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Ischemic Anterior Circulation StrokeIschemic Anterior Circulation Stroke
Edward C. Jauch, MD, MSEdward C. Jauch, MD, MS
Assistant ProfessorAssistant ProfessorDepartment of Emergency MedicineDepartment of Emergency Medicine
University of Cincinnati College of MedicineUniversity of Cincinnati College of MedicineCincinnati, OHCincinnati, OH
andandGreater Cincinnati/Northern Kentucky Greater Cincinnati/Northern Kentucky
Stroke TeamStroke Team
Edward Jauch, MD, MS
Lecture GoalsLecture Goals
• Review Emergency Department evaluation of acute ischemic stroke
• Identify issues specific to thrombolytic therapy in acute stroke
• Identify treatment options for acute ischemic stroke
Introduction
Edward Jauch, MD, MS
61 year old male, with acute aphasia, 61 year old male, with acute aphasia,
right facial droop, and right sided weaknessright facial droop, and right sided weakness
• 12:30 Sudden onset while working in yard
• 12:45 Family calls 911
• 13:05 Advanced squad evaluates and
rapidly transports
• 13:15 Squad notifies receiving
hospital of possible stroke patient
Case
Edward Jauch, MD, MS
61 year old male with possible stroke 61 year old male with possible stroke arrives at Our Lady of Faint Hopearrives at Our Lady of Faint Hope
• 13:30ED triage andphysician evaluation
• 13:45 Stroke Team responds
• 14:00CT scan performed
• 14:15Discuss with family and PMD
• 14:20Labs back: gluc 97BP remains 150/70’s
Case
Edward Jauch, MD, MS
Neurologic ExaminationNeurologic ExaminationNIH Stroke ScaleNIH Stroke Scale
ItemItem DescriptionDescription ScoreScore
1a1a
1b1b1c1c2233445566778899
1010111112121313
Level of ConsciousnessLevel of ConsciousnessLOC QuestionsLOC QuestionsLOC CommandsLOC CommandsBest GazeBest GazeBest VisualBest VisualFacial PalsyFacial PalsyMotor Arm LeftMotor Arm LeftMotor Arm RightMotor Arm RightMotor Leg LeftMotor Leg LeftMotor Leg RightMotor Leg RightLimb AtaxiaLimb AtaxiaSensorySensoryNeglectNeglectDysarthriaDysarthriaBest LanguageBest Language
00 0000111122002200220011000011
Case
Edward Jauch, MD, MS
61 yo male with possible stroke61 yo male with possible stroke
• 14:20CT reading: No hemorrhage or
early ischemia
• 14:25Checklist done: No exclusion
criteria met
• 14:30Decision timeCase
Edward Jauch, MD, MS
Impact of StrokeImpact of Stroke
• 3rd leading cause of death in the U.S.
• A leading cause of adult disability
• 600,000 new strokes per year in U.S.
• 85% are ischemic
Introduction
Edward Jauch, MD, MS
Death Rates from StrokeDeath Rates from Stroke
10594 94
104
75
58 56 58 60
0
20
40
60
80
100
120
1900 1920 1945 1950 1980 1990 1992 1993 1995Year
Str
oke
Dea
ths
per
100
k
(Dept Health and Human Services)(Dept Health and Human Services)Epidemiology
Edward Jauch, MD, MS
Stroke OutcomesStroke Outcomes
• In the 4.5 million US stroke survivors:
10% Recover almost completely
25% Recover with minor impairments
40% Experience moderate to severe impairments requiring special
care
10% Require care in a nursing home or other long-term care facility
15% Die shortly after the strokeOutcomes
(NSA, 2001)(NSA, 2001)
Edward Jauch, MD, MS
Stroke OutcomesStroke Outcomes
• Medical morbidity associated with stroke:30% Develop pneumonia within first month
10% Risk of recurrent stroke per year10% Deaths post-stroke from pulmonary
embolisms
• Other morbidity from stroke:23% Develop multi-infarct dementia
70%* Develop depression (27% major)
40% Depression common among care-givers
Outcomes *High end of estimates*High end of estimates
Edward Jauch, MD, MS
Stroke Risk FactorsStroke Risk Factors
• Modifiable risk factors
– High blood pressure– Cigarette smoking– Transient ischemic
attacks– Heart disease– Diabetes mellitus– Hypercoagulopathy– Carotid stenosis– Other
• Unmodifiable risk factors
– Age– Gender– Race– Prior stroke– Family History
• Other possible risk factors– Sickle cell disease– Apolipoproteins– Others
Epidemiology
Edward Jauch, MD, MS
Influence of Initial Medical ContactInfluence of Initial Medical Contacton Arrival Times to the E.D.on Arrival Times to the E.D.
