{"id":5128,"date":"2011-07-14T20:23:43","date_gmt":"2011-07-14T20:23:43","guid":{"rendered":"http:\/\/crashtext.org\/misc\/5128.htm\/"},"modified":"2013-05-11T19:28:58","modified_gmt":"2013-05-11T23:28:58","slug":"seizures-status-epilepticus","status":"publish","type":"post","link":"https:\/\/crashingpatient.com\/medical-surgical\/seizures-status-epilepticus.htm\/","title":{"rendered":"Seizures and Status Epilepticus"},"content":{"rendered":"
Treatment of refractory Status Ep<\/a><\/p>\n EEG evidence of seizures was associated with worse outcome and mortality in children (CCM 2013;41:215)<\/p>\n 10 mg IM midazolam was not inferior to 4 mg IV lorazepam (N Engl J Med 2012; 366:591-600<\/span>)<\/p>\n Poor man’s EEG is pupillary response to light.<\/p>\n Check thyroid, ask about trauma<\/p>\n Syncope can present c twitching<\/p>\n Ictal-retrograde amnesia, incontinence, tongue biting<\/p>\n Postictal (Todd\u0092s) paralysis-as long as 24 hrs<\/p>\n Neurogenic Pulmonary Edema-from sympathetic discharge-often confused c aspiration<\/p>\n Posterior Shoulder Dislocation<\/p>\n CT Scan for 1st time seizure<\/p>\n Prolactin levels will peak at 20 minutes after seizure and return to baseline in60 minutes.<\/p>\n <\/p>\n Trick of the Trade from Bryan Hayes:<\/b> Supporting Data for Single Dose<\/b><\/p>\n If you’re still uncomfortable giving a large single dose, there is also support for two-dose oral loading (which still cuts 2 hours off the ED stay compared to 3 doses).<\/b><\/p>\n <\/p>\n <\/p>\n rapid oral loading of carbamazepine (Ann emerg med 2007;50:121)<\/p>\n <\/p>\n Status-serial seizures without\u00a0 consciousness or >30 min of continuous activity<\/p>\n <\/p>\n Treatment<\/p>\n Benzodiazepines are first line therapy<\/p>\n Lorazepam .1 mg\/kg given ~2 mg\/min will have onset in 3-5 minutes and last hours<\/p>\n Diazepam .2mg\/kg given ~ 5mg\/min will have onset in ~1 minute but lasts only about ~20 min for antiseizure activity<\/p>\n Midazolam<\/p>\n <\/p>\n Valproic acid has recently been made available in an intravenous preparation. The average dose is 10-15 mg\/kg but a 20 mg\/kg load has been safely used. Although not yet approved for this use in the United States, intravenous valproic acid can successfully treat convulsive status epilepticus.<\/p>\n <\/p>\n <\/p>\n Benzos- Fosphenytoin- Phenobarb- Pentobarb- Isoflurane<\/p>\n Phenobarb 100 mg boluses until seizure stops<\/p>\n Non-convulsive Status is cause of AMS and can continue post seizure, get EEG<\/p>\n Gelastic Seizures from lesions in temporal or hypothalamus.\u00a0 Differential diagnosis of pathological laughter is also stroke and tumor<\/p>\n <\/p>\n Seizures can present with peri-ictal (non-convulsive status) and postictal psychosis or behavior change<\/p>\n <\/p>\n B6 for Isonazid Overdoses 5 grams or more<\/p>\n Patients with strychnine poisoning may develop seizure-like activity yet demonstrate normal mental status<\/p>\n <\/p>\n get drugs of abuse screen for cocaine and serum for TCA<\/p>\n <\/p>\n that old lady twitching their finger may still be having tonic\/clonic seizure, but they have just fatigued their twitching to the point that only small movement is left.