相关实验视频
Updated: Jan 31, 2026

07:45
Acute Myocardial Infarction in Rats
Published on: February 16, 2011
54.6K
内血管治疗后的出血转变:基线心脏病发作量比心脏病发作增长率更好地预测心脏病发作量
Mathilde Méot1, Fanny Munsch2, Bertrand Lapergue3
1Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France.
European stroke journal
|January 30, 2026
概括
在接受内血管治疗的大血管封闭性中风患者中,较快的心脏病增长率 (IGR) 与更高的出血转化 (HT) 风险有关. 然而,基线心脏病发作体积比IGR更可靠地预测HT.
科学领域:
- 神经学 神经学
- 放射学 放射学是一门学科.
- 心血管医学 心血管医学
背景情况:
- 输血转变 (HT) 是缺血性中风后的一个重要并发症.
- 预测HT,特别是使用成像特征,如心脏病增长率 (IGR),对于治疗规划至关重要.
- 在接受内血管治疗 (EVT) 的大血管封闭性中风 (LVOS) 中预测HT的IGR作用需要进一步调查.
研究的目的:
- 调查IGR对先前循环LVOS接受EVT的患者后续HT风险的影响.
- 为了比较IGR的预测能力与HT的基线心脏病发作量,在这个患者群体中.
主要方法:
- 对前性收集的FRAME和ETIS数据库进行二次分析 (n=775).
- 纳入标准:前部循环LVOS,目击发病,基线MRI在24小时内,第一天成像可用.
- 排除标准:后部循环LVOS,远端闭塞,并列闭塞,发病时间不明.
- 主要终点:在第一天成像时任何HT. 二级终点:对细胞血液瘤 (PH1/PH2).
- 用于评估IGR和HT结果之间的关联的物流回归模型.
主要成果:
- 更快的IGR独立地与任何HT的更高风险相关 (aOR为每日志单位增加1.35).
- 在单变量分析中,IGR与对细胞出血有显著的关联,但在多变量分析中没有.
- 接收器操作特征 (ROC) 分析表明,与IGR相比,基线心脏病发作体积是任何HT和PH发生的明显更好的预测指标 (p=0.019和p=0.029).
结论:
- 在接受EVT治疗的前部循环LVOS患者中,IGR与HT风险增加有显著的关联.
- 在这个队列中,基线心脏病发作量表明HT的预测能力优于IGR.
相关概念视频
Bacterial Transformation
59.9K
In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
59.9K
Reaction Rate
63.0K
The rate of reaction is the change in the amount of a reactant or product per unit time. Reaction rates are therefore determined by measuring the time dependence of some property that can be related to reactant or product amounts. Rates of reactions that consume or produce gaseous substances, for example, are conveniently determined by measuring changes in volume or pressure.
The mathematical representation of the change in the concentration of reactants and products, over time, is the rate...
The mathematical representation of the change in the concentration of reactants and products, over time, is the rate...
63.0K
Temperature Dependence on Reaction Rate
89.0K
The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
89.0K
Population Growth
28.4K
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
28.4K
Transformers
1.8K
A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
1.8K
Transformation
1.1K
Microbial communities are dynamic environments where cell lysis releases free DNA into the surroundings. Other cells can take up this extracellular DNA through a process known as transformation.When a cell incorporates this foreign DNA into its genome, resulting in genetic modification, the process is known as transformation. Cells capable of this process are termed competent. Competence can be natural, as observed in certain bacteria and archaea, or artificially induced in the...
1.1K