0
50
100
150
200
250
300
350
400
Time from Onset to ED
Arrival(mins)
911 Private MD Hospital
Mean
Median
(Barsan, Arch Int Med, 1993)(Barsan, Arch Int Med, 1993)Epidemiology
Edward Jauch, MD, MS(Pancioli JAMA 1998; Kothari Stroke 1997)(Pancioli JAMA 1998; Kothari Stroke 1997)
DetectionDetection
• What are Signs & Symptoms?– 43% general public didn’t know any– 39% of acute stroke patients didn’t know any
• What are Risk Factors?– 32% general public didn’t know any– 43% of acute stroke patients didn’t know any
Edward Jauch, MD, MS
Where Are We Today?Where Are We Today?
• Poorly informed
• Too slow
• Too late
• Ill prepared
• Fatalistic
Epidemiology
Edward Jauch, MD, MS
Forces of ChangeForces of Change
• Public expectations– Aware of “Draino for the Braino” – Nihilistic attitude of stroke changing
• Medical - legal pressures
• Managed care cost concerns
• New treatments of stroke on horizon
• Change in treating physicians perceptions of “risk”
Epidemiology
Edward Jauch, MD, MS
Organized Stroke Care Organized Stroke Care Saves LivesSaves Lives
• 21% reduction in early mortality
• 18% reduction in 12 month mortality
• Decreased length of hospital stay
• Decreased need for institutional care
(Jorgensen, Stroke 1994)(Jorgensen, Stroke 1994)Epidemiology
Edward Jauch, MD, MS
Patient Aversion to Patient Aversion to Various Stroke OutcomesVarious Stroke Outcomes
0123456789
10
Languagedeficits
Cognitivedeficits
Motordeficits
Death
Mild
Moderate
Severe
(Solomon, Stroke 1994)(Solomon, Stroke 1994)
Aversion:Aversion:
Epidemiology
Edward Jauch, MD, MS
Tissue-Plasminogen Activator inTissue-Plasminogen Activator inAcute Ischemic StrokeAcute Ischemic Stroke
• Double-blinded, randomized
• Placebo controlled
• 0.9 mg / kg IVP dose
• 624 patients
• Treated within 3 hours– 1/2 within 90 minutes– 1/2 within 91-180 minutes
Management
Edward Jauch, MD, MS
Benefits of ThrombolyticsBenefits of Thrombolyticsin the NINDS Trialin the NINDS Trial
No/Minimal Moderate No/Minimal Moderate Severe Severe DeadDead
For every 16 patients:
Edward Jauch, MD, MS
0
1
2
3
4
5
6
7
8
50 60 70 80 90 100 110 120 130 140 150 160 170 180
Minutes from Stroke Onset to Start of Treatment
Od
ds
Rat
io f
or
Fav
ora
ble
O
utc
om
e at
3 M
on
ths
Relationship of Time to Thrombolytic Treatment
Odds Ratio of Favorable Outcome
Benefit for rt-PA
No Benefit for rt-PA
Management
Time is Brain!Time is Brain!
