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Long-term outcome following attendance at a transient ischemic attack clinic
Alan C Cameron1, Jesse Dawson, Terence J Quinn
1Division of Cardiovascular and Medical Sciences, Gardiner Institute, Faculty of Medicine, University of Glasgow, Glasgow, UK.
Summary
Patients attending transient ischemic attack (TIA) clinics with non-TIA diagnoses face high cardiovascular event risks. Early assessment and risk reduction strategies are crucial for all TIA clinic attendees.
Area of Science:
- Neurology
- Cardiology
- Public Health
Background:
- Transient ischemic attack (TIA) clinics often see patients with noncerebrovascular diagnoses.
- Long-term outcomes for patients with non-TIA diagnoses in TIA clinics are not well-established.
- This study investigates outcomes in patients referred to a TIA clinic with suspected TIA.
Purpose of the Study:
- To evaluate the long-term cardiovascular and neurological outcomes.
- To compare outcomes between patients with transient ischemic attack (TIA) and noncerebrovascular diagnoses (non-TIA).
- To assess risks relative to hypertensive controls.
Main Methods:
- Clinical classification of patients into TIA, stroke, or non-TIA groups.
- Follow-up via electronic record linkage.
- Primary endpoint: cardiovascular death or major cardiovascular event; Secondary endpoints: incident neurological disease, pacemaker insertion. Cox proportional hazards models used for comparison.
Main Results:
- Of 3533 patients, 53.5% had a TIA diagnosis.
- Non-TIA patients had a 27.9% cardiovascular endpoint rate vs. 40.7% for TIA patients (HR 1.53).
- Cardiovascular mortality was higher in both groups than in hypertensive controls; non-TIA patients had higher risk of nonstroke neurological events.
Conclusions:
- Patients without a TIA diagnosis referred to TIA clinics have elevated vascular event risk, exceeding that of hypertensive individuals.
- Comprehensive cardiovascular risk assessment is recommended for all TIA clinic attendees.
- Exploration of risk reduction strategies for these patients is warranted.
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