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Updated: Aug 1, 2026

12:10
Semi-automated Optical Heartbeat Analysis of Small Hearts
Published on: September 16, 2009
まとめ
元気に見える人でも,心拍の乱れは一般的です. 常時の中心室外拍子を含むこれらの不律は,被験者の12%で発生し,さらなる心拍の研究の必要性を強調しました.
科学分野:
- 心臓病学 心臓病学
- 電気生理学 電気生理学
- 予防医学は,予防的な医療です.
背景:
- 心拍の乱れは,しばしば深刻なものとみなされます.
- 健康な集団におけるこれらの心律乱症の罹患率は十分に確立されていません.
- 正常な心拍の変動を理解することは,正確な診断に不可欠です.
研究 の 目的:
- 明らかに健康な成人の集団における心臓リズム障害の有病率を調査する.
- 24時間の心電図モニタリングで観察された不律律の種類と頻度を特徴付ける.
- アリズム障害,年齢,喫煙状態の間の潜在的な相関を調査する.
主な方法:
- 継続的な24時間の心電図 (ECG) 監視は,86人の健康な被験者 (16歳から65歳) に実施されました.
- 心臓異常が疑われる被験者は,研究前に除外されました.
- データ分析は,様々なタイプのブラディヤリズムとタキヤリズムを特定し,定量化することに焦点を当てました.
主要な成果:
- 明らかに健康な被験者の12%は,頻繁な心室外出心拍,R-on-T現象,多焦点心室外出心拍,双子症,心室外出心拍など,深刻な予後的な意味を持つ不律を示した.
- 2度目の心筋梗塞や2度目の心筋梗塞などの軽度の不律を算入すると,ほとんどの被験者は何らかの形のリズム障害を示した.
- アリズム障害は,覚醒時と睡眠時の両方で同様の頻度で発生し,高齢者グループに限定されていませんでした. 喫煙者は心拍数が著しく高かったが,心律乱症の数は高かったわけではない.
結論:
- 明らかに健康な人の有意な割合は,以前は予後不良と関連していた心臓リズム障害を示しています.
- これらの心律乱の存在は,高齢者に限ったことではありません.
- 喫煙は,心拍数増加と関連しているが,必ずしもこの集団における心律乱数の増加とは関連していない.
さらに関連する動画
関連する概念動画
The Cardiac Cycle
The heart beats rhythmically in a sequence called the cardiac cycle—a rapid coordination of contraction (systole) and relaxation (diastole).
The Process
Electrical signals—sent from the sinoatrial (SA) node in the right atrial wall to the atrioventricular (AV) node between the right atrium and right ventricle—cause both atria to simultaneously contract. When the signal reaches the AV node, it pauses for approximately a tenth of a second, allowing the atria to contract and empty blood into the...
The Process
Electrical signals—sent from the sinoatrial (SA) node in the right atrial wall to the atrioventricular (AV) node between the right atrium and right ventricle—cause both atria to simultaneously contract. When the signal reaches the AV node, it pauses for approximately a tenth of a second, allowing the atria to contract and empty blood into the...
Pulse rhythm
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Electrophysiology of Normal Cardiac Rhythm
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase of...
Conduction System of the Heart
Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
Pulse
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical indicator...
The pulse serves as a clinical indicator...
Conduction System of the Heart
The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
This system relies on the unique properties of nodal and Purkinje cells:...