Edward Jauch, MD, MS
Symptomatic Hemorrhages Symptomatic Hemorrhages by CT Findings in NINDS Trialby CT Findings in NINDS Trial
31
6
0
5
10
15
20
25
30
35
Yes No
Percent of Patients that Developed Symptomatic HemorrhagesPercent of Patients that Developed Symptomatic Hemorrhages
(Broderick, Stroke 1997)(Broderick, Stroke 1997)
%
Edema or Mass Effect Seen on Initial CTEdema or Mass Effect Seen on Initial CT
Edward Jauch, MD, MS
Symptomatic Hemorrhages by Symptomatic Hemorrhages by Baseline NIHSS in the NINDS TrialBaseline NIHSS in the NINDS Trial
23
54
17
02468
1012141618
0-5 6-10 11-15 16-20 >20
Baseline NIH Stroke Scale Score
Percentage of t-PA Patients with Symptomatic ICHPercentage of t-PA Patients with Symptomatic ICH
(Broderick, Stroke 1997)(Broderick, Stroke 1997)
Edward Jauch, MD, MS
Cost Effectiveness for rt-PA Cost Effectiveness for rt-PA in Acute Ischemic Strokein Acute Ischemic Stroke
rt-PA placebo p value
LOS 10.9 12.4 0.02
Discharge home 48% 36% 0.002
With rt-PA, considering 1,000 eligible patients:
Hospitalization costs $1.7 million more
Rehabilitation costs $1.4 million less
Nursing home costs $4.8 million less
564 quality-adjusted life-years saved
(Fagan, Neurology 1998)(Fagan, Neurology 1998)Epidemiology
Edward Jauch, MD, MS
STARS StudySTARS Study
• Prospective Phase IV study mandated by FDA• Multicenter (24 academic, 33 community)• NINDS protocol used for 389 patients• Median times:
Onset to treatment 2.7 hrs Arrival to treatment 1.6 hrs Less than 4% treated in under 90 mins
• Median NIHSS 13 (14 mean)
(Albers, JAMA 2000)(Albers, JAMA 2000)Management
Edward Jauch, MD, MS
STARS StudySTARS Study
• Results – Outcome– Favorable outcome 35% (mR1) – Functionally independent 43% (mR2) – 30 day mortality rate 13%
• Results – Complications– Symptomatic ICH* 3.3%
* Within 3 days
– Fatal ICH 1.8%
(Albers, JAMA 2000)(Albers, JAMA 2000)Management
Edward Jauch, MD, MS
STARS StudySTARS Study
• Predictors of favorable outcome– Baseline NIHSS < 10– Absence of significant CT abnormalities– Age < 85 years– Lower mean arterial pressure
• Predictors of lack of response– NIHSS (22% decrease in OR per 5 points)– NIHSS > 10 75% decrease in OR– Significant CT findings 87% decrease in OR– Increased mean arterial pressure 19% decrease in OR
Management (Albers, JAMA 2000)(Albers, JAMA 2000)
Edward Jauch, MD, MS
Cleveland Area ExperienceCleveland Area Experience
• Historical prospective cohort study
• Conducted July 1997 through June 1998
• Multicenter –29 hospitals (academic and community)
• No coordination or fixed protocol (NINDS protocol assumed)
• 3948 patients reviewed
(Katzen, JAMA 2000)(Katzen, JAMA 2000)Management
Edward Jauch, MD, MS
Cleveland Area ExperienceCleveland Area Experience
• Results –– 3984 AIS patients admitted to 29 hospitals in 1 yr– 17% admitted within 3 hours of stroke onset– 1.8% received t-PA at 16 hospitals
(0 - 10.2% of stroke patients)– Of the top 4 hospitals in Cleveland, utilization
ranged from 0-28% within 3 hour window
(Katzen, JAMA 2000)(Katzen, JAMA 2000)Management
Edward Jauch, MD, MS
Cleveland Area ExperienceCleveland Area Experience
• Results – Complications in tPA patients– Total ICH rate 22%– Symptomatic ICH* 15.7%– Fatal ICH 8.6%
• Results – Mortality rate– tPA patients 15.7%– Patients in 3 hours ø tPA 7.2%– All patients ø tPA 5.1%
Management (Katzen, JAMA 2000)(Katzen, JAMA 2000)
Edward Jauch, MD, MS
Cleveland Area ExperienceCleveland Area Experience
• Results – Protocol violations– Total NINDS violations 50%– Antiplatelets / anticoagulants 37.1%– Beyond 3 hours 12.9%
(3.15-6.25 hrs)– Risk of complications not associated with
protocol violations (p=0.74)
(Katzen, JAMA 2000)(Katzen, JAMA 2000)Management
Edward Jauch, MD, MS
How to Evaluate and Treat How to Evaluate and Treat Acute Ischemic Stroke in 2000Acute Ischemic Stroke in 2000
Evaluation
Edward Jauch, MD, MS
Acute Myocardial InfarctionAcute Myocardial Infarction
This paradigm has shifted –
• Chest pain / SOB / dysrhythmiaChest pain / SOB / dysrhythmia• Rapid access to EMSRapid access to EMS• Prehospital identification and callPrehospital identification and call• Prehospital ECGPrehospital ECG• Team and protocols in place in EDTeam and protocols in place in ED• ““Door to Drug - 30 Minutes”Door to Drug - 30 Minutes”• What is the mortality and morbidity?What is the mortality and morbidity?
