Partial anterior circulation infarct

Partial anterior circulation infarct (PACI) is a type of cerebral infarction affecting part of the anterior circulation supplying one side of the brain.

Partial anterior circulation infarct
Circle of Willis. Anterior circulation represented by top half of diagram.
Specialty	Neurology

Partial anterior circulation stroke syndrome (PACS) refers to the symptoms of a patient who clinically appears to have suffered from a partial anterior circulation infarct, but who has not yet had any diagnostic imaging (e.g. CT Scan) to confirm the diagnosis.

It is diagnosed by any one of the following

• 2 out of 3 features of
  • Higher dysfunction
    • Dysphasia
    • Visuospatial disturbances
  • Homonymous hemianopia
  • Motor and Sensory Defects (>2/3 of face, arm, leg)
• Higher dysfunction alone
• Partial Motor or Sensory Defect

If all of the above symptoms are present, a Total Anterior Circulation Infarct is more likely.

For more information, see stroke.