Brower R W, ten Katen H J, Meester G T
Am J Cardiol. 1978 Jun;41(7):1222-9. doi: 10.1016/0002-9149(78)90879-2.
A new method is described for determining localized epicardial shortening in regions newly perfused after saphenous vein bypass grafting. Four to six radiopaque markers are sutured to the ventricular epicardium in pairs, 2 cm apart and 0 to 3 cm distal to the coronary anastomosis. Shortening fraction and time to onset of shortening are reported in 56 patients examined noninvasively with use of cinefluorography 1 week to 6 months after operation. The right coronary bypass region showed the greatest improvement in shortening fraction in 6 months (from 10.1 to 16.7 percent); the left anterior descending region showed the least (but still significant) improvement (from 8.6 to 11.5 percent). Paradoxical systolic expansion occurred predominantly in the region of the left anterior descending coronary bypass (95 percent of all such occurrences). Measurement error, observer variability and beat to beat variability were less important than the physiologic changes in the postoperative period. This technique is a direct method providing heretofore unavailable follow-up information on localized shortening in newly perfused myocardium after coronary bypass grafting.
描述了一种用于确定隐静脉搭桥术后新灌注区域局部心外膜缩短的新方法。将四到六个不透射线的标记物成对缝合到心室心外膜上，相距2厘米，位于冠状动脉吻合口远端0至3厘米处。对56例患者在术后1周6个月进行了电影荧光造影检查，报告了缩短分数和缩短开始时间。右冠状动脉搭桥区域在6个月时缩短分数改善最大（从10.1%提高到16.7%）；左前降支区域改善最小（但仍显著）（从8.6%提高到11.5%）。矛盾性收缩期扩张主要发生在左前降支冠状动脉搭桥区域（占所有此类情况的95%）。测量误差、观察者变异性和逐搏变异性在术后生理变化面前不太重要。该技术是一种直接方法，提供了冠状动脉搭桥术后新灌注心肌局部缩短的此前无法获得的随访信息。