Evaluation
Edward Jauch, MD, MS
2000 American Stroke Association2000 American Stroke AssociationNew GuidelinesNew Guidelines
• EMS systems should implement a stroke protocol
• Potential fibrinolytic candidates should be taken to hospitals capable of providing acute stroke care
• E.D. AIS triage should be similar to AMI
• Intravenous fibrinolysis for AIS is Class I
• Intra-arterial fibrinolysis for AIS is Class IIb
(ASA, Circulation 2000)(ASA, Circulation 2000)Evaluation
Edward Jauch, MD, MS
Stroke Chain of Survival & RecoveryStroke Chain of Survival & Recovery
• Detection: Early recognition
• Dispatch: Early EMS activation
• Delivery: Transport & management
• Door: ED triage
• Data: ED evaluation & management
• Decision: Specific therapies
• Drug: Thrombolytic & future agents
Evaluation
Edward Jauch, MD, MS
NIH Symposium RecommendationsNIH Symposium Recommendations
• Door-to-MD: 10 minutes
• Door-to-Stroke 15 minutes Team notification:
• Door-to-CT scan: 25 minutes
• Door-to-Drug: 60 minutes
(80% compliance)
• Door-to-Admission: 3 hoursEvaluation
Edward Jauch, MD, MS
Detection: Detection: Stroke Public AwarenessStroke Public Awareness
Evaluation
Edward Jauch, MD, MS
Dispatch: Call 911Dispatch: Call 911Delivery: Transport & ManagementDelivery: Transport & Management
• Priority dispatch• ABC’s• Time of onset• Neurological evaluation /
Prehospital stroke scale• Check glucose• Stroke recognition• Early hospital
notification• Rapid Transport
Evaluation
Edward Jauch, MD, MS
Door:Door: Emergent TriageEmergent TriageData: Data: ED EvaluationED Evaluation
Evaluation
Edward Jauch, MD, MS
PreparationPreparation
• Check glucose• Two large IV lines• Oxygen as needed• Cardiac monitor• Continuous pulse-ox• Non-contrast CT scan• ECG• CXR
• Perform the NIH stroke scale
• Get rt-PA – Prepare to mix– Have pharmacy alerted
• Make sure family is available
• Contact primary care provider
Evaluation
Edward Jauch, MD, MS
PreparationPreparation
• Systems and personnel need to be in place
• Know your Stroke Team before you need them!
Evaluation
Edward Jauch, MD, MS
General Stroke ManagementGeneral Stroke Management
• Oxygen– Use to correct hypoxia– Suggestion it may hurt
one year survival 69% 3L NC vs 73% control
• Glucose– Maintain euglycemia – Treat glucose < 50 with D50– Treat glucose > 300 mg/dl with insulin
(Rønning, Stroke 1999)(Rønning, Stroke 1999)Evaluation
Edward Jauch, MD, MS
General Stroke ManagementGeneral Stroke Management
• Cardiac monitor– Observe for ischemic changes or atrial fibrillation
• Intravenous fluids – Avoid D5W and excessive fluid administration– IV normal saline at 50 cc / hr unless otherwise required
• NPO– Aspiration risk is great, avoid oral intake until swallowing
assessed
• Temperature– Avoid hyperthermia, PO/PR acetaminophen prn
Evaluation
Edward Jauch, MD, MS
The True Time of OnsetThe True Time of Onset
• Multiple sources
• How normal were they?– Who saw them this
morning?– Clearly no symptoms?
