持続的な左上 vena cava から生じる心房細動
Li-Fern Hsu1, Pierre Jaïs, David Keane
1Hôpital Cardiologique du Haut-Lévèque, Bordeaux-Pessac, France. hsulifern@yahoo.com.sg
Circulation
|February 6, 2004
まとめ
持続的な左上 vena cava (LSVC) は,心房細動 (AF) を開始することができます. 前庭へのLSVCの接続を標的としたカテーテルアブレーションは,ほとんどの患者でリズム不良の原因を成功裏に隔離し,副鼻腔リズムを回復させました.
科学分野:
- 心臓病学 心臓病学
- 電気生理学 電気生理学
- 心臓の解剖学 心臓の解剖学
背景:
- 左上 vena cava (LSVC) は,前庭動 (AF) に関与する構造であるマーシャルの帯に関連した胚学的残骸です.
- 持続的なLSVCは稀であり,通常は組織的な心律不整症と関連しているが,以前はAFの発症とは関連していない.
- この研究では,外皮がAFを誘発する潜在的な源としてLSVCを調査しています.
研究 の 目的:
- エクトピーの源として左上 vena cava (LSVC) を特定し,心房細動 (AF) を開始する.
- LSVC,冠動脈 sinus (CS),および左心房 (LA) の間の解剖学的および電気的接続を調査する.
- 薬剤耐性AFの治療のために,これらのLSVC接続を標的としたカテーテルアブレーションの有効性を評価する.
主な方法:
- 症状のある,薬剤耐性AFの患者5人のケースシリーズ.
- エレクトロアナトミックマッピングとマルチエレクトロド記録により,LSVCから発生したエクトピーを特定します.
- LSVC,CS,LAの間の電気接続の評価について.
- カテーテルアブレーションターゲティングにより,LSVC接続が特定されました.
主要な成果:
- LSVCから発生したエクトピーは,肺静脈隔離後の5人の患者のAFの源として特定されました.
- 患者は,LSVC,CS,LAの間の電気的接続の度合いを変化させていた.
- カテーテルアブレーションにより,LSVCの電気隔離が,5人中4人の患者で成功しました.
- 成功したアブレーションは,15ヶ月のフォローアップで4人の患者に抗不律薬なしで持続的なシヌスリズムをもたらしました.
結論:
- 持続的な左上 vena cava (LSVC) は,心房動 (AF) を開始するための心律不振的焦点として機能することができます.
- LSVC,冠動脈副鼻腔,左心房間の特定の電気的接続は,AFの生成を促進します.
- これらのLSVC接続を標的としたカテーテルアブレーションは,電気的隔離を達成し,AFを治療するための効果的な戦略です.
関連する概念動画
Coronary Circulation
The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Overview of Systemic Arteries
The human body is a complex, well-organized machine, and at the heart of its operations lies the circulatory system. This network of blood vessels, which includes systemic arteries, plays a vital role in maintaining life by transporting nutrients, oxygen, and waste products to and from cells throughout the body.
Systemic circulation is the part of the cardiovascular system that carries oxygenated blood away from the heart to the body's tissues and returns deoxygenated blood back to the heart.
Systemic circulation is the part of the cardiovascular system that carries oxygenated blood away from the heart to the body's tissues and returns deoxygenated blood back to the heart.
Overview of Systemic Veins
Systemic veins are crucial blood vessels that return deoxygenated blood from various body tissues back to the heart. There are three systemic veins that return deoxygenated blood to the heart, they are as follows.
The coronary sinus, the heart's principal vein, resides in the coronary sulcus on the heart's posterior aspect. This broad venous channel receives nearly all venous blood from the myocardium, the heart muscle. It is fed by three primary veins: the great cardiac vein, the middle...
The coronary sinus, the heart's principal vein, resides in the coronary sulcus on the heart's posterior aspect. This broad venous channel receives nearly all venous blood from the myocardium, the heart muscle. It is fed by three primary veins: the great cardiac vein, the middle...
Veins of Thorax
The azygos system is a crucial part of the body's circulatory system and drains most of the thorax. It comprises the azygos, hemiazygos, and accessory hemiazygos veins.
The azygos vein, positioned just right of the midline and anterior to the vertebral column, begins at the junction of the right ascending lumbar and subcostal veins, terminating in the superior vena cava. This vein drains blood from the right side of the thoracic wall, thoracic viscera, and posterior abdominal wall.
The...
The azygos vein, positioned just right of the midline and anterior to the vertebral column, begins at the junction of the right ascending lumbar and subcostal veins, terminating in the superior vena cava. This vein drains blood from the right side of the thoracic wall, thoracic viscera, and posterior abdominal wall.
The...
Venous Thrombosis I: Introduction
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...
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...