<\/p>\n <\/p>\n Sinai Protocol<\/p>\n Ativan 4mg x2 Q5 minutes<\/p>\n Fosphenytoin 20 mg\/kg IV at 150 mg\/min<\/p>\n May give additional 10 mg\/kg of Fosphenytoin<\/p>\n or IV Valproate 40 mg\/kg over 10 minutes may give additional 20 mg\/kg<\/p>\n or IV Midazolam 0.2 mg\/kg then repeat 0.2-0.4 mg\/kg boluses Q 5 minutes. Max load 2 mg\/kg. Then start 0.1 mg\/kg\/hr; dose range 0.05-2 mg\/kg\/hr<\/p>\n or IV propofol load 1 mg\/kg repeat 1-2 mg\/kg Q 3min until seizures stop max load 10 mg\/kg. Start at 2 mg\/kg\/hour dose range 1-15 mg\/kg\/hr<\/p>\n or Phenobarb 20 mg\/kg at 50-100 mg\/min<\/p>\n then IV pentobarb 5-10 mg\/kg at 50 mg\/min repeat 5 mg\/kg until seizures stop. rate 1 mg\/kg\/hr range 0.5-10 mg\/kg\/hr.<\/p>\n <\/p>\n Fosphenytoin is a phosphate ester of phenytoin that became available in 1995. It has a safety profile that makes it preferable to phenytoin in certain situations<\/p>\n Fosphenytoin has a peak serum level within approximately one of hour of intramuscular administration and at six minutes after intravenous loading. When ordering fosphenytoin, the physician should use the terminology of “phenytoin equivalents” (PE) to avoid confusion. Thus, the routine loading dose is 18 phenytoin-equivalent units\/kg. In emergencies, the recommended infusion rate is 150 PE\/min\u0097three times that of phenytoin.<\/p>\n Fosphenytoin is water-soluble, obviating the need for the propylene glycol vehicle. It can be given intramuscularly or intravenously with 100% bioavailability. Fosphenytoin is less of a tissue irritant than the phenytoin\/propylene glycol preparation, with pruritus and paresthesias the most common side effects. Patients can receive up to 30 cc IM (yes, that\u0092s 30 cc) in either single or multiple sites with minimal local irritation.70 There are minimal cardiotoxic effects though hypotension has been reported with rapid infusions.71 Blood pressure should be carefully monitored, especially in patients with underlying cardiovascular disease. The package insert recommends the use of cardiac monitoring during infusion.<\/p>\n One study showed no cost benefit with fosphenytoin assuming a low complication rate with phenytoin (Pharmacotherapy 20(8):910 August 2000)<\/p>\n <\/p>\n <\/p>\n In one study, there was no time benefit to the use of fosphentoin loading, nor were there any adverse effects with phenytoin load. (Neuro Res 24:842, Dec 2002) and another (Annals 2004 43:3, p.399)<\/p>\n <\/p>\n No adverse drug effects with phenytoin in this study (Academic Emergency Medicine Volume 11, Number 3 244-252)<\/p>\n <\/p>\n Consider PO loading of phenytoin in patients who seize secondary to non-compliance. <\/strong><\/p>\n An oral dose of 19 mg\/kg in men and 23 mg\/kg in women will produce a therapeutic level in the majority of patients by 3-4 hours.146 However, assess these patients carefully for ataxia and dizziness prior to discharge.\u00a0 Can give whole dose at once, but probably does not load any quicker and higher risk od adverse effects.\u00a0 Better to load 400 mg\/hour to 20 mg\/kg.\u00a0 Should raise levels by 10.