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Chapter 33
Nervous system & autoimmune disorders in pregnancy
21
Medical
Graduate
08/21/2013

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Term
How are chronic migraines influenced by pregnancy?
Definition
50-80% of patients will improve during pregnancy
Term
Which abortive medications are preferred to treat migraine headaches in pregnancy?
Definition
Acetaminophen
Acetaminophen + codeine
Other narcotics
Magnesium sulfate
Term
How is the incidence of epilepsy affected by pregnancy?
Definition
It is not.
Term
How should anti-epileptic drugs be monitored in pregnancy?
Definition
At least every trimester. Serum-free drug levels are preferable to total serum levels, due to alterations in protein binding.
Term
How is status epilepticus treated in pregnancy?
Definition
1. Lorazepam 2mg IV + 2mg every min; max 0.1 mg/kg.
2. Phenytoin 20mg/kg slow IV push
3. General anesthesia + dexamethason, mannitol or hyperventilation to reduce cerebral edema
Term
What can seizures cause in a fetus?
Definition
Spontaneous abortion
Premature labor
Fetal bradycardia
Term
Fetal hydantoin syndrome is comprised of what?
Definition
Mental retardation
SGA
Craniofacial anomalies
Limb defects
Term
How common is fetal hydantoin syndrome?
Definition
3-5%, 8-15% with careful assessment in first 3 years of life.
Term
What is the overall (major) malformation rate of:
A. Valrpoic acid?
B. Phenobarbital?
C. Carbamazepine, phenytoin, lamotrigine?
Definition
A. 10.7%
B. 6.5%
C. 3%
Term
How is MS (multiple sclerosis) affected by pregnancy?
Definition
The rate of exacerbation is not influenced by pregnancy, but is increased in the 3 months post-partum.
Term
How should the treatment of MS be altered in pregnancy?
Definition
Women planning to conceive should be switched from IFN to glitramer, which should then be stopped altogether once pregnancy is established.
Term
How is the course of myasthenia gravis affected by pregnancy?
Definition
1/3 of patients improve
1/3 deteriorate
1/3 remain unaffected.
Term
What are the three possible effects of myasthenia gravis on the fetus/neonate?
Definition
1. Transient myasthenia gravis in the newborn - 12-15%
2. Arthrogryposis multiplex congenita
3. Pulmonary hypoplasia and polyhyrdramnios
Term
How is treatment of myasthenia gravis changed in pregnancy?
Definition
It is not, except for dose adjustments.
Term
How is the course of RA (rheumatoid arthritis) affected by pregnancy?
Definition
Approximately 75% of patients experience improvement of symptoms.
Term
High levels of Ro (SS-A) and La (SS-B) antibodies are associated with which fetal defect?
Definition
Complete heart block
Term
What are the risks in pregnancy for a patient whose SLE was not active in the past 6 months?
Definition
2- to 3-fold risk of superimposed preeclampsia and IUGR
20% chance of lupus flare
Term
What are the risks in pregnancy for a patient with active SLE?
Definition
Superimprosed preeclampsia (60-80%)
IUGR
Preterm labor
Lupus flare (50-80%)
Term
What are the diagnostic criteria for APS?
Definition

A clinical event AND one of: positive lupus anticoagulant, moderate- or high-titer anticardiolipin Ab, anti-β2 glycoprotein 1 Abs.

Serologies should be positive on 2 occasions, at least 12 weeks apart.

Term
What prophylactic treatment should be given to women with APS?
Definition
Baby aspirin and heparin
Term
What is the mainstay of treatment of SLE in pregnancy?
Definition
Corticosteroids
Hydroxychloroquine
Azathioprine
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