PMID: 1199929Nov 1, 1975Paper

Effect of direct revascularization surgery on coronary collateral circulation in man

The American Journal of Cardiology
J R SeeR S Cosby

Abstract

In 63 consecutive patients with significant coronary artery disease (more than 75 percent stenosis), the effects of direct myocardial revascularization on coronary collateral channels were studied 6 to 29 days (mean 13.4 days) after operation. Collateral vessels were identified preoperatively and their angiographic regression or reappearance after operation was noted. In 15 patients (23 percent), there was no evidence of collateral flow before or after operation. The remaining 48 patients had 186 collateral channels preoperatively. Postoperatively, 84 (45 percent) of these collateral vessels were no longer apparent, 75 (40 percent) were unchanged and 27 (15 percent) were identical with the preoperative vessels but the pattern of blood flow was reversed. The findings suggest that in the presence of established collateral channels, direct revascularization acutely alters existing flow and pressure gradients in a complex manner. Collateral channels disappear or remain unchanged when a gradient is decreased or maintained; collateral flow is reversed when a gradient is increased. These data may permit (1) objective preoperative estimation of distal vessel runoff in vessels with collateral channels, and (2) evaluation of the complete...Continue Reading

References

Jul 1, 1974·Chest·R S CosbyJ R See
Jan 1, 1974·The American Journal of Cardiology·R A HeinleR Gorlin
Feb 1, 1972·The American Journal of Cardiology·G C MorrisJ M Lewis
Aug 1, 1970·Annals of Internal Medicine·R H HelfantR Gorlin
Jun 10, 1971·The New England Journal of Medicine·R H HelfantR Gorlin

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Citations

Jun 1, 1992·Catheterization and Cardiovascular Diagnosis·V P MolesA K Pande
Dec 22, 2011·International Journal of Vascular Medicine·Masahiro Murakami
Jun 1, 1981·The Journal of Surgical Research·R J DamianoJ L Cox
Nov 4, 1976·The American Journal of Cardiology·D H Spodick
Aug 1, 1982·Australian and New Zealand Journal of Medicine·Z Freeman, A Freeman
Jan 1, 1981·Scandinavian Journal of Thoracic and Cardiovascular Surgery·T Ivert, C Landou

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