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14 Cards in this Set
- Front
- Back
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Why would maternal dehydration cause fetal tachycardia?
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Maternal CO drops with dehydration so her heart rate will increase to compensate, so will the baby's
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Why would you be very cautious giving pain meds to a pt with EFM showing low variability?
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Pain meds will decrease variability and this fetus is already low
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What are you thinking if EFM has absent variability?
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CRAP!!! this is non-reassuring and you cannot rule out fetal acidosis
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Incidence of seizures
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Risk of having a seizure at some point in your life is 10%
70% of new cases have no identified cause |
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Incidence of epilepsy
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highest at < 2yo or > age 65, males > females, minorities > caucasians
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Sodium and seizures
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Any alteration in sodium channel can result in a seizure, but more likely when sodium is very low
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Calcium and seizures
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Extracellular calcium is what is needed to activate a seizure
Inclux of Ca through T channel leads to the generation of electrical current, certain neurons in the hypothalmus have T currents large enough to cause action potential firing |
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GABA and seizures
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GABA is a widely distributed inhibitory NT with the job of calming activity around the electrical impulse so it doesn't spread.
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What are the most frequent known causes of seizures?
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Head trauma
Brain tumor and stroke Poisoning Infections Maternal injury Some women have premenstrual seizures |
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Is a client breathing during the tonic phase of a seizure?
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NO! 10-30 seconds, cant breath b/c diaphragm muscle has contracted
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Why is status epilepticus a medical emergency?
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b/c the brain is not getting all the O2 it needs --> brain injury or death, person also becomes acidotic. Risk increases with longer seizure
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What will you give to treat status epilepticus?
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Benzo's (ativan or valium) by slow IV push to activate GABA receptors and calm the brain
Bolus IV anticonvulsant and then intermittent doses |
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***Antiseizure meds work in what 3 ways?***
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1. Suppress sodium
2. Inhibit calcium 3. Potentiate GABA |
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What might happen if dopamine is antagonized?
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may initiate a seizure
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