11. Medical Conditions in Pregnancy Flashcards
Anemia:
- Physiologically, anemia is _________.
- Most common reason for anemia?
- Screening
- Treatment
*
- ↓ in Hgb/hematocrit during pregnancy (Hct <30% or Hgb concentration is <10g/dL)
- Iron deficiency
- Screening
- At prenatal visit
- 26-28 weeks
- Treatment: IV/oral Iron supplement
Gestational DM
- What is it?
- Screening
- Glucose intolerance during PG
- Screening
- 24-28 weeks: perform a 1-hour 50g oral glucuse challenge test
- If 130-140 => abnormal
- => 3-hour 100 g oral glucose challenge test.
- If (2+ abnormal values) => FAIL.
Risk factors for Gestation DM
- Obesity
- Previous hx of GDM
- Strong family hx of DM
- Known glucose intolerance
Maternal Complications of Gestational DM
↑ risk of:
- Gestational HTN
- Preeclampsia
- C-section delivery
- Developing DM later in life
Fetal Complications of Gestational DM
- Macrosomia
- Neonatal hypoglycemia
- Hyperbilirubinemia
- Shoulder dystocia
- Operative delivery (bb is extracted from vagina w forceps)
- Birth trauma or stillbirth
Antepartum management in Gestation DM
- Diabetic teaching
- Monitor blood glucose
- Test fetal health weekly (biophysical profile and/or NST)
- US to determine weight
In a patient with gestation DM, when is it recommended to have the bb via c-section?
If in US, fetal weight is > 4500 grams.
If all testing, growth and glycemic control are good in a person with Gestational DM, the baby can be delivered via _______
Spontaneous labor/wait until due date.
Intrapartum (DURING childbirth) Managment of Gestation DM
- If diet controlled => monitor blood glucose.
- If on meds (oral or insulin) => monitor glucose hourly (80-120 mg/dL) or insulin drip
- Continous fetal monitoring in labor
Direct link between birth defects = ____________.
↑ HgBA1C during embryogenesis
=> Increase risk of congenital anomalies
Maternal Complications Pre-Gestational DM
- Worsening nephropathy and retinopathy
- Risk of developing preeclampsia
- Greater risk of DKA
Fetal Complications Pre-Gestational DM
- ↑ risk of SAB
- Anatomic birth defects (sacral agenesis, and cardiac)
- Fetal growth restriction
- Premature
What are the 2 classes of Gestational DB?
- Class A1: Gestational DB (diet controlled)
- Class A2: Gestational DB (insulin or oral-meds controlled), exists before PG
What is considered good glycemic control during pregnancy when fasting and 2-hours after eating?
- Fasting= less than 95 mg/dL
- 2 hour postprandial (2 hours after eating) = less than < 120 mg/dL
Management of pre-existing DB right before childbirth (antepartum)
- Every trimester: 24 hour urine collection
- 1st trimester: Ophthalamic- eye exam
- EKG
- Check glucose and HgBA1c levels daily using finger stick
How do insulin requirements change after delivery of the placenta and onward?
- Insulin requirements drop significantly after the placenta = only need 2/3 of dose
How soon postpartum should a 2-hour glucose tolerance test be performed in mother who had GDM?
6-12 weeks post-partum to look for pre-existing disease
Maternal Hyperthyroidism
- Diagnosed
- Treatment (when are they given and AE)
- ↑ free T4 and suppressed TSH (dx based on sx is hard bc similar to PG)
- Treatment:
-
PTU (propylthiouracyl) and methimazole
* PTU (1st trimester) only bc ↑ risk of liver toxicity
* Methimazole (2nd/3rd trimester) bc ↑ risk of aplasia cutis and choanal atresia in 1st.
-
PTU (propylthiouracyl) and methimazole
Which drug for maternal hyperthryroidism is contraindicated throughout pregnancy?
Radioactive iodine
Fetal effects due to Maternal Hyperthyroidism
- Meds cross placenta => cause fetal hypothyroidism and fetal goiter
- Prematurity, IUGR, preeclampsia, and stillbirth
Thyroid storm => life-threatening condition that is associated with untreated or undertreated hyperthyroidism
- Triggers
- Signs and sx
- Maternal mortality = ___%
- Triggers: infections, labor/c-section, not taking meds
-
Signs and sx:
- Tachycardia
- Hyperthermia and perspiration
- High-output cardiac failure
- Maternal mortality = 25%
Tx of Thyroid Storm during pregnancy?
