steal syndrome
Pathological condition where blood flow is diverted from one vascular territory to another, causing relative ischemia.
Full Definition
Steal syndrome refers to a hemodynamic phenomenon where blood flow is inappropriately redirected from one vascular territory to another area of lower resistance, resulting in relative ischemia of the original territory. This condition commonly occurs in various clinical contexts, including subclavian steal (where retrograde vertebral flow supplies the arm), coronary steal (where collateral flow diverts from ischemic myocardium), and dialysis access steal (where arteriovenous access diverts flow from distal circulation). The syndrome can develop gradually or acutely and may require intervention to restore appropriate flow distribution and relieve ischemic symptoms.
Usage
Usage note: Always specify anatomical location and type of steal phenomenon; distinguish from simple stenosis.
In Context
- "Duplex ultrasound confirmed subclavian steal syndrome with retrograde vertebral artery flow during arm exercise." — Vascular laboratory report
- "The patient developed hand ischemia secondary to dialysis access steal syndrome requiring revision." — Nephrology consultation note