title: Pulse-generated runoff: a new method of determining calf vessel patency.
abstract: A non-invasive method of determining calf vessel patency before femorodistal bypass has been developed. This pulse-generated runoff (PGR) system generates blood flow in patent calf arteries by means of a pulsatile cuff even if the existing Doppler signal is inaudible. PGR was compared with pre-operative arteriography in 95 ischaemic limbs and both were compared with the peripheral resistance measured at operation in 62 limbs. There was a highly significant correlation between the PGR and arteriogram scores (rs = 0.74, P less than 0.001) but PGR tended to detect more patent vessels than arteriography. The peripheral resistance correlated better with PGR than arteriography (rs = -0.71 and -0.54 respectively, P less than 0.001). PGR is a simple, non-invasive method of determining calf and foot vessel patency pre-operatively.
authors.affiliation: Department of Vascular Studies, Bristol Royal Infirmary, UK.
authors.forename: J D
authors.initials: JD
authors.lastname: Beard
authors.forename: D J
authors.initials: DJ
authors.lastname: Scott
authors.forename: J M
authors.initials: JM
authors.lastname: Evans
authors.forename: R
authors.initials: R
authors.lastname: Skidmore
authors.forename: M
authors.initials: M
authors.lastname: Horrocks
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001157:Arterial Occlusive Diseases / Q000601:surgery; D001158:Arteries / Q000473:pathology; D005260:Female; D005263:Femoral Artery; D006801:Humans; D007866:Leg / Q000098:blood supply*; D008297:Male; D008722:Methods; D008875:Middle Aged; D014463:Ultrasonography; D014654:Vascular Patency; D014655:Vascular Resistance