- Dexamethasone (stops conversion of T4 –> T3)
- PTU (stops making thyroid hormone)
- Propranolol
- Sodium iodide (blocks secretion of thyroid hormone)
What are the pregnancy outcomes of treated vs untreated hypothyroidism?
- Treated => NL outcomes
-
Untreated => ↑ risk of
- SAB or stillbirth
- LBW bb
- Preeclampsia
- Abruption
- Lower IQ—cretinism
Maternal Hypothyroidism
- Treat
- Monitor
- Treat: levothyroxine (thyroid replacement)
- Monitor: check free T3/4 and TSH monthly
Neonatal thyrotoxicosis
- How does it develop
- How long does it last
- Mortality rate
- Thyroid stimulaing Abs are transferred to baby via the placenta.
- Effects:
- Lasts 2-3 months (transient)
- Mortality rate of 16%.
Neonatal hypothryoidism
- Causes:
- Effects:
- Thyroid dysgenesis, inborn errors of thyroid function, drugs
- Generalized developmental retardation
Which pulmonary condition is a contraindication to pregnancy due to decompensation during pregnancy and a high mortality rate?
Primary pulmonary HTN
_________ = preferred anesthesia in patient with primary pulmonary HTN.
Epidural, allowing vaginal delivery to be an option.
What is the most common lesion caused by rhematic heart disease?
Mitral stenosis
What are the most common cardiac arrhythmias in pregnancy; which are most worrisome?
- SVT = most common and usually benign
- A. fib/flutter = more worrisome for underlying cardiac disease
Who is at greatest risk of developing postpartum cardiomyopathy?
Women with
- Preeclampsia
- HTN
- Poor nutrition
Postpartum cardiomyopathy
- When does it develop?
- Mortality rate?
- Last weeks of pregnancy or 6 months postpartum
- 10%
What is important to note about ALL PREGNANT CARDIAC PATIENTS?
Co-managed with a cardiologist.
How should cardiac patients be delivered?
Vaginally, unless obstetric indications: DON’T push in 2nd stage of delivery.
What type of cardiac condition is a medical emergency?
Acute cardiac decompensation w/ CHF
Immune Idiopathic Thrombocytopenia
- What is it?
- How does neonatal thrombocytopenia develop?
- Ig attach to moms platlets
- Neonatal thrombocytopenia develops when anti-platelet AB go to bb via placenta.
What is treatment for immune idiopathic thrombocytopenia during pregnancy?
-
- Begin after platelets <50,000 —> give prednisone
- If severe, => IV immunoglobulin
- Platelet transfusion
- Splenectomy
Antiphospholipid syndrome
- What is present?
- Can coexist with _____.
- Associated with: __________
- Treatment during pregnancy
- Lipid anticoagulants and anticardiolipin AB
- SLE
- Arterial/venous thrombrosis
- Treatment:
- Heparin/LMW heparin/ low-dose ASA
- If history of thrombosis => full anti-coagulant
What are the 3 types of Acute Renal Failure seen in pregnant patients?
Treatment goals of each?
-
Pre-renal: causes acute blood/fluid loss
- Restore volume (electrolytes!!!)
-
Renal: d/t prexisting disease (lupus nephritis) or a hypercoagulable state)
- Prevent more damage (diuretics, fluid restriction)
-
Post-renal: rare; kidney stones
- Remove obstruction (lay left lateral position)
Which serum Cr level worsens the prognosis of chronic kidney failure during pregnancy?
Serum Cr. > 1.5 - 2
What is asymptomatic bacteriuria more likely to cause in pregnancy?
Cystitis and pyelonephritis —> due to urinary stasis and glucosuria
Culprit for causing Asymptomatic Bacteruria
E.coli
Increased risk for what complications if pregnant woman has pyelonephritis?
- ↑ uterine contractions and preterm labor
- Can result in adult respiratory distress syndrome
Treatment of N/V in pregnancy, which is most common in 8-12 weeks.
- Vit B6
- Doxylamine
- Promethazine
What is hyperemesis gravidarum?
Persistent N/V assoc. with >5% loss of pre-pregnancy weight + ketonuria + dehydration
What is treatment for hyperemesis gravidarum if severe (fails all conservative measures)?
May need nasogastric feeding or parenteral nutrition
What is Mendelson’s Syndrome and what complications can it cause?
- Acid aspiration syndrome that is more common in pregnant people because they have delayed gastric emptying and ↑ intra-abdominal pressure/intra-gastric pressure
- Complications: adult respiratory distress syndrome (ARDS)
Treatment for Mendelsons Syndrome (acid aspiration)
- Supp O2
- Maintain airway
- Tx for acute respiratory failure
Intrahepatic cholestasis of pregnancy
- What is it?
