Status Epilepticus Treatment Guidelines

5/1/06

ADVOCATE HOPE CHILDREN’S HOSPITAL
 
STATUS EPILEPTICUS
 
Step 1: Stabilize the Patient
 
¨      Ensure patient’s airway: Oral airway available, turn head to one side and keep limbs of opposite side free for possible lateral prone position if vomiting or not handling secretions.
¨      Monitoring: HR, RR, SaO2, BP, cardiac rhythm, and body temperature. Provide oxygen by nasal cannula or facemask.
¨      Establish IV access: IV or IO
¨      Use rectal route as an option to administer: Benzodiazepines, valproic acid
¨      Consider elective intubation if the patient develops neurogenic respiratory depression with hypoventilation or significant distress/hypoxemia secondary to aspiration, in the event of raised ICP or hypothermia.
 
Step 2: Control of Seizure Activity
 
¨      Initial drug therapy:
 
         Lorazepam 0.05-0.1 mg/kg IV/IO. Can repeat after 5 minutes for a total of 3 doses. Can consider initial rectal administration at same doses as IV administration or
         Diazepam 0.2-0.3 mg/kg IV/IO
                               0.5 mg/kg PR if no IV/IO - or
         Midazolam - useful as first line therapy when no IV/IO access can be given. IM, nasal, rectal oral:          0.1 mg/kg IM
0.4 mg/kg nasal
0.5 mg/kg oral
 
¨      Concomitant with benzodiazepine infuse:
 
         Fosphenytoin 20 mg/kg, IM or IV, can be given IM if no IV, and can be given rapidly → consider if no IV/IO access or if patient is in stage II (decompensated) of status epilepticus.
         Phenytoin 20 mg/kg (IV) in 0.9% NaC1 solution at a rate not faster than 1 mg/kg/minute while monitoring ECG and BP.
         Phenobarbital (IV) 20 mg/kg in newborns, patients with cardiac conduction abnormalities, failed Phenytoin therapy.
 
¨      Immediate diagnostic investigations:
 
         CBC/differential
         Glucose → one touch confirmed by serum level
         Electrolytes (serum), calcium, magnesium
         Bun & creatinine
         Toxicology screen
         Anticonvulsant levels if indicated
         UA and appropriate cultures if indicated
         LP searching for infections if necessary. It should be deferred until seizures have ceased and the patient is hemodynamically stable.
         CT scan: if considered, it should be done as soon as possible if intracranial bleed or increased ICP is suspected, or it should be deferred until status is controlled and a normal respiratory pattern is established. If there are no genuine respiratory indications, a child should not be intubated for transfer for a CT of the head.
 
Step 3: Refractory Status
 
¨      Admit to PICU
¨      Endotracheal intubation might be required.
¨      Continuous monitoring of vital functions, low threshold for intubation to ensure airway protection and adequate gas exchange.
¨      Drugs
 
         If patient received 20 mg/kg of Phenytoin, infuse 10 mg/kg IV more, if no response, infuse Phenobarbital 20 mg/kg rate faster than 100 mg/minutes.
         If patient received Phenobarbital 20 mg/kg initially, consider repeating 5 mg/kg IV x 1. If patient doesn’t respond and continues to seize, administer Midazolam 200 mcg/kg bolus followed by a continuous infusion starting at 0.75 mcg/kg/minute and increasing as necessary up to 11 mcg/kg/minute.
 
Other options to consider if status still refractory:
 
         Pentobarbital coma: 10 mg/kg IV loading dose given slowly over 1-2 hours, monitoring BP closely. Then start maintenance infusion at 1 mg/kg/hour, and increase to 2-3 mg/kg/hour to attain burst suppression on EEG.
         Propofol continuous infusion 50-100 mcg/kg/minute
         Ketamine continuous infusion, starting at 1 mg/kg/hour
         General anesthesia: Halothane, Isoflurane
 
¨      Addendum
 
For treatment of tonic, myoclonic and atypical absence status epilepticus → IV benzodiazepines followed by rectal/NG tube valproate. Loading dose 20 mg/kg per rectum/NG tube.

 

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