Medical College of Wisconsin
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Early patency of in situ saphenous vein bypasses as determined by intraoperative velocity waveform analysis. Ann Vasc Surg 1990 May;4(3):270-5

Date

05/01/1990

Pubmed ID

2187518

DOI

10.1007/BF02009456

Scopus ID

2-s2.0-0024995127   6 Citations

Abstract

Intraoperative velocity waveform analysis following in situ saphenous vein bypass grafting can identify abnormal hemodynamic conditions that correlate with the presence of a technical error or likelihood of perioperative thrombosis. Pulsed Doppler spectral analysis was used at operation to measure peak systolic blood flow velocity in the distal graft segment of 83 in situ saphenous vein bypasses to the popliteal (n = 35) or tibial (n = 48) arteries. Blood flow velocities were measured in the smallest diameter graft segment below the knee. Peak systolic blood flow velocity was greater than 40 cm/sec in 77 (93%) of grafts, and no early graft failures occurred. Low blood flow velocity (peak systolic blood flow velocity less than 40 cm/sec) was measured in six bypasses (7%) and was attributed to large (greater than 5 mm) vein diameter, residual hemodynamically significant lesions (intact valve leaflet, proximal arteriovenous fistula), or sclerosed vein segments. With the correction of these abnormalities, the 30 day patency for the entire series was 100%. The measurement of low blood flow velocity in the distal segment of an in situ saphenous vein bypass is an uncommon occurrence and mandates a thorough evaluation of the arterial reconstruction for correctable lesions.

Author List

Schmitt DD, Seabrook GR, Bandyk DF, Cato RF, Edwards JW, Karp DL, Block JL, Towne JB

Author

Gary R. Seabrook MD Chief, Professor in the Surgery department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Adult
Aged
Aged, 80 and over
Blood Flow Velocity
Female
Graft Survival
Humans
Intraoperative Period
Leg
Male
Middle Aged
Saphenous Vein
Surgical Procedures, Operative
Ultrasonography
Vascular Diseases
Vascular Patency
jenkins-FCD Prod-398 336d56a365602aa89dcc112f077233607d6a5abc