- Effects on mom and fetus?
- Cholestasis and pruritis that occurs in 2nd half of pregnancy
- Mom (benign); fetus (meconium stained amnoitic fluid and fetal demise)
Intrahepatic cholestasis of pregnancy (ICP)
- Sx
- Tx
- Sx: itching without abdominal pain or rash
- Tx:
- Cold baths/ bicarb washes
- Ursodeocycholic acid
- Watch fetus and deliver early (36-37 weeks)
What liver disease is REALLY SCARY?
Acute fatty liver of pregancy => can cause liver failure
What is treatment for acute fatty liver of pregnancy?
- Termination of pregnancy –> need to tx the Mom
- Supportive care —> IV fluids w/ 10% glucose; replace blood products (FFP and cryoprecipitate)
What is the maternal and fetal mortality with Acute Fatty Liver of Pregnancy?
- Maternal = 7-18%
- Fetal= 9-23%
What is the most common type of HA in pregnancy?
How is it treated?
Tension HA
Acetaminophen
Due to pregnancy being a hypercoagulable state there is a 5-fold increase in venous thrombosis and the greatest risk is when?
- First 5 weeks postpartum
Superficial thrombophlebitis is most common in pregnant pt’s with what characteristics;
- MC in the _____, which ______ risk of PE
- Most common in those w/ varicose veins, obesity and little physical activity
- Most common in calf => NO inc risk of PE
Superficial Thrombophlebitis
- Sx
- Treatment
- Sx: swelling and tender
-
Treat:
- bed rest, pain meds, local heat, NO anticoag, support hose
DVT’s during pregnancy most commonly occur in which leg and what are the signs/sx’s?
- More common in LEFT leg
- Pain in the calf w/ dorsiflexion (Homans sign)
- May also have dull ache, tingling, or pain w/ walking
If patient has DVT, what values should you follow if you give LMW lovenox vs. unfractionated heparin to assure therapeutic levels?
- aPTT values => heparin
- Factor Xa values => lovenox
When should coumadin be used during pregnancy for DVT’s?
6 weeks postpartum but NOT during pregnancy due to risk of fetal hemorrhage or teratogenesis
Diagnosis of DVT in pregnant patient
- Difficult to dx because 50% are asx
- Compression US + doppler
- If suspect pelvic thrombosis => MRI
Why is treatment of a PE supppper important?
- Treat early = 1% of dying
- Untx = 80% of dying
PE is most often due to _____
DVT
What are sx’s of PE during pregnancy?
- Pleuritic chest pain
- Shortness of air/ air hunger
- Palpitations
- Hemoptosis
What 5 things used for diagnosis/evaluation of suspected PE?
- EKG
- CXR
- ABG’s
- VQ scan
- HELICAL CT
ALLLLLL pregnant pt’s with DVT or PE require what?
Thrombophilia work-up, which includes
- Lupus anticoagulant
- Anticardiolipin antibody
- Factor V leiden
- Protein C /S
- Antithrombin III
- Prothrombin G20210A
Pregnant person presents with a history of thromboembolism, what do we do?
Give them a prophylactic anticoagulant
What is the most common pulmonary disease in pregnancy?
Asthma
If pregnant patient w/ asthma has been using daily inhaled steroids or high potency oral for more than 3 weeks what is done during labor and delivery?
Stress dose of IV steroids to prevent adrenal crisis
All anti-epileptics have teratogen risk, but what 2 are most commonly used during if pregnancy if needed?
Avoid what>
- Dilantin
- phenobarbital
Avoid: Valproate
What is the course of asthma during prengnacy?
Variable: 1/3 improve; 1/3 worsen; 1/3 stay the same
Severe asthma is associated with what complications? (5)
- Miscarriage
- Preclampsia
- Intrauterine fetal demis
- Intrauterine fetal growth restriction
- Preterm delivery
Treatment of asthma in PG vs nonpregnant pt
same
SEIZURES
- How does the frequency change when PG?
- If on anti-epileptic, should also be on ______
- How does labor and delivery change?
- does not
- folic acid (1-4 mg)
- does not ; dec anti-epleptic dose after surgery
*
- Avoid taking antidepressants in ____ trimester.
- If used in ___ trimester => greater risk of neonatal withdrawal
- Post-partum depression is a concern if baby blues persists for ____ after birth
- 1st
- 3rd
- 2 weeks