1. Intraoperative detection of intimal lipid in the radial artery predicts degree of postoperative spasm

    Background: The radial artery's (RA) tendency to spasm when used as a bypass graft may relate to features of the RA itself. We imaged RA conduits before and after CABG in order to characterize intimal abnormalities that might relate to the risk of spasm.Methods: RA conduits from thirty-two CABG patients were imaged intraoperatively using catheter-based optical coherence tomography (OCT) and again on day 5 using 64-channel MDCT angiography. The change in luminal diameter between timepoints was measured in the proximal, mid and distal RA. “Spasm” was defined as focal or diffuse luminal narrowing to a diameter less than ...
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