Chapter 18 - Altered Mental Status, Stroke, and Headache Flashcards Preview

EMS > Chapter 18 - Altered Mental Status, Stroke, and Headache > Flashcards

Flashcards in Chapter 18 - Altered Mental Status, Stroke, and Headache Deck (11)
Loading flashcards...
1

altered mental status

a variation from normal function of the minds judged by a persons behavior, appearance, speech, memory, judgement, or responsiveness to stimuli; altered mental status may range from disorientation to total unresponsiveness or unconsciousness.

2

coma

an unconscious state in which a person does not respond to any stimulus, including pain.

3

embolic stroke

a type of ischemic stroke caused by plaque or other material that lodges in a blocks a cerebral artery.

4

hemorrhagic stroke

a stroke caused by rupture of a blood vessel in the brain that allows blood to leak and collect in or around the brain tissue.

5

ischemic stroke

a stroke caused by a clot obstructing a blood vessel in the brain, resulting in an inadequate amount of blood being delivered to a portion of the brain distal to the blocked vessel.

6

neurological deficit

any deficiency in the nervous systems functioning, typically exhibited as a motor, sensory, or cognitive deficit.

7

non traumatic brain injury

a medical injury to the brain that is not caused by external trauma. Stroke is an example of a non traumatic brain injury.

8

reticular activating system (RAS)

a network of specialized nerve cells within the brainstem that controls states of arousal and consciousness including wakefulness, attentiveness, and sleep.

9

stroke

a sudden disruption in blood flow to the brain that results in brain cells damage. Blood flow might be interrupted by a ruptured artery or blocked by a clot or other foreign matter in an artery that supplies the brain.

10

thrombotic stroke

a type of ischemic stroke caused by a stationary clot that forms in and blocks a cerebral artery.

11

transient ischemic attack (TIA)

brief, intermittent episode with stroke like symptoms that typically disappear within minutes, but usually lasts no longer than 1 hour. TIAs are caused by an oxygen deficit in the brain tissue (ischemia) and are often a precursor to a stroke.