関連する実験動画
Updated: Jun 30, 2026

06:53
3D Whole-heart Myocardial Tissue Analysis
Published on: April 12, 2017
まとめ
エコーカルディオグラフィは,心房動における左心房壁の動きパターンを明らかにし,診断を助けます. 細い心房細動は,粗い心房細動とは異なり,有意な波動を示さない.
科学分野:
- 心臓病学 心臓病学
- メディカルイマージング (医学イメージング)
- 電気生理学 電気生理学
背景:
- 心房細動および心房動は,心臓の機能に影響する一般的な心律不良です.
- これらの不律律を区別することは,特に診断用でない心電図で難しいことがあります.
- エコーカルディオグラフィーは,心臓の構造と動態を視覚化するための非侵襲的な方法を提供します.
研究 の 目的:
- 動脈動と動脈動を患っている患者のエコーカルディオグラフィの発見を調査する.
- エコーカルディオグラフィーで,心房の振動と異なるタイプの心房細動を区別できるかどうかを判断する.
- 不確実な心電図の発見の場合には,エコーカルディオグラフィの診断的有用性を評価する.
主な方法:
- 22人の患者で心房動または心房動と診断された心房回転研究が行われました.
- 心電図 (ECG) を用いて,心電活動と心音図の発見を関連付けました.
- フォノカルディオグラムはエコーカルディオグラフィと併用して,微妙な心房の音を検出するために使用されました.
主要な成果:
- 心房の振動は,ECGの振動波と同期した,左後心房壁と心房間隔膜に一貫した,規則的な波動的な波を示した.
- ミトラル弁は,静脈閉塞後のフラッター波ごとにわずかな再開を示した.
- 粗度の心房細動は,下痢時に波動的,低周波のミトラ弁の運動を引き起こした.
- 精細心房細動は,左心房壁または心室間隔膜の有意なまたは恒常的な波動を引き起こさなかった.
結論:
- エコーカルディオグラフィは,心房振動の間に左心房とミトラ弁の特徴的な動的変化を明らかにすることができます.
- エコーカルディオグラフィのパターンは,心房の振動,粗度の心房細動,細度の心房細動によって異なります.
- エコーカルディオグラフィの評価は,特に心房振動が曖昧な場合,心房振動の診断に役立ちます.
関連する概念動画
Location 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.
Layers of the Heart Wall
The heart wall comprises three distinct layers: the epicardium, myocardium, and endocardium. The outermost layer, the epicardium, is the visceral layer of the serous pericardium, featuring a thin, transparent mesothelial surface and an inner layer of areolar connective tissue with fat deposits that increase with age.
The myocardium, the thickest layer, consists of cardiac muscle cells interconnected by intercalated discs and crisscrossing connective tissue fibers. These muscle fibers contract...
The myocardium, the thickest layer, consists of cardiac muscle cells interconnected by intercalated discs and crisscrossing connective tissue fibers. These muscle fibers contract...
Chambers 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...
Heart Sounds
Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...
Anatomy of the Heart
The heart is a hollow, muscular organ approximately the size of a fist, consisting of four chambers. It is enclosed in the pericardium, a fibrous sac with two layers: the visceral and parietal pericardium, separated by a fluid-filled space containing serous fluid to reduce friction.
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
Cardiovascular System Abnormal Findings II: Auscultation
Auscultation, an essential part of a heart examination, is done using a stethoscope. It provides crucial information about heart function and possible heart problems. Due to heart problems, abnormal sounds can be heard during systole or diastole. These sounds include S3 and S4 gallops, opening snaps, systolic clicks, and murmurs.
Abnormal Heart Sounds
Gallops:
Abnormal Heart Sounds
Gallops:

