by: ramon medina emt-lp/rn - trac-v · • prompt ed evaluation, stroke team activation, lab...
TRANSCRIPT
• Discuss types of strokes
• Discuss the physical and neurological assessment of stroke patients
• Discuss pertinent historical findings
• Discuss pre-hospital and emergency management of strokes• Discuss pre-hospital and emergency management of strokes
• Discuss fibrinolytic treatment for strokes
• Each year approx. 795,000 Americans have a new or recurrent stroke.
• Every 40 seconds someone in this country will experience a stroke.
• Stroke kills more than 137,000 people a year, on average • Stroke kills more than 137,000 people a year, on average every 4 minutes someone dies of stroke
• 4th leading cause of death in the U.S.
• Leading cause of disability in the U.S.
• Americans will pay about 74 billion in stroke related medical cost and disability
Left Hemisphere Stroke
• Movement on right side of body
• Speech and language
Right Hemisphere Stroke
• Movement of left side of body
• Analytical and perceptual task• Capabilities and memory task
• Short term memory
Cerebellar Stroke
• Reflexes
• Balance
• Coordination
Brain Stem Stroke
• Involuntary life-support functions
• Coordination
• Types:• Ischemic
• Decrease in cerebral blood flow due to either a thrombus or an embolus.
• Ischemic strokes account for approx. 87% of all strokes
• Hemorrhagic Stroke• Hemorrhagic Stroke
• Account for approx. 10% on all strokes
• Occurs when a blood vessel in the brain ruptures leaking blood into the brain, yet are responsible for more than 30% of stroke deaths
• TIA (transient ischemic attack)
• Present in the same way strokes do, but are only a brief episode of cerebral ischemia.
• TIA’s are often a warning sign that a stroke is imminent.
• Sudden weakness or numbness of the face, arm, or leg especially on one side of the body.
• Sudden confusion
• Trouble speaking or understanding
• Sudden trouble seeing in one or both eyes• Sudden trouble seeing in one or both eyes
• Sudden trouble walking
• Dizziness or loss of balance or coordination
• Sudden severe H/A with no known cause
• Hypertensive Encephalopathy
• H/A, delirium, significant hypertension, cortical blindness, seizure
• Seizure
• Postictal period
• Hypoglycemia• Hypoglycemia
• Hx of DM, low serum glucose, decreased level of consciousness
• Head Trauma
• Drugs & Alcohol
• CNS Tumor
• Medical History
• Comorbid factors (DM, HTN, A-Fib)
• Seizures, Prior Strokes, Past episodes hypoglycemia
• Medications
• With special attention to anticoagulant or antiplatelet drugs• With special attention to anticoagulant or antiplatelet drugs
• Attempt to determine exact onset of symptoms. Ask both:
• When did the symptoms start ?
• This is the “start” for fibrinolytic treatment window
• When was the last time the patient was seen normal ?
• Other important historical elements include any sign of seizure or trauma before onset of symptoms
• Stroke patients are dispatched at the highest level of care available in the shortest time possible
• Time b/w the receipt of the call and dispatch of the response team is <90 sec.
• EMSS response time is <8 minutes (time of call from receipt of call by dispatch to arrival of EMS to patient)dispatch to arrival of EMS to patient)
• Dispatch time <1 min
• Turnout time (from when a call is received to the unit being en route) <1min
• On-Scene time <15 minutes (barring extenuating circumstances)
•TIME IS BRAIN.!!!
• The goal of stroke care is to minimize brain injury and maximize the patient’s recovery.• Stroke Chain of Survival
1. Detection• Patient or bystander recognition of stroke S/S
2. Dispatch• Immediate activation of 911 and priority EMS dispatch
3. Delivery3. Delivery• Prompt triage and transport to most appropriate stroke hospital and pre-hospital notification
4. Door• Immediate ED triage to high-acuity area
5. Data• Prompt ED evaluation, stroke team activation, lab studies, and brain imaging
6. Decision• Diagnosis and determination of most appropriate therapy; discussion with patient and family
7. Drug• Administration of appropriate drugs or other interventions
8. Disposition• Timely admission to stroke unit, ICU, or transfer
• Maintain airway and administer oxygen to maintain Spo2 >94% and <100%
• Initiate IV of NS @ TKO.
� Avoid use IV fluids containing glucose
• Perform glucose check• Perform glucose check
� Hypoglycemia can mimic stroke symptoms
� If hypoglycemic less than 50mg/dl give D50W 25gms. Administer with caution due D50W decreasing the efficacy of tPA.
• Monitor cardiac rhythm.
� If arrhythmia is present, proceed to the appropriate protocol
� Obtain a 12-lead EKG
• If hypertensive, contact receiving stroke center and/or medical control for hypertension management.
• Systolic >220
• Diastolic >120
• Transport with HOB elevated to 30 degrees if patient can tolerate. Monitor V/S closely.
• Perform exam, noting initial neurological exam for baseline documentation.
• Positive Stroke Assessment Results
• Transport to stroke center.!
• Do not delay transport
• Pre-Hospital notification to receiving hospital
• Obtain phone numbers at which family members or witnesses • Obtain phone numbers at which family members or witnesses can by reached
• Consider transporting a family member along with patient.
• Assess ABC’s• Provide Oxygen
• For hypoxemic stroke patients (O2 saturation <94%) or patients with unknown saturation
• Establish IV access & Obtain blood samples• Baseline blood count, coagulation studies, and blood glucose
• Do not let this delay CT scan• Do not let this delay CT scan
• Perform Neurologic Assessment• NIH Stroke Scale (NIHSS) or similar tool
• Activate Stroke Team• Order CT brain w/o contrast
• Have scan read promptly
• Obtain 12-lead EKG• AMI• A-Fib
• Critical Time Goals (NINDS Recommendations)• Initial patient evaluation within 10 min of ED arrival
• Stroke Team notification within 15 minutes of ED arrival
• Initiate a CT scan within 25 minutes of arrival
• CT w/o contrast
• Interpret the CT scan within 45 min of arrival
• Determine type & location of stroke• Determine type & location of stroke
• May identify other structural abnormalities responsible for stroke like symptoms
• Ensure door-to-drug (needle) time of 60 min from ED arrival
• And within 3 hours from onset of symptoms
• Select patients may have slightly more time; up to 4.5 hours• Exclusion Criteria
• Age >80
• Severe Stroke (NIHHS > 25)
• Taking an oral anticoagulant regardless of INR
• Hx. of both diabetes and prior ischemic stroke
• Given within 3 hours of onset of symptoms and up to 4.5 hours in a select population
• Contraindicated in the hemorrhagic stroke patient
• Other exclusion criteria• Head Trauma
• Stroke within last 3 months• Stroke within last 3 months
• Symptoms suggestive of subarachnoid hemorrhage
• Hx. of previous intracranial hemorrhage
• Elevated blood pressure ( systolic >185mm/hg or diastolic > 110mm/hg)
• Current use of anti-coagulants
• Complications• Intracranial hemorrhage
• Bleeding complications
• Blood Pressure Management
• Potential Approach to arterial HTN in patients with acute ischemic stroke who are candidates for reperfusion therapy.
• For blood pressure > 185/110 mm/hg
• Labetalol 10-20 mg IV over 1-2 min, may repeat x1
• Nicardipine IV 5mg/hr, titrate up by 2.5mg per hour every 5-15min. with a max of 15mg/hr
• Other agents may be considered when appropriate (hydralazine, enalaprilat)
• If blood pressure is not maintained at or below 185/110 mmHg, do not adminster rtPA
• The type and degree of disability following stroke depends on the area of the brain effected and extent.
• 5 types of disability
• Paralysis
• Sensory Disturbance• Sensory Disturbance
• Language Problems
• Thinking and Memory
• Emotional Disturbances
• Sinz, E. & Navarro, K. (2011). Advanced Cardiovascular Life Support Provider Manual. Dallas, TX: AHA
• Holleran, R. (2010). ASTNA Patient Transport Principles and Practice. St. Louis, MO: Mosby
• Pollak, A. (2011). Critical Care Transport. Sudbury, MA: Jones • Pollak, A. (2011). Critical Care Transport. Sudbury, MA: Jones and Bartlett Publishing