简化静脉外流:延长的静脉过渡作为一种与急性中风结果相关的新型定性标记
Vivek S Yedavalli1, Dhairya A Lakhani, Manisha Koneru2
1Department of Radiology and Radiological Sciences, Johns HopkinsSchool of Medicine, USA.
The neuroradiology journal
|July 27, 2024
概括
在CT输液成像上延长的静脉过渡 (PVT) 显示了急性缺血性中风患者治疗血栓切除术时与神经不良结果的适度相关性. 这一发现表明PVT可能有助于预测患者的预后.
科学领域:
- 神经成像是一种神经成像.
- 脑卒中医学 脑卒中医学
- 放射学 放射学是一门学科.
背景情况:
- 延长静脉通行 (PVT),一个CT输液参数,评估静脉外流.
- PVT被定义为在上侧斜上部和/或扭头上最大10秒的时间.
- PVT可能有助于对急性缺血性中风的神经预测.
研究的目的:
- 调查PVT和神经功能结果之间的相关性.
- 评估PVT在经过血栓切除术治疗的急性缺血性中风患者中的实用性.
主要方法:
- 对前性收集的大血管封闭性中风患者数据库的回顾性分析.
- 使用斯皮尔曼等级和点-双序列方法进行相关性分析.
- 根据90天修改的兰金得分 (mRS),死亡率和功能性结果差的PVT状态的评估.
主要成果:
- 在PVT和90天的mRS (r = 0.35,p < 0.0001) 之间发现了温和而显著的相关性.
- 此外,PVT与死亡率 (r = 0.26,p = 0.002) 和功能表现不佳 (r = 0.27,p = 0.002) 都有显著的相关性.
- 这些相关性在128名分析患者中观察到.
结论:
- PVT显示了与神经功能结果的严重程度的轻微,显著的关联.
- PVT是一种易于评估的定性指标,可以帮助预测患者的临床过程.
- 需要进一步的研究来确定PVT在临床决策中的作用.
相关概念视频
Regulation of Stroke Volume
7.6K
The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
7.6K
Venous Thrombosis I: Introduction
834
Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
834
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
470
The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
470
Venous Thrombosis III: Interprofessional Care
482
Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
482
Ischemic Stroke ll: Pathophysiology
74
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
74
Hemorrhagic Stroke ll: Pathophysiology
57
A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
57


