関連する実験動画
Updated: Jul 6, 2026
09:24
Multiparametric Optical Mapping of the Langendorff-perfused Rabbit Heart
Published on: September 13, 2011
犬の無傷で鼓動する心臓の右側と左側の心房隔膜の同時マルチサイトマッピング
H Sun1, E O Velipasaoglu, D E Wu
1Center for Experimental Cardiac Electrophysiology, Section of Cardiology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA.
Circulation
|July 21, 1999
まとめ
右心房と左心房の間の心房活性化は,特に心房間隔膜にわたって不一致です. 隔膜の上部と下部に電気接続が存在し,波の伝播パターンに影響を与えます.
科学分野:
- 心臓電気生理学 心臓電気生理学
- アトリヤの解剖学と機能
背景:
- 右心房 (RA) と左心房 (LA) の間の電気活性化の広がりは完全に理解されていません.
- 特に,心房間隔膜の右側と左側の側面に沿った活性化パターンに重点を置いています.
研究 の 目的:
- 犬における心房間隔膜の電気活性化のパターンを調査する.
- RAとLAの間の活性化の広がりを明確にするために.
主な方法:
- 10匹の犬のRAとLAに64個の電極を配置したバスケット型のカテーテルを使用しました.
- シヌスリズム,右心室ペース,セプトペースで記録された単極電図.
- アトリアとセプトの活性化パターンを視覚化するためにアイソクロンマップを生成しました.
主要な成果:
- 右と左のセプトの活性化パターンは,さまざまなペース状態で不一致でした.
- シヌスリズムと上部セプトのペースングの間,アクティベーションは主に上部から下部に移動し,LAセプトのアクティベーションが遅れた.
- 右心室と下部隔膜のペースは,複雑で不協和な隔膜活性化パターンをもたらしました.
結論:
- 犬では,心房間隔膜の右側と左側の電気的活性化が不一致である.
- RAとLAの間の電気接続は,心房間隔膜の上部と下部の両方の領域に存在する.
関連する概念動画
01:13Location and Orientation of the Heart
The human heart, despite its modest size and weight, is an organ of remarkable strength and endurance. Roughly the size of a fist, the heart weighs between 250 and 350 grams and is nestled within the mediastinum, the medial cavity of the thorax. It extends obliquely for about 12 to 14 cm, resting on the superior surface of the diaphragm. The heart is positioned anterior to the vertebral column and posterior to the sternum, with two-thirds of its mass lying to the left of the midsternal line.
01:16Chambers of the Heart
The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
Deoxygenated blood from the body is received in the right...
Deoxygenated blood from the body is received in the right...
01:16Heart 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...
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...