在 (32) Pβ发射支架安置后的晚期动脉反应 (6个月和12个月):持续的亲密抑制与不完全愈合
1Department of Cardiovascular Pathology, Armed Forces Institute of Pathology, Washington, DC, USA.
Circulation
|April 11, 2001
概括
放射性支架的长期研究表明,它们可以在长达12个月的时间内抑制neointimal的生长. 然而,延迟愈合和边缘效应仍然存在,这表明β发射支架的潜在长期并发症.
科学领域:
- 心血管研究的心血管研究.
- 医疗器械技术 医疗器械技术
- 放射学 放射学是一门学科.
背景情况:
- 之前的研究表明,随着支架输送的支架疗法,neointimal增长减少.
- 人们担心内脏愈合的延迟,质疑抑制的持久性.
研究的目的:
- 为了研究β发射放射性支架在子下动脉中的长期组织学影响.
主要方法:
- (32) Pβ发射型支架 (6,24,48微Ci) 植入子腹动脉中.
- 对照的非放射性支架用于比较.
- 在6个月和12个月进行了组织学评估,形态测量和内皮细胞化分析.
主要成果:
- 在6个月和12个月的24-和48微C stent中观察到>50%的亲密生长和光狭窄.
- 观察到内脏愈合的延迟,内皮细胞不完全结合,以及持续的纤维素血栓.
- 支架边缘狭窄,涉及亲密加厚和负动脉重塑,发生在12个月.
结论:
- 亲密生长的抑制持续了6个月和12个月的32) Pβ发射支架放置后.
- 延迟动脉愈合,不完整的内皮质化和边缘效应仍然是令人担忧的重要问题.
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