Ioseliani D G, Kliuchnikov I V, Koval A N, Smirnov M Iu
Kardiologiia. 1992;32(11-12):46-9.
Sixteen patients with the X syndrome underwent thallium-201 myocardial scintigraphy. Eleven patients with one-coronary artery disease served as a control group. During bicycle ergometry all the 16 patients showed various degrees of local myocardial perfusion impairments. The foci were located in the basins of various coronary vessels. Impaired myocardial perfusion in patients with the X syndrome was similar to that in patients with moderate, but hemodynamically significant stenosis of a coronary artery. At the same time the impairments were significantly less pronounced than in those with critical stenosis of a coronary artery. Thus, patients with the X syndrome have not only clinical signs of coronary heart disease (anginal episodes), but they also have marked myocardial perfusion impairments during exercise.
16例患有X综合征的患者接受了铊-201心肌闪烁扫描。11例患有单支冠状动脉疾病的患者作为对照组。在自行车测力计运动期间，所有16例患者均表现出不同程度的局部心肌灌注受损。病灶位于不同冠状动脉血管的供血区域。X综合征患者的心肌灌注受损情况与中度但血流动力学上有显著意义的冠状动脉狭窄患者相似。同时，这些受损情况明显不如冠状动脉严重狭窄患者明显。因此，X综合征患者不仅有冠心病的临床症状（心绞痛发作），而且在运动期间也有明显的心肌灌注受损。