• Times of reference– The time the basketball
game started
Evaluation
Edward Jauch, MD, MS
Neurologic ExaminationNeurologic ExaminationNIH Stroke ScaleNIH Stroke Scale
• Value of the NIHSS:
– Correlates with size of stroke and prognosis
– Strokes with NIHSS < 4 do well and are not typically thrombolytic candidates
– Strokes with NIHSS > 20 are large with extremely poor prognosis and fair response to IV thrombolytics
ItemItem DescriptionDescription ScorScoree
1a1a
1b1b1c1c2233445566778899
1010111112121313
Level of Level of ConsciousnessConsciousnessLOC QuestionsLOC QuestionsLOC CommandsLOC CommandsBest GazeBest GazeBest VisualBest VisualFacial PalsyFacial PalsyMotor Arm LeftMotor Arm LeftMotor Arm RightMotor Arm RightMotor Leg LeftMotor Leg LeftMotor Leg RightMotor Leg RightLimb AtaxiaLimb AtaxiaSensorySensoryNeglectNeglectDysarthriaDysarthriaBest LanguageBest Language
0-30-3
0-20-20-20-20-20-20-30-30-30-30-40-40-40-40-40-40-40-40-40-40-20-20-20-20-20-20-30-3
Evaluation
Edward Jauch, MD, MS
Middle Cerebral ArteryMiddle Cerebral ArteryStroke SyndromesStroke Syndromes
• Dominant hemisphereContralateral hemiparesis arm, face > legContralateral sensory lossContralateral homonymous hemianopia; Ipsilateral eye deviationBroca’s and Wernicke’s aphasias
• Non-dominant hemisphereContralateral hemiparesis arm, face > legContralateral sensory loss with extinctionContralateral homonymous hemianopia; Ipsilateral eye deviationDysarthria without aphasiaIpsilateral hemineglect, inattention, extinction on double
stimulation
Evaluation
Edward Jauch, MD, MS
Anterior and Posterior Cerebral Anterior and Posterior Cerebral Arteries Stroke SyndromesArteries Stroke Syndromes
• Anterior Cerebral ArteryContralateral hemiparesis leg > arm, face
Contralateral sensory loss
Change in personality, speech perserveration
Bilateral occlusions produce paraplegia, anarthria, akinetic mutism
• Posterior Cerebral ArteryContralateral hemianopia (patients frequently unaware)
Brain stem findings (varied)
Bilateral occlusions produce cortical blindness
Evaluation
Edward Jauch, MD, MS
Early CT Changes in Ischemic StrokeEarly CT Changes in Ischemic Stroke
• Loss of insular ribbon
• Loss of gray-white interface
• Loss of sulci
• Acute hypodensity*
• Mass effect*
• Dense MCA sign
Evaluation
* Relative contraindication* Relative contraindication
Edward Jauch, MD, MS
Considerations:Considerations:Who will it and won’t it helpWho will it and won’t it help
• Factors associated with worse outcomes:– Increased patient age– History of diabetes mellitus– Increased time from onset– Increased blood pressure– Increased stroke severity– Baseline CT findings of stroke
• All subgroups (age, race, gender, co-morbid illnesses, and stroke location and size) benefited from thrombolytics compared to placebo in the NINDS trial
Evaluation
Edward Jauch, MD, MS
Factors Associated with Factors Associated with Increased Risk of ICHIncreased Risk of ICH
• Treatment initiated > 3 hours
• Increased thrombolytic dose
• Elevated blood pressure
• NIHSS > 20
• Acute hypodensity or mass effect on baseline CT
Evaluation
Edward Jauch, MD, MS
Differential DiagnosisDifferential Diagnosis
• Intracerebral hemorrhage
• Hypoglycemia / Hyperglycemia
• Seizure
• Migraine headache
• Hypertensive crisis
• Epidural / subdural
• Tumor
• Meningitis / Encephalitis / Abscess
Evaluation
Edward Jauch, MD, MS
Stroke Diagnosis - TIAStroke Diagnosis - TIA
• TIA definition an arbitrary definition from 1970’s
• TIA’s lasting longer than several minutes can produce focal defects on neuroimaging
• Median duration 14 mins / 8 mins
• If symptoms persist more than 1 hour, only 14% resolved by 24 hours
• NINDS placebo group only had 2% improvement to baseline at 24 hours
(CSOTIA)(CSOTIA)Evaluation
Edward Jauch, MD, MS
Exclusions to ThrombolyticsExclusions to Thrombolytics
• Stroke or head trauma in 3 mos• Major surgery within 14 days• Any history of intracranial
hemorrhage• SBP > 185 mm Hg• DBP > 110 mm Hg• Rapidly improving or minor
symptoms• Symptoms suggestive of
subarachnoid hemorrhage• Glucose < 50 or > 400 mg/dl
• GI hemorrhage within 21 days• Urinary tract hemorrhage within
21 days• Arterial puncture at non-
compressible site past 7 days • Seizures at the onset of stroke• Patients taking oral
anticoagulants• Heparin within 48 hours AND an
elevated PTT• PT >15 sec• Platelet count <100 X 109/L
Evaluation
Edward Jauch, MD, MS
Exclusions to ThrombolyticsExclusions to Thrombolytics
• “Patients were also excluded if aggressive measures were required to lower the blood pressure to within specified limits”
Evaluation
Edward Jauch, MD, MS
Blood Pressure ManagementBlood Pressure Management
• “Gentle” management if thrombolytic candidate SBP > 180 mm Hg
DBP > 110 mm Hg
• Choices:– Labetalol 10 - 20 mg IV– Enalapril 1.25 mg IV– Nitropaste 1” to chest wall
• No nipride or nitroglycerin gtts
Evaluation
Edward Jauch, MD, MS
Blood Pressure ManagementBlood Pressure Management
• Management in non-thrombolytic candidates only if:
SBP > 220 mm HgDBP > 120 mm HgMAP > 130 mm Hg
• Also consider BP management in:– Acute myocardial infarction– Aortic dissection– True hypertensive encephalopathy– Severe left ventricular failure
Evaluation
Edward Jauch, MD, MS
What are the Options?What are the Options?
• No thrombolytics– Nothing– Aspirin– Heparin
• Intravenous rt-PA *Only approved therapy for acute stroke
• Other– Intra-arterial thrombolysis– Low dose IV rt-PA followed by IA rt-PA– Investigation procedure
Treatment
Edward Jauch, MD, MS
Stroke Treatment – Stroke Treatment – Aspirin / HeparinoidsAspirin / Heparinoids
• Aspirin– Two large trials:
International Stroke Trial (IST)International Stroke Trial (IST)
Chinese Acute Stroke Trial (CAST)Chinese Acute Stroke Trial (CAST)
– Death / nonfatal strokes reduced 11%– If not a thrombolytic candidate, give within first 24 hrs
• Heparin– Two important trials
International Stroke Trial (IST)International Stroke Trial (IST)
TOAST (Trial of ORG 10172)TOAST (Trial of ORG 10172)
– No net stroke benefitTreatment
Edward Jauch, MD, MS
rt-PA Dosingrt-PA Dosing
• 0.9 mg/kg (max = 90 mg)
• 10% bolus (over 1 minute)
• Remainder as a 1 hour infusion
• Have the rt-PA in the Emergency Department, not the Pharmacy!
Treatment
Edward Jauch, MD, MS
Post-Treatment CarePost-Treatment Care
Treatment
Edward Jauch, MD, MS
Patient MonitoringPatient Monitoring
• ICU admission (24 hours)
• Neuro checks – Q 15 minute X 6 hours– Q 1 hour X 18 hours
• BP checks– Call on the FIRST abnormal reading! – Do not hesitate to use a drip
• Watch for bleedingTreatment
Edward Jauch, MD, MS
Contingency Plan - ICH OrdersContingency Plan - ICH Orders
• STAT Repeat CT
• STAT Labs (Fibrinogen, CBC, PT/PTT)
• Type and screen
• Cryoprecipitate / Platelets
• Neurosurgical consult
Treatment
Edward Jauch, MD, MS
Blood Pressure ManagementBlood Pressure ManagementAfter ThrombolyticsAfter Thrombolytics
• SBP 180 - 230 or DBP 105-120 mm Hg– Labetalol 10 mg IV, may repeat / double to 150 mg max– Labetalol drip 2-8 mg / min
• SBP > 230 or DBP 121 - 140 mm Hg– Above– Sodium nitroprusside
• DBP > 140 mm Hg– Sodium nitroprusside (0.5 µg/kg per minute)
• May consider enalapril in patients with CHF, asthma, abnormal cardiac conduction
Treatment
Edward Jauch, MD, MS
Post-treatment IssuesPost-treatment Issues
• Management of seizures
• Management of increased ICP
• Risk factor identification and modification
• Swallowing assessment
• Early rehabilitation
Treatment
Edward Jauch, MD, MS
The Future of The Future of Acute Stroke TreatmentAcute Stroke Treatment
• Establishment of tiered “Stroke Centers”• New diagnostic tools Neuroimaging, markers
• Thrombolytics ProUK, TNK, rPA, ANCROD*
• Intra-arterial approaches IA, stents, angioplasty
• Combination agents Antiplatelets, LMWH, neuroprotectives
• Cerebral protection Hypothermia, HBO
• Surgical Hemicraniectomy
* fibrinogenolytic
Future
Edward Jauch, MD, MS
Primary Stroke Center ProposalPrimary Stroke Center Proposal
• Patient care areas– Acute stroke teams– Written care protocols– EMS participation– Emergency Department
participation– Stroke unit*– Neurosurgical services**
• Support services– Organizational
support– Stroke center director– Neuroimaging– Laboratory– Outcome & quality
measures– CME
(Brain Attack Coalition, JAMA 2000)(Brain Attack Coalition, JAMA 2000)
* Individualized by institution
** Within 2 hours
Future
Edward Jauch, MD, MS
Intra-arterial ThrombolysisIntra-arterial Thrombolysis
Future
Edward Jauch, MD, MS
Intra-Arterial Thrombolytic Intra-Arterial Thrombolytic Efficacy vs.Time of DeliveryEfficacy vs.Time of Delivery
0
10
20
30
40
50
60
70
80
3.3 4.2 5.3 >6
Time from Onset (hrs)
Goo
d O
utco
me
(% m
RS
0-2
)
EMS
PROACT
GC/NK
Control
(Ernst, Stroke 2000)(Ernst, Stroke 2000)Future
Edward Jauch, MD, MS
61 yo male with acute stroke:61 yo male with acute stroke:The Decision to TreatThe Decision to Treat
• 14:35IV rt-PA given. 0.9 mg/kg total10% bolus - 9 mg
90% over 1 hr - 81 mg
• 15:45Patient goes to ICU
Report personally given to ICU staff
• 15:50Pathway actions begin
(HOB, BP, aspiration precautions, carotid ultrasound)
Case
Edward Jauch, MD, MS
61 year old male s/p rt-PA: 61 year old male s/p rt-PA: 24 Hour Follow-up24 Hour Follow-up
• Initial NIHSS = 10• 24 hr NIHSS = 3
Mild facial palsy
Right arm drift
Mild dysarthria
• Repeat CT shows areas of infarct
Case
Edward Jauch, MD, MS
• Carotid U/S shows 60 -80% stenosis left ICA
• Speech recommends swallowing II diet and daily checks
• Physical therapy ongoing
• CEA performed day 4
• Patient discharged day 7
61 year old male s/p t-PA:61 year old male s/p t-PA:Hospital CourseHospital Course
Case
Edward Jauch, MD, MS
ConclusionsConclusions
• Acute stroke is an emergency
• Multidisciplinary systems must be in place in every institution
• Strict adherence to protocols minimizes complications
• Acute stroke treatment is and will remain the responsibility of the Emergency Physician
Conclusion