<\/p>\n <\/p>\n Ann Emerg Med. 1987 Apr;16(4):407-12. Related Articles, Links Single-dose oral phenytoin loading. Osborn HH, Zisfein J, Sparano R. A single 18 mg\/kg dose of oral phenytoin capsules or suspension (mean dose, 1.3 g) was given to 44 patients with recent seizures and no detectable serum phenytoin level. Mean serum phenytoin levels after loading for patients receiving capsules were 6.8 micrograms\/mL at two hours, 9.7 micrograms\/mL at three to five hours, 12.3 micrograms\/mL at six to ten hours, and 15.1 micrograms\/mL at 16 to 24 hours. Mean levels for patients receiving suspension were slightly, but not significantly, lower than for patients receiving capsules. No seizures occurred during an eight-hour observation period after loading. Drug toxicity was minimal. Single-dose, 18 mg\/kg oral phenytoin loading provides rapid therapeutic levels and is well tolerated.<\/em><\/p>\n <\/p>\n IV Phenytoin, though it can be given at 50 mg\/minute to dose of 20 mg\/kg, should actually me 20 mg\/minute.\u00a0 Give above forearm in at least 20G IV.<\/p>\n <\/p>\n Calculating phenytoin level correction in hypoalbuminemia:<\/p>\n Corrected level= Measured phenytoin level \/[(albumin x 0.2) + 0.1]<\/strong><\/p><\/blockquote>\n In renal failure: CrCL < 20<\/p>\n Corrected level= Measured phenytoin level \/[(albumin x 0.1) + 0.1]<\/strong><\/p><\/blockquote>\n <\/p>\n The recent availability of a parenteral formulation of sodium valproate<\/p>\n (15-20 mg kg\u22121 loading dose and then 3-6 mg kg\u22121 min\u22121 thereafter)<\/p>\n has renewed interest in this agent for the control of SE.<\/p>\n Seizure (2007) 16, 527\u2014532<\/p>\n Modulates GABA-\u03b1 receptors at a site different from that targeted by benzodiazepines (BZDs) and barbiturates (Epilepsia 2004;45(7):757) Start with 1 mg\/kg slow bolus, may repeat in 5 minutes once. Maintenance 2-4\/mg\/hr titrated between 1 and 15 mg\/kg\/hr. Worked in ~2 minutes average in incredibly tiny study (Epilepsia 1998;39(10:18)<\/p>\n Can go up to 2.9 mg\/kg\/hr<\/p>\n <\/p>\n Valproate and tegratol can both cause thrombocytopenia<\/p>\n <\/p>\n To load depakote, give twice normal dose or 500 mg of depakene<\/p>\n <\/p>\n To boost phenobarb, give 100 mg PO<\/p>\n LEV 20\u00a0mg\/kg IV over 15\u00a0min or LOR 0.1\u00a0mg\/kg over 2-4\u00a0min had similar efficacy to terminate status (J Neurol. 2011 Sep 6) and a 2nd study in the elderly (Acta Neurol Scand 2010: 121: 418\u2013421)<\/p>\n Excellent Review (Epilepsia, 52(Suppl. 8):35\u201338, 2011)<\/p>\n <\/p>\n <\/p>\n Dementia, meningitis, tumor, history of brain disease might be predictors of non-convulsive status (J Neurol Neurosurg Psych 74:189 February 2003)<\/p>\n Psychogenic Seizures<\/p>\n The geotrophic eye test is performed by turning the patient\u0092s head from side to side and observing the eyes. It seems that in psychogenic seizures, the patient will always look away from the examiner, regardless of which way the head is turned.<\/p>\n <\/p>\n EEG reading rules for non-neurologists: (Crippen) 1) don’t even try to read neonatal EEGs, especially in premature babies. 