Utility of bilateral coronary injections during complex coronary angioplasty

We describe a technique useful in complex coronary interventions wherein ti med bilateral contrast injections are given in both coronary arteries, This technique is useful in chronic total occlusions in which the distal corona ry vessel is not visualized except by collateral filling via the contralate ral artery. This technique was applied in 12 patients; 11 with native coron ary occlusion and one in whom the target site was visualized by contrast in jections into a vein graft supplying competitive flow to an otherwise paten t native vessel. With this technique, the distal coronary artery segment ca n be better visualized, which helps to aim and track the guide wire across the occluded segment.