Caliskan Aytac, Unal Ertekin Utku, Kubat Emre, Aytekin Bahadir, Turkcan Basak Soran, Kiris Erman Sureyya, Tola Muharrem, Iscan Hakki Zafer
Cigli District Training Hospital, Cardiovascular Surgery, Izmir, Turkey.
Turkey Yuksek Ihtisas Training and Research Hospital, Cardiovascular Surgery Ankara, Turkey.
Braz J Cardiovasc Surg. 2018 Nov-Dec;33(6):567-572. doi: 10.21470/1678-9741-2018-0001.
In this study we try to observe the fate of the left internal thoracic artery grafts that were bypassed to left anterior descending artery with moderate stenosis identified with fractional flow reserve (FFR) technique. Doppler ultrasonography was chosen as a noninvasive screening method.
A total of 30 patients who underwent coronary artery bypass grafting depending on results of the fractional flow reserve between January 2007 and January 2012, were subjected to transthoracic color Doppler ultrasonographic evaluation irrespective of the presence of symptoms, and the presence of a systolic-diastolic flow pattern was investigated using the supraclavicular approach.
The left internal thoracic artery graft was found to be functional in 63.3% of patients within a mean period of 35.1±19.7 months between coronary bypass and color Doppler ultrasonography. This period was found to be 29.4±19.6 months in the functional graft group, and 44.7±16.6 months in the dysfunctional graft group (P=0.046). Preoperative complaints of angina were reported to fall from 88.9% to 16.7% in the functional graft group, when compared to the postoperative period (P<0.001), but fell from 90.9% to 36.4% in the dysfunctional graft group (P=0.034).
Functional left internal thoracic artery graft rates of the study population were found to be lower than the studies reported in the literature.
在本研究中，我们试图观察通过血流储备分数（FFR）技术确定为中度狭窄的、绕过左前降支的左胸廓内动脉移植物的转归情况。选择多普勒超声作为一种非侵入性筛查方法。
2007年1月至2012年1月期间，共有30例根据血流储备分数结果接受冠状动脉旁路移植术的患者，无论有无症状均接受经胸彩色多普勒超声评估，并采用锁骨上入路研究收缩-舒张血流模式的存在情况。
在冠状动脉旁路移植术与彩色多普勒超声检查之间的平均35.1±19.7个月期间，发现63.3%的患者左胸廓内动脉移植物功能良好。在功能良好的移植物组中，这一时期为29.4±19.6个月，在功能不良的移植物组中为44.7±16.6个月（P=0.046）。据报告，功能良好的移植物组术前心绞痛主诉从88.9%降至术后的16.7%（P<0.001），而功能不良的移植物组从90.9%降至36.4%（P=0.034）。
研究人群中功能良好的左胸廓内动脉移植物率低于文献报道的研究。
