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関連する概念動画

Blood Flow01:29

Blood Flow

Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
Heart Valves01:16

Heart Valves

The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Structure of Blood Vessels01:15

Structure of Blood Vessels

Blood is circulated throughout the human body through a network of blood vessels called the circulatory system. This system includes arteries that transport blood from the heart to various body parts. These arterial pathways divide into smaller vessels until they reach the arterioles, which further split into capillaries. It is within these minuscule capillaries that the exchange of nutrients and waste products takes place. After this exchange, the blood is collected by venules, which fuse to...
Veins01:17

Veins

Veins are an integral part of our circulatory system, serving as the blood vessels that transport blood from all body regions to the heart. They are a network of hollow tubes that carry blood low in oxygen from the body's cells back to the heart for reoxygenation. Veins are crucial for maintaining the body's overall fluid balance and the continuous circulation of blood.
Structure of Veins:
The structure of veins is specifically designed to assist in the low-pressure transportation of blood...
Arteries of the Upper Limbs01:12

Arteries of the Upper Limbs

The subclavian artery transitions into the axillary artery as it exits the chest and enters the axillary region. This artery is critical for supplying blood to the shoulder area, including the head of the humerus, through the humeral circumflex arteries. As the vessel continues into the upper arm or brachium, it becomes the brachial artery. This artery plays a key role in vascularizing the brachial region and bifurcates at the elbow into several branches. These branches include the deep...
Veins of Upper Limbs01:17

Veins of Upper Limbs

The human circulatory system, a marvel of biological engineering, is a complex network of vessels that transport blood throughout the body. Among these, the veins responsible for carrying blood from the upper limbs are divided into two categories: deep and superficial.
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...

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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
13:07

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Published on: January 15, 2022

動脈静脈の変形症である.

Ian G Fleetwood1, Gary K Steinberg

  • 1Department of Neurosurgery and Stanford Stroke Center, Stanford University, Stanford, CA 94305-5327, USA.

Lancet (London, England)
|March 19, 2002
PubMed
まとめ
この要約は機械生成です。

脳動脈静脈異常 (AVM) は,0.01-0.50%の患者に影響する血管の欠陥であり,しばしば出血または発作を呈する. 治療の進歩は,これらの複雑な血管損傷に対して,効果的な多学科的な選択肢を提供します.

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Point-of-Care Ultrasound for Peripheral Veno-Arterial Extracorporeal Membrane Oxygenation Without Left Ventricular Venting

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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Published on: January 15, 2022

Particle Image Velocimetry Investigation of Hemodynamics via Aortic Phantom
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科学分野:

  • 神経学 神経学とは
  • 血管外科 血管外科
  • 放射線学 放射線学

背景:

  • 脳動脈静脈変形 (AVM) は先天的な血管病変であり,人口の0.01-0.50%に影響し,典型的には20-40歳の患者です.
  • 臨床的な症状には,出血,発作,進行性神経学的欠損,または頭痛が含まれ,年間出血率は1-4%です.

研究 の 目的:

  • 脳動脈静脈変形 (AVM) の現在の理解を,その自然史,臨床表現,および最近の治療の進歩を含め,レビューする.
  • AVMの胚形成に関する進化する多学科的アプローチと新興の理論を強調する.

主な方法:

  • AVMの出血率とリスク要因に関する自然史研究のレビュー.
  • 血管内栓塞,ステレオタクシー放射線外科,微小外科などの最近の治療進歩の分析.
  • 流動に関連する動脈動脈瘤および再発性AVMに関する議論.

主要な成果:

  • 脳のAVMの年間出血率は1-4%で,時間とともに再出血のリスクが増加します.
  • かなりの罹患率にもかかわらず,それに関連した出血合併症は,以前に推定されたよりも軽度な可能性があります.
  • 多分野的な治療法により,以前は治療できなかったAVMの治療結果が改善されています.

結論:

  • 現代の内血管内科,放射線外科,およびマイクロ外科の技術は,脳AVMの効果的な治療を可能にします.
  • AVMの胚形成と増殖の可能性に関するさらなる研究は,新しい洞察を提供することができます.
  • 流れに関連する動脈動脈瘤の管理は,AVMのケアにおいてますます重要な側面となっています.