RT Book, Section A1 Schwinghammer, Terry L. A1 DiPiro, Joseph T. A1 Ellingrod, Vicki L. A1 DiPiro, Cecily V. SR Print(0) ID 1178896158 T1 Stroke T2 Pharmacotherapy Handbook, 11e YR 2021 FD 2021 PB McGraw Hill PP New York, NY SN 9781260116694 LK accesspharmacy.mhmedical.com/content.aspx?aid=1178896158 RD 2024/04/24 AB Stroke involves the abrupt onset of focal neurologic dysfunction that lasts at least 24 hours and is caused by cerebral, spinal, or retinal infarction. Stroke can be either ischemic or hemorrhagic. Transient ischemic attacks (TIAs) are focal ischemic neurologic deficits lasting <24 hours and usually <30 minutes.