II - 様々な臨床状態における心拍の自律神経制御の評価
Benedito Carlos Maciel1, Lourenço Gallo-Jr1, André Schmidt1
1Universidade de São Paulo - Campus Ribeirão Preto, Ribeirão Preto, SP - Brasil.
Arquivos brasileiros de cardiologia
|February 4, 2026
まとめ
本研究は、様々な状態における自律神経系の機能を評価し、シャーガス病心疾患が副交感神経およびアドレナリン制御を著しく損なうことを発見した。予後および治療上の意味については、さらなる研究が必要である。
科学分野:
- 心臓学; 自律神経科学; 臨床医学
背景:
- 自律神経障害は、様々な心血管疾患に関与している。; シャーガス病心疾患、心不全、心臓手術後などの病状の管理において、自律神経障害の理解は極めて重要である。; 当研究所は、70年以上にわたり心拍の自律神経制御を評価してきた豊富な経験を有している。
研究 の 目的:
- 健常ボランティアおよび特定の臨床状態の患者における自律神経機能を比較すること。; シャーガス病心疾患、心臓手術後、慢性心不全、僧帽弁逸脱症、甲状腺機能亢進症における副交感神経および求心性神経系に影響を与える多系統機能不全症を検出すること。; シャーガス心筋症における自律神経障害の予後的関連性および治療的可能性を調査すること。
主な方法:
- 心拍の自律神経制御を評価するために、様々な確立された検査を利用した。; 健常ボランティア(対照群)と重篤な臨床状態の患者との間で自律神経反応を比較した。; 自律神経機能の副交感神経および求心性神経の両方の成分を評価することに焦点を当てた。
主要な成果:
- シャーガス病における自律神経障害は、主に心拍の副交感神経制御と心室の求心性神経支配に影響を及ぼした。; 複数の心血管系疾患、シャーガス病心疾患、慢性心不全、心臓手術後を含む多系統機能不全症の評価が行われた。; 僧帽弁逸脱症および甲状腺機能亢進症における自律神経機能の研究も行われた。
結論:
- シャーガス病心疾患は、特に心臓制御に影響を与える著しい自律神経系の関与を示している。; シャーガス心筋症における自律神経障害は、予後および治療的応用のためにさらなる調査に値する。; 当研究所の長年の専門知識は、心血管自律神経科学における継続的な研究の強固な基盤を提供する。
関連する概念動画
Regulation of Heart Rates
3.9K
The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
3.9K
Factors Influencing Heart Rate
6.7K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
6.7K
Heart Failure III: Clinical Manifestations
598
Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
598
Cardiac Output I:Effect of Heart Rate on Cardiac Output
2.7K
Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
2.7K
Autonomic Nervous System
12.9K
The autonomic nervous system (ANS) is a critical component of the peripheral nervous system, primarily responsible for regulating involuntary bodily functions and maintaining homeostasis. It functions in tandem with the central nervous system (CNS) to seamlessly coordinate various physiological processes without the need for conscious control.
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
12.9K
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies
624
The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
624


