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DRIL (Distal revascularization-interval ligation) is a surgical method of treating vascular access steal syndrome.
DRIL was first proposed by Harry Schanzer and colleagues in 1988. 
A short distal bypass is created and the artery just distal to the AV anastomosis is ligated.
- Schanzer H, Schwartz M, Harrington E, Haimov M (1988). "Treatment of ischemia due to "steal" by arteriovenous fistula with distal artery ligation and revascularization.". J Vasc Surg. 7 (6): 770–3. doi:10.1067/mva.1988.avs0070770. PMID 3373618.
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