CBS 2019
CBSMD教育中心
English

科学研究

科研文章

荐读文献

The Comparison of Clinical Outcomes After Drug-Eluting Balloon and Drug-Eluting Stent Use for Left Main Bifurcation In-Stent Restenosis A Case of Pulmonary Hypertension Associated with Idiopathic Hypereosinophilic Syndrome Lysed Erythrocyte Membranes Promote Vascular Calcification: Possible Role of Erythrocyte-Derived Nitric Oxide Real-world clinical utility and impact on clinical decision-making of coronary computed tomography angiography-derived fractional flow reserve: lessons from the ADVANCE Registry Increased pulmonary serotonin transporter in patients with chronic obstructive pulmonary disease who developed pulmonary hypertension The Relation Between Optical Coherence Tomography-Detected Layered Pattern and Acute Side Branch Occlusion After Provisional Stenting of Coronary Bifurcation Lesions Influence of Heart Rate on FFR Measurements: An Experimental and Clinical Validation Study Diagnosis of ischemia-causing coronary stenoses by noninvasive fractional flow reserve computed from coronary computed tomographic angiograms. Results from the prospective multicenter DISCOVER-FLOW Nicotine promotes vascular calcification via intracellular Ca21-mediated, Nox5-induced oxidative stress, and extracellular vesicle release in vascular smooth muscle cells Evolving understanding of the heterogeneous natural history of individual coronary artery plaques and the role of local endothelial shear stress
|<<... 141 142 143 144 145 146 147 ...>>|

Clinical Trial1998 Aug;19(8):1224-31.

JOURNAL：Eur Heart J. Article Link

Treatment of calcified coronary lesions with Palmaz-Schatz stents. An intravascular ultrasound study

Hoffmann R, Mintz GS, Popma JJ et al. Keywords: calcified coronary lesions; intracoronary stents, IVUS, rotational atherectomy

ABSTRACT

AIMS - To evaluate the result of coronary stenting in calcified lesions and to find morphological and procedural factors influencing the final result.


METHODS AND RESULTS - Three hundred and twenty three native coronary artery lesions in 303 patients (197 men, mean age 63.9 +/- 11.5 years) treated with Palmaz-Schatz stents were differentiated into four groups depending on their degree of circumferential calcification as defined by intravascular ultrasound [0-90 degrees (n=120), 91-180 degrees (n=58, 181-270$ (n=71) and 271-360 degrees n=74)]. In 117 lesions rotational atherectomy was used prior to stent placement. Intravascular ultrasound and quantitative angiography were performed prior to treatment and after stent placement to measure minimal and maximal lumen diameter and lumen cross-sectional area at the lesion site and the reference segments. Acute lumen gain and eccentricity index were calculated. Although higher balloon pressures were used than in the minimally calcified lesions. the final angiographic minimal lumen diameter decreased with increasing arc of calcification (3.01 +/- 0.47, 3.04 +/- 0.43, 2.85 +/- 0.53, 2.83 +/- 0.40 mm, respectively, P=0.0320) resulting in a decrease in acute diameter gain with increasing arc of calcification (2.06 +/- 0.51, 1.91 +/- 0.46, 1.81 +/- 0.56, 1.78 +/- 0.51 mm, respectively, P=0.0067). Adjunctive rotational atherectomy prior to stent placement resulted in a greater acute diameter and a greater lumen cross-sectional area gain, coupled with less final residual stenosis than pre-treatment with balloon angioplasty.

CONCLUSION - Implantation of stents in calcified lesions results in less optimal stent expansion, especially in lesions with thick, eccentric calcific plaque layers. Use of adjunctive rotational atherectomy before stent placement may improve the procedural result.
>CBS CBS 2019

> CBS 2019

> CBS 2019 注册

> CBS 2019 会议日程

> CBS 2019 学术征集

> CBS 2019 热点

 CBSMD

> CBSMD 网站注册

> 教育中心

> 荐读文献

> Top 10 阅读文献

> 文献导读
CBS 2019 CBS 2019 主席团 教育中心 科研动态
Copyright ⓒ CBS MD Nanjing China. All rights reserved. 京ICP备16025898号-11
联系我们| Top