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Transient ischemic attack

Summary of Transient ischemic attack
A transient ischemic attack is a transient episode of neurologic dysfunction caused by ischemia – either focal brain, spinal cord, or retinal – without acute infarction. TIAs have the same underlying cause as strokes: a disruption of cerebral blood flow. Symptoms caused by a TIA resolve in 24 hours or less. TIAs cause the same symptoms associated with stroke, such as contralateral paralysis or sudden weakness or numbness. A TIA may cause sudden dimming or loss of vision (amaurosis fugax), aphasia, dysarthria and mental confusion. But unlike a stroke, the symptoms of a TIA can resolve within a few minutes or within 24 hours. Having a TIA is a risk factor for eventually having a stroke or a silent stroke.

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Pathology

Nervous system

Central nervous system disorders
Central and peripheral nervous system disorders
Peripheral nervous system disorders
Autonomic nervous system disorders
Nervous system pathology review

Assessments
Transient ischemic attack

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Questions

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High Yield Notes
18 pages
Flashcards

Transient ischemic attack

7 flashcards
Preview

The duration of a transient ischemic attack is typically shorter than hours, but new guidelines differentiate these episodes from strokes based on the lack of permanent brain injury.

Questions

USMLE® Step 1 style questions USMLE

7 questions

USMLE® Step 2 style questions USMLE

6 questions
Preview

A 68-year-old woman is brought to the emergency department following a fall earlier this morning. She explains that she got out of bed a bit quicker than she normally does, and felt the room spinning before her knees buckled and she fell to the floor. She continued to feel the room spinning for around 10 minutes before her symptoms resolved. On examination, there is a mild laceration above her right eye. She is otherwise stable and has no evidence of any orthopedic trauma. The Dix-Hallpike maneuver and supine roll test are both negative, and there is no nystagmus or problems with hearing. Her past medical history includes coronary artery disease, hypertension, and type 2 diabetes mellitus. Which of the following is the most likely cause of this woman's fall?

External References