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53 Cards in this Set
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Partial seizure DOC (drug of choice) |
Carbamazepine, also phenytoin & phenobarbital
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Absence seizure/petit mal DOC
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ethosuximide (Zarontin), also clonazepam
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Grand mal seizure/tonic-clonic DOC
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Carbamazepina (tegretol) phenytoin, phenobarbital, also valproic acid, topiramate (topamax), adjunt Lamotrigine (lamictal). Extreme cases Felbamate
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Atonic seizure DOC
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Valproic Acid, also Clonazepam, Lamotrigine (adjunt)
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Lenox-gastuat syndrome DOC
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Valproic Acid, Clonazepam
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Lenooux-gastuat syndrome > 30 minutes TTO
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inminent CNS damage. 100 mg thiamine complex, 25 g glucosa (50 ml 50%) Diazepam IV 10-20 mg 2-5 min, Phenytoin 18 mg/kg to reach therapeutic levels, but less than 50 mg/min or cadiac risk (propylen glycol)
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Seizures drugs discontinuation
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Slow over 6 weeks to 3 month, or risk of status epilepticus
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Drugs that may cause seizures
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wellbutrim (bupropion)alcohol, cocaine, theophylline in high doses, lidocaine, meperidine(demerol), diazepam, tramadol, meropenem carbopenem, meropenem, ganziclovir, penicillin, ROH and barbituric withdrawal
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Phenytoin (Dilantin)IM?
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No, slow, erratic absortion, painful local reaction. Use cerebyx instead IM, IV.
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Cerebryx drug, via of administration, storage and type of drug
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Fosphenytoin, IV, IM, REFRIGERATE and prodrug
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Patient counceling with phenytoin and fosphenytoin
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Take it with food or milk to avoid GI symptoms, good dental care (gingival hyperplasia), do not take a discolored capsule
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DOC to prevent seizure
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Phenytoin
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Phenytoin dose, loading dose, therapeutic range, IV caution. Pharmacology
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4-6 mg/kg/day TID or Kapseals QD, 18 mk/kg, 10 - 20 mg/liter. no more that 50mg/min, only with normal saline use filter. Dose dependent First order kinetic first order to 0 order (dose dependent)
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Funnytoin Adverse effects
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gingival hyperplasia, NAGS (nistagmis, ataxia, GI, sedation, osteomalacia(vitamin D deficiency)
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Phenytoin drug interaction
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Fluconazole, omeprazole, cimetidine increase phenytoin toxicity. Disulfiram increase phenytoin effect. Phenytoin decrese contraceptive and corticosteroid (dexamethasone)effects
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Valproic Acid drug, brand name, indication
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depakene, tto absence and complex partial seizure
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Divalproex sodium brand name, indication
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Depakote EC (enteric coat), FDA approved for Mania (bipolar, and Migrain)
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Valproic Acid, Divalproex sodium side effects
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Hepatotoxicity, pancreatis,bone marrow problems(trombocitopenia, anemia, neutropenia) hair loss, weight gain
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Seizure drugs with possible hepatic complication
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valproic acid, carbamazepina, phenytoin
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Seizure drugs with possible renal complication
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Neurontin (gabapentin), Topamax (topiramate) Keppra (levetiracetam)
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drugs that will decrece valproic acid (substrate) levels
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carbamazepine, phenobarbital, phenytoin
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Depakote EC drug interactions
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Antiacids will increase stomach pH and will disolve the enteric coat faster
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Valproic acid: substrate or inducer?
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Substrate
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Carbamazepine brand name, dose & pharmacology
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Tegretol, 100 -200 mg QPm blood levels fall in 2-4 weeks (autoinducer)
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Carbamazepine adverse effects
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AAAA: aplastic anemia, agranulocitosis, antiarrithmic, anticholinergic. NAGS:Nistagmis, ataxia, GI, sedation.
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Carbamazepine drug interaction
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Drugs that will increase CBZ(carbamazepine):erythromycin, clarithromycin, ketoconazole, itraconazole, diltiazem, verapamil, norvir (ritonavir). Reduce effects of contraceptives
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Seizure medication that may cause kidney stones
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Zonisamide (Zonegran) and Topiramate (Topamax)
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Seizure medication that may cause weight loss
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Topiramate (topamax)
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Seizure medication that may cause weight gain
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All but topiramate (topamax)
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Seizure medication that goes thru the liver
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All but gabapentin and levetiracetam (keppra)
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Seizure medication that goes thru kidneys
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Levetirocetam (keppra) and Gabapentin (neurotin). Renal Failure
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Felbamate indications
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ONLY ON PATIENT WITH NO RESPONSE TO OTHER THERAPIES. LIVER
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Felbamate Side effects
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Aplasic anemia and Hepatoxicity, liver failure
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Gabapentin loading dose and dose. Indication
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start with 100 mg TID increase until effects reached. 900 - 4800 mg daily. Partial seizures adjunt. RENAL
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Lamotrigine brand name and side effects
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Lamictal, rash and photosensitivity
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Lamotrigine and valproic acid
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Valproic acid is an inducer of lamotrigine, so we have to lower the dose to a 100 -200 mg qh when administer with valproic acid. LIVER
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Levetiracetam brand name, side effects
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Keppra, somnolence and psychiatric symptoms
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topiramate brand name, side effects, counceling
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Topamax, Nephrolithiasis (kidney stones), weight loss (anorexia). don't brake pill (bitter taste) drink lots of water (kidney stones)
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Carbamazepine & tricyclics antidepressants
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They are related in terms of structure, so patients allergics to tricyclics antidepressants may be allergic to carbamazepine
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If a pregnant woman in epileptic and is taking valproic , what should she use to avoid congenital malformations on her baby
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Folic acid, because anticonvulsivants normally reduces folic acid, and this is a major cause of spina bifida
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Topiramate & weight
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Topamax (topiramate) can cause significant weight loss (anorexia)
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Valproic acid & weight
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Depakene can cause significant weight gain
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Rash and Seizure medications
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All of the anticonvulsivants are assoicated with life threatening rash.
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Carbamazepine drug interactions
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Because it is an inducer it has a lot of drug-drug interactions
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Anti-seizure medications with black box warning
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carbamazepine and felbamate (aplastic anemia and hepatic failure)
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absence seizure medication for a 1 year old baby
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Ethosuximide (zarontin)
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Complex febrile seizures duration and complications
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Last for >15 min recurrent in 24 hours and do not have any consecuenses like epilepsy
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Meperidine & renal failure
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Meperidine accumulates in patients with renal failure and causes seizures
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Wich drug has Michaelis-Menten parmacokinetics
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Phenytoin, because of its dose, goes from first order kinetis to 0 order kinetics
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Drugs that decreaces phenytoin
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Antiacids, cisplatin, ritonavir(norvir), zodovudine, kava kava and valerian
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Drugs that increases phenytoin
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alcohol abuses, diaepam, estrogens, salicilates, sulfas, warfarin.
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Phenytoin and weight
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Phenytoin do not have a effect on patients weight
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Primidone is a metabolite of...?
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Phenobarbital
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