Diagnosis of acute stroke

Area of Science:

• Neurology
• Radiology

Background:

• Stroke is a leading cause of disability and death, with major subtypes including ischemic stroke, intracerebral hemorrhage, and subarachnoid hemorrhage.
• Ischemic stroke diagnosis relies on abrupt focal neurological deficits, commonly presenting as speech disturbance or unilateral weakness.
• Stroke mimics, such as seizures or migraines, can complicate diagnosis and require careful exclusion.

Purpose of the Study:

• To outline the diagnostic approaches for different stroke types.
• To highlight the role of neuroimaging in differentiating stroke subtypes and excluding mimics.
• To emphasize the importance of public education on stroke symptoms.

Main Methods:

• Review of common stroke presentations and diagnostic challenges.
• Discussion of neuroimaging modalities for stroke diagnosis, considering patient eligibility and contraindications.
• Description of diagnostic workup for subarachnoid hemorrhage, including noncontrast head CT and cerebrospinal fluid analysis.

Main Results:

• Ischemic stroke is characterized by sudden focal deficits; speech disturbance and hemiparesis are common.
• Neuroimaging is essential for distinguishing ischemic stroke from hemorrhage and identifying non-stroke conditions.
• Noncontrast head CT is the primary imaging for subarachnoid hemorrhage, with CSF analysis as a secondary option.

Conclusions:

• Accurate and timely diagnosis of stroke subtypes is critical for appropriate management.
• Effective differentiation of stroke from mimics and selection of optimal neuroimaging are vital.
• Public awareness of stroke symptoms can lead to earlier presentation and improved clinical outcomes.