2) for other EEGs, remember that the EEG should be the opposite of the ECG: \u00a0\u00a0 a) the more the EEG looks like VF, the better it is \u00a0\u00a0 b) the more the EEG looks like sinus rhythm, the worse it is. \u00a0\u00a0 c) the more the EEG varies in frequency and amplitude over time, the better it is \u00a0\u00a0 d) focal areas that differ from the rest of the EEG are bad (too slow, or too high or too low in \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 amplitude) \u00a0\u00a0 e) sharp stuff is almost always bad except at the vertex when falling asleep \u00a0\u00a0 f) whatever you think looks really bad is probably an artifact 3) all the rest is mere commentary (cf. Hillel)<\/p>\n <\/p>\n Review Article on cEEG (Neurocrit. Care 2005;2:330\u0096341 and in my desktop box)<\/p>\n Might try levetricatam as piracetam is used in countries that have it. Other thoughts: \u00a0 Pappert EJ, Goetz CG, Vu TQ, Ling ZD, Leurgans S, Raman R, Carvey PM. Animal model of posthypoxic myoclonus: effects of serotonergic antagonists. Neurology. 1999 Jan 1;52(1):16-21 \u00a0 Wicklein EM, Schwendemann G. Use of clonazepam and valproate in patients with Lance Adams syndrome.\u00a0 J R Soc Med. 1993 Oct;86(10):618 \u00a0 Tom ============================== Tom Bleck (tpb9k@virginia.edu) Thomas P. Bleck MD FCCM<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n Dilantin levels are inaccurate 2 hours after IV and 4 hours after IM fosphenytoin<\/p>\n <\/p>\n <\/p>\n <\/p>\n ictal deliberate eye closure is reliable indicator of pseudoseizure<\/p>\n (1) Chung SS, Gerber P, Kirlin KA.\u00a0 Ictal eye closure is a reliable indicator for psychogenic nonepileptic seizures\u00a0 Neurology<\/em>\u00a0 2006;66:1730-1.<\/p>\n <\/p>\n <\/p>\n Ketamine for Status<\/p>\n Ketamine<\/p>\n \u0095<\/p>\n NMDA receptor antagonist; Barbits\/benzos work well early in SE,<\/p>\n not late; Ketamine is opposite<\/p>\n \u0095<\/p>\n Loading dose: 1-2 mg\/kg IV\/1 min<\/p>\n \u0095<\/p>\n Maintenance dose: 0.01-0.03 mg\/kg\/min cIV (adjust with liver<\/p>\n failure)<\/p>\n \u0095<\/p>\n Principle: use only together with benzos<\/p>\n \u0095<\/p>\n Advantage: neuroprotective, hemodynamic stability<\/p>\n \u0095<\/p>\n Disadvantage: prolonged use anecdotally linked to brain atrophy<\/p>\n consistent with animal models of NMDA antagonist-mediated<\/p>\n neurotoxicity, may cause hypertension<\/p>\n \u0095<\/p>\n Caution with:<\/p>\n \u0096<\/p>\n intracranial mass, TBI, globe injuries, hydrocephalus, elevated ICP<\/p>\n \u0096<\/p>\n hypertension, chronic CHF, tachyarrhythmias, MI<\/p>\n \u0096<\/p>\n ETOH history<\/p>\n Borris 2000; Mazarati 1998, 1999; Mewasingh 2003<\/p>\n <\/p>\n Unilateral Mydriasis<\/p>\n temporal lobe seziures can do it (Epileptic Disord 2008; 10 (2): 165-9)<\/p>\n <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Treatment of seizures and Status Epilepticus in the Emergency Department<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[8,19],"tags":[],"yoast_head":"\n<\/span>Loading of Meds<\/span><\/h2>\n
Dilantin<\/h4>\n
\nGive the oral phenytoin load as a single dose.<\/b><\/p>\n\n
\n
\n
\n
\n
\n
\n
Valproate<\/h4>\n
Kepra<\/h4>\n
Carbamazepine<\/h4>\n
<\/span>Status Epilepticus<\/span><\/h2>\n
<\/h2>\n
<\/span>Fosphenytoin<\/span><\/h3>\n
<\/span>Sodium Valproate<\/span><\/h3>\n
<\/span>Propofol<\/span><\/h3>\n
<\/span>IV Keppra (Levetiracetam)<\/span><\/h3>\n
<\/span>New Drugs<\/span><\/h3>\n
<\/span>Non-Convulsive Status Epilepticus<\/span><\/h2>\n
<\/span>Neurocysticercosis<\/a><\/span><\/h2>\n
<\/span>EEG<\/span><\/h2>\n
<\/span>Lance-Adams syndrome<\/span><\/h2>\n
Mount Sinai Protocol<\/a><\/h4>\n
<\/span>Pseudoseizures<\/span><\/h2>\n