Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

2.2K
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
2.2K
Overview of the Heart01:07

Overview of the Heart

32.2K
The heart, a muscular organ located in the chest, functions as the body's pