What you need to know
- Recognize common stroke warning signs.
- Understand altered mental status as an emergency clue.
- Learn basic seizure and neurological vocabulary.
Plain-English introduction
Neurological emergencies can be frightening because the brain controls speech, movement, sensation, breathing drive, and consciousness. A change in brain function can appear as weakness, confusion, seizure, fainting, slurred speech, or severe headache.
Stroke is sometimes called a brain attack because blood flow to part of the brain is interrupted or bleeding occurs. Time matters because brain tissue can be injured quickly.
Full lesson
FAST is a common memory tool: face drooping, arm weakness, speech difficulty, and time to call emergency help. Other stroke signs may include sudden vision changes, severe dizziness, severe headache, numbness, confusion, or trouble walking.
Altered mental status means a change in alertness, awareness, behavior, or thinking. Causes can include low oxygen, low blood sugar, infection, stroke, medication effects, head injury, seizure, or shock. Students should treat sudden confusion as an important clue.
A seizure is abnormal electrical activity in the brain. Some seizures involve full-body shaking. Others may look like staring, repetitive movements, confusion, or brief loss of awareness. After a seizure, the postictal phase may include sleepiness, confusion, headache, or weakness.
How to think through questions
- Check safety and responsiveness.
- Look for sudden neurological changes.
- Check blood glucose when appropriate and within role.
- Note last known well time for possible stroke.
- Escalate immediately for stroke signs, seizure, or sudden severe mental status change.
Key terms to know
- Stroke
- Brain injury caused by interrupted blood flow or bleeding.
- FAST
- Face, arm, speech, time; a stroke recognition tool.
- Altered mental status
- A change in alertness, awareness, behavior, or thinking.
- Seizure
- Abnormal electrical activity in the brain.
- Postictal
- The recovery period after a seizure.
- Aphasia
- Difficulty producing or understanding language.
- Hemiparesis
- Weakness on one side of the body.
Common mistakes
- Waiting to see if stroke symptoms go away.
- Assuming confusion is normal aging.
- Holding a seizing person down or putting objects in the mouth.
- Forgetting to document last known well time.
Memory hooks
- FAST: face, arm, speech, time.
- Sudden neuro change is urgent.
- Postictal means after the seizure.
Mini quiz
- What does FAST stand for?Face drooping, arm weakness, speech difficulty, time to call emergency help.
- Why is last known well time important?It helps the medical team decide what time-sensitive stroke options may apply.
- What is altered mental status?A change in alertness, awareness, behavior, or thinking.
Quick review checklist
- I can name common stroke signs.
- I can explain why sudden confusion is important.
- I can define seizure and postictal phase.