90 mm Hg or > on 2 different occasions; at least 4 hours apart
◦ No proteinuria
What type of HTN is this?
Gestational HTN
diagnosed w/ HTN prior to 20 weeks gestation/before pregnancy is what kind of HTN?
Chronic HTN
Onset: >20 weeks
◦ 140/90 mm Hg or > on 2 different occasions; at least 4 hours apart
-proteinuria > or =1+
What kind of preggo HTN is this?
Mild Preeclampsia
s/s client may report with mild preeclampsia
◦ Transient headache
◦ Irritability
◦ Edema
interventions for mild preeclampsia
manage at home, RN does a lot of education on notifying provider of changes
◦ increase in BP –> call provider
◦ Bedrest, daily weight
◦ Education for all HTN preg clients: side lying position to allow optimal placental perfusion
◦ Diet- avoid high sodium, alcohol, tobacco, caffeine
◦ kick count
protein in urine will occur 20 weeks or after with a client who already has HTN
What kind of preggo HTN is this?
Chronic HTN + superimposed preeclampsia
• BP 160/110 mm Hg or >
◦ Proteinuria > 3+
What kind of preggo HTN is this?
severe preeclampsia
s/s of kidney involvement with severe preeclampsia (3)
◦ Proteinuria > 3+
◦ Oliguria
◦ Elevated serum creatinine >1.1 mg/dL
POE
CNS involvement with severe preeclampsia? (2)
◦ Cerebral or visual disturbances, headache and blurred vision
◦ Hyperreflexia with possible ankle clonus (jerking) when dorsiflex foot
What kind of edema do we see with severe preeclampsia?
- pulmonary
- extensive peripheral edema
- facial edema
- dependent edema
why do you have peripheral edema with severe preeclampsia?
arterioles vasospasm –> damage in endothelium –> leakage of intravascular fluid into interstitial spaces
Does severe preeclampsia jack up your liver?
YES!
◦ elevated liver enzyme (2x normal)
◦ Epigastric and right upper-quadrant pain due to liver inflammation
What does severe preeclampsia do to your blood components? why do I care?
• Thrombocytopenia - platelets <100,000
◦ decreased ability to clot, risk of hemorrhage
Severe preeclampsia- what are the s/s ?? (BP + 6 other systems)
- BP 160/110 mm Hg or >
- Kidney involvement: ( Proteinuria > 3+, Oliguria, Elevated serum creatinine >1.1 mg/dL)
- CNS (visual disturb, ankle clonus)
- Edema (lungs, face, peripheral)
- Liver (increase enzymes/ RUQ pain)
- Thrombocytopenia
- N/V
management of severe preeclampsia?
- Managed in hospital
- Daily Weight
- I&O
- Encourage rest
Deep tendon reflex scoring? 1-4: what do they mean?
◦ 0 = no response
◦ 1+ = sluggish or diminished
◦ 2+ = active or expected response
◦ 3+ = more brisk than expected, slightly hyperactive
◦ 4+ = brisk, hyperactive with intermittent or transient clonus
Seizure precautions for preecplamsia/eclampsia include:
O2 10L/min face mask, turn on side, suction equipment, not seizure onset/duration, IV access, lights low/diminished stimulation
what are risks to fetus due to preeclampsia/eclampsia
IVGR (growth restriction), premature birth, placental abruption, fetus cannot tolerate labor due to decreased perfusion, born as still birth
What are s/s of eclampsia?
• Manifestations of severe preeclampsia
+ Onset of seizure activity or coma !!
Warning signs for possible convulsions?
◦ Frontal Headache
◦ Severe epigastric pain
◦ Hyperreflexia/ clonus
◦ Hemoconcentrations - blood components are increased
what is a normal fetal HR?
110-160
• variant of GH in which hematological conditions coexist with severe preeclampsia involving hepatic dysfunction
HELLP Syndrome
Does HELLP syndrome always occur with gestational hypertension?
no! can occur w/o it
H in HELLP stands for…
• H: Hemolysis
◦ Anemia
◦ Jaundice
EL in HELLP stands for…
• EL: Elevated liver enzymes (due to decrease blood flow –> damaged liver)
◦ Elevated ALT or AST (> 2X normal)
◦ Epigastric pain
◦ Nausea and Vomiting
LP in HELLP stands for…
• LP: Low platelets ( <100,000)
s/s of low platelets/ concerns
◦ Bleeding gums
◦ Petechiae
◦ Possibly DIC
Does HELLP occur in intrapartum or postpartum time?
BOTH
• About 1/3 of cases occur in immediate postpartum timeframe so monitor your post delivery preggos
3 antihypertensives they use in preggos
◦ labetalol, nifedipine, hydralazine
which antihypertensive can cause a false + for COOMBs test?
labetalol in my notes
methyldopa online/practice question
We don’t use labetalol in patients with which other condition?
asthma
Don’t use Magnesium Sulfate with which antihypertensive and why?
‣ nifedipine –> can cause skeletal muscle blockade –> cardiac arrest
Seizure med of choice for preggos with preeclampsia/ eclampsia?
Magnesium Sulfate
What does Mag Sulfate do?
• Depresses the CNS to prevent and treat seizures
Mag sulfate side effects to educate your preggo about?
◦ when first start, client will report feeling flush and hot initially, nauseated, sedated
◦ sedating effect , muscle weakness, headache, oliguria side effect –> will have foley cath
Very important assessment for Mag Sulfate administration or changes in administration?
Resp status
S/s of Mag Sulfate toxicity?
- CNS depression!!
◦ kidney function, if <30mL output/hour --> stop the mag (kidneys need to be able to excrete it) ◦ loss of deep tendon reflex ◦ respiratory depression (<12) ◦ bradycardia/arrhythmias ◦ Stop the infusion! notify provider
Normal, Therapeutic and Toxic levels of Magnesium Sulfate
Normal= 1.5-2 Therapeutic = 4-7 Toxic = >8
IDK if we need to know all these specifics... I thinks its too much ECG changes = 5-10 Loss of reflexes = 8-12 Respiratory Distress = 15 Cardiac Arrest = 25
Antidote for Magnesium Sulfate
• Calcium gluconate or calcium chloride
How do we admin calcium gluconate as antidote for Mag Sulfate?
◦ 10 ml/min until sxs are reversed
This was a hard section- GOOD JOB!
What is it called when a hospital runs out of maternity nurses?
A mid-wife crisis