Long-Term Stroke Recurrence after Transient Ischemic Attack: Implications of Etiology / 대한뇌졸중학회지
Journal of Stroke
;
: 184-189, 2019.
Article
in English
| WPRIM
| ID: wpr-766248
ABSTRACT
BACKGROUND AND PURPOSE:
To analyze long-term stroke recurrence (SR) characteristics after transient ischemic attack (TIA) according to initial etiological classification.METHODS:
A prospective cohort of 706 TIA patients was followed up in a single tertiary stroke center. Endpoint was SR. Etiologic subgroup was determined according to the evidence-based causative classification system. Location of TIA and SR was recorded as right, left, or posterior territory. Disability stroke recurrence (DSR) was defined as modified Rankin Scale (mRS) score >1 or a one-point increase in those with previous mRS >1 at 3-month follow-up.RESULTS:
During a follow-up of 3,493 patient-years (mean follow-up of 58.9±35.9 months), total SR was 125 (17.7%), corresponding to 3.6 recurrences per 100 patient-years. The etiology subgroups with a higher risk of SR were the unclassified (more than one cause) and large-artery atherosclerosis (LAA) categories. Of the SR cases, 88 (70.4%) had the same etiology as the index TIA; again, LAA etiology was the most frequent (83.9%). Notably, cardioaortic embolism was the most frequent cause (62.5%) of SR in the subgroup of 24 patients with undetermined TIA. Overall, SR occurred in the same territory in 74 of 125 patients (59.2%), with significant differences between etiological TIA subgroups (P=0.015). Eighty-two of 125 (65.6%) with SR had DSR, without differences between etiologies (P=0.453).CONCLUSIONS:
SR occurred mainly with the same etiology and location as initial TIA, although undetermined TIA was associated with a high proportion of cardioaortic embolism SR. More than half of the recurrences caused some disability, regardless of etiology.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Recurrence
/
Ischemic Attack, Transient
/
Prospective Studies
/
Cohort Studies
/
Follow-Up Studies
/
Classification
/
Stroke
/
Embolism
/
Atherosclerosis
Type of study:
Etiology study
/
Incidence study
/
Observational study
/
Prognostic study
/
Risk factors
Limits:
Humans
Language:
English
Journal:
Journal of Stroke
Year:
2019
Type:
Article
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