Transient ischemic attack as a medical emergency

Area of Science:

• Neurology
• Vascular Medicine
• Medical Diagnostics

Background:

• Transient ischemic attack (TIA) presents a high risk for early stroke recurrence, necessitating urgent mechanistic clarification for diagnosis and treatment.
• Effective management of TIA is critical to prevent irreversible ischemic stroke and its debilitating sequelae.

Purpose of the Study:

• To outline diagnostic and therapeutic strategies for transient ischemic attack (TIA).
• To emphasize the importance of early risk stratification and intervention in TIA management.
• To introduce and advocate for the concept of acute cerebrovascular syndrome (ACVS) to enhance TIA awareness.

Main Methods:

• Utilizing ABCD(2) scores for early risk stratification of ischemic stroke post-TIA.
• Employing carotid ultrasonography (US) to assess internal carotid artery (ICA) stenosis, plaque characteristics, and flow.
• Leveraging transesophageal echocardiography for detecting aortogenic embolic sources and cardiac monitoring for cardioembolic TIA.
• Incorporating diffusion-weighted imaging (DWI)-MRI and MR angiography for understanding TIA mechanisms and cerebral circulation.

Main Results:

• Carotid US can identify high-risk mobile plaques, while echocardiography detects aortogenic emboli.
• Cardiac monitoring and specific blood findings aid in diagnosing cardioembolic TIA.
• DWI-MRI and MR angiography are essential for elucidating TIA mechanisms and cerebral blood flow.

Conclusions:

• Immediate initiation of antiplatelet/anticoagulant therapies and comprehensive management of risk factors (hypertension, diabetes, dyslipidemia) are vital for stroke prevention post-TIA.
• Carotid endarterectomy and endovascular interventions are critical for symptomatic patients with significant ICA stenosis.
• The novel concept of acute cerebrovascular syndrome (ACVS) aims to improve awareness and timely management of TIA as a critical window to prevent stroke.