Intravascular ultrasound study of acute coronary syndrome and stable angina
- VernacularTitle:急性冠状动脉综合征与稳定型心绞痛患者冠状动脉病变的血管内超声比较研究
- Author:
Junxia LI
;
Takatsu RYOUZYUTSU
;
Miyamoto ZYUUSI
- Publication Type:Journal Article
- Keywords:
Endosonography;
Coronary disease
- From:Chinese Journal of Ultrasonography
1993;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the pathologic characteristics of acute coronary syndrome(ACS) and stable angina(SA) through intravascular ultrasound(IVUS). Methods The study consisted of 131 coronary disease patients who underwent coronary artery angiography (CAG)and IVUS, ACS was diagnosed in 52 cases (unstable angina 34 cases and acute myocardial infarction 18 cases) and SA in 79 cases. IVUS examinations: plaque was classified into 3 types according to different ultrasound patterns of tissue reflection. (1) Calcification plaque appeared on ultrasound as an intense characteristic echo reflection with dropout of echoes peripherally, which was termed shadowing. (2)Hard plaque appeared on ultrasound as an intense echo reflection greater than the adventitia echogenicity.(3)Soft plaque appeared on ultrasound as an echo reflection weaker than the adventitia echogenicity. Unstable plaque was lipid-rich pool and thin fibrotic cap and plaque rupture, stable plaque was calcification plaque and hard plaque. Results Patients with ACS had more unstable plaque. 61.5% patients with ACS and 38.0% patients with SA had soft plaque(P
