TIA-TRANSIENT ISCHEMIC ATTACK

SUMMARY

1. Brain ischemia without infarction has been recently defined by the American Stroke Association as a transient ischemic attack (TIA).

2. Note that the latest guideline on TIA from the American Stroke Association has removed all references to duration of symptoms.
3. Ischemic stroke has been defined as infarction and may result in temporary or permanent cognitive, motor, and/or sensory deficits.

4. There are usually no lesions on neuroimaging, however ~30% of patients with resolved symptoms have a diffusion lesion on MRI.

5. Average duration of TIA is ~ 10 min.

Reference(s)

Wilkinson, I., Furmedge, D. and Sinharay, R. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press. Get it on Amazon.
Feather, A., Randall, D. and Waterhouse, M. (2020). Kumar And Clark’s Clinical Medicine. 10th ed. S.L.: Elsevier Health Sciences. Get it on Amazon.
Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy.
Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021].