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Transient ischemic attacks with and without a relevant infarct on computed tomographic scans cannot be distinguished
P J Koudstaal1, J van Gijn, J Lodder
1Department of Neurology, University Hospital, Rotterdam, The Netherlands.
Archives of Neurology
|September 1, 1991
Summary
Clinical presentation of cerebral infarction with transient signs (CITS) shows minor differences compared to transient ischemic attack (TIA) without infarction. Distinguishing CITS from TIA based on symptoms alone is challenging.
Area of Science:
- Neurology
- Radiology
- Clinical Medicine
Background:
- Transient ischemic attack (TIA) is a critical warning sign for stroke.
- Cerebral infarction with transient signs (CITS) represents a TIA with evidence of acute infarct on CT.
- Differentiating CITS from TIA without infarct based on clinical presentation is important for prognosis.
Purpose of the Study:
- To compare clinical and CT findings in patients with CITS, TIA without infarct, and stroke with infarct.
- To assess the ability of clinical symptoms to predict cerebral infarction on CT.
Main Methods:
- Prospective study of 79 patients with CITS.
- Comparison with 527 patients with TIA without infarct and 646 patients with stroke and infarct.
- Multicenter trial data analysis.
Main Results:
- CITS patients had slightly more hypertension history, longer TIA duration, slower symptom resolution, and more frequent speech involvement compared to TIA without infarct.
- Clinical symptoms alone were insufficient to predict cerebral infarction on CT.
- CITS patients showed slightly more abnormal speech and a higher frequency of multiple attacks compared to stroke patients with infarct.
Conclusions:
- Minor clinical differences exist between CITS and TIA without infarct, and between CITS and stroke with infarct.
- Clinical presentation alone cannot reliably predict the presence of cerebral infarction.
- Prognostic differences between these conditions may exist despite clinical similarities.