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该研究的目的旨在用血管内超声(IU)对PTCA(经皮经腔冠状动脉成形术)后即刻的形态学效果进行评价和分类。用4.8 Fr、MHZ顶端旋转的血管超声系统,对PTCA后58例患者进行了即刻检查。其在10名患者(17%)因IU图象不清而未能分析。对其余48例(83%,男40例,女8例,平均年龄55±9岁),PTCA的血管段,以及该段的远端及近端的IU图象进行了分析。其中左前降支动脉30例,右冠状动脉17例,左冠状动脉主干1例。48例PTCA中,32例(67%)之血管段出现Ca(?)。中心型斑块18例(38%),偏心型30例(62%),有7个特殊的斑块类型。中心型斑块中,斑块紧缩但无血管壁改变(Ⅰ型)2例(4%);斑块表面撕裂(Ⅱ型)1例(2%),8例(17%)斑块深部撕裂(Ⅱ型),深部撕裂波及中膜或内膜(Ⅳ型)2例(4%)。斑块与血管壁之间的内膜无
The aim of this study was to evaluate and classify the immediate morphological effects of PTCA (percutaneous transluminal coronary angioplasty) with intravascular ultrasound (IU). Fifty-eight patients with PTCA underwent an immediate examination with a 4.8 Fr, MHZ apical rotation vascular ultrasound system. It was not analyzed in 10 patients (17%) due to unclear IU images. The remaining 48 cases (83%, 40 males, 8 females, mean age 55 ± 9 years), the vascular segments of PTCA, and distal and proximal IU images of this segment were analyzed. Among them, there were 30 cases of left anterior descending artery, 17 cases of right coronary artery and 1 case of left main coronary artery. Of the 48 PTCA cases, Ca (?) Appeared in 32 (67%) of the vascular segments. There were 18 cases (38%) of central plaques, 30 cases (62%) of eccentric cases and 7 special plaque types. In the central plaque, plaque was compressed but no vascular wall was changed (type Ⅰ) in 2 cases (4%); plaque surface was torn (type Ⅱ) in 1 case (2%) and in 8 cases (17% Tear (type Ⅱ), deep tearing and medial or tunica intima (type Ⅳ) in 2 cases (4%). Intima between plaque and vessel wall None