相关实验视频
Updated: Jan 31, 2026

08:22
Permanent Cerebral Vessel Occlusion via Double Ligature and Transection
Published on: July 21, 2013
15.7K
对于中等大小的大脑血管封闭的血栓切除术:大小确实很重要
Pekka Virtanen1, Silja Räty2, Liisa Tomppo2
1Department of Radiology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
European stroke journal
|January 30, 2026
概括
选择内血管血栓切除术 (EVT) 设备的正确尺寸对于中等血管封闭 (MeVO) 是至关重要的. 显著的尺寸不匹配会增加出血的风险和中风治疗中无效的结果.
科学领域:
- 神经学 神经学
- 干预性放射学 干预性放射学
- 血管医学 血管医学
背景情况:
- 对于中等血管封闭 (MeVO) 的内血管血栓切除 (EVT) 试验显示出不同的结果.
- 设备与容器尺寸比对MeVO结果的影响尚不清楚.
研究的目的:
- 调查设备与血管大小比率与M2段中脑动脉封闭的EVT结果之间的关联.
- 为了确定血栓切除装置和封闭血管之间的较大尺寸差异是否会影响虚无性和症状性内出血 (sICH).
主要方法:
- 对146名患有M2闭塞的EVT治疗患者进行了回顾性单中心观察性研究.
- 根据设备与容器大小比率 (≤1.0,1.0-1.2,>1.2) 将患者分为三组.
- 主要结局:无用性 (修改的兰金尺度5-6在3个月) 和SICH.
主要成果:
- 与其他组相比,C组 (比率>1.2) 的sICH (20.0%) 和徒劳率 (34.2%) 较高.
- 经过调整后的分析显示,属于C组的人与SICH (OR 3.32) 和徒劳 (OR 2.84) 有着显著的关联.
- 大多数患者 (58.9%) 属于A组 (比率≤1.0).
结论:
- 对于MeVO而言,EVT中的设备与容器尺寸比是重要的因素.
- 较大的相对器械尺寸与出血并发症和徒劳结果的风险增加有关.
- 根据血管大小优化设备选择可能会改善中风治疗结果.
相关概念视频
Cell Size
127.2K
Cell sizes vary widely among and within organisms. Bacterial cells range between 1-10 micrometers (μm)and are considerably smaller than most eukaryotic cells. The smallest bacteria are 0.1 μm in diameter—about a thousand times smaller than eukaryotic cells, which typically range from 10-100 μm.
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...
127.2K
Brick Sizes
342
Brick sizing plays a crucial role in construction, influencing both the aesthetics and structural integrity of buildings. Bricks are defined by three dimensions: width, thickness, and length. They are commonly designed to fit modular measurements, typically in multiples of 4 inches or 8 inches in width, to facilitate uniform construction and compatibility with other building materials.
Modular bricks are the most common type and are sized to include the mortar joint, which is essential for...
Modular bricks are the most common type and are sized to include the mortar joint, which is essential for...
342
Genome Size and the Evolution of New Genes
9.1K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.1K
Genome Size and the Evolution of New Genes
3.4K
3.4K
Maximum Size of Aggregate
554
The maximum size of aggregate is defined as the aperture of the sieve retaining 15 percent or more of the particles present in the aggregate sample. The aggregate's maximum size impacts the concrete's water requirement, workability, and strength. Larger aggregates reduce the surface area needing cement paste coverage, which can lower water needs, thereby allowing a decrease in the water-to-cement ratio when the desired workability and richness of the mix are to be maintained, which can...
554
Sample Size Calculation
6.7K
Knowledge of the sample size is the first requirement to conduct random sampling or an experiment. The sample size is the total number of units, observations, or groups (in some cases) used to get the data to estimate a population parameter. As the name suggests, the sample size is that of the sample drawn from the population and differs from the population size.
The sample size for the given experiment or sampling effort is fundamental to any study design. Sample size decides the number of...
The sample size for the given experiment or sampling effort is fundamental to any study design. Sample size decides the number of...
6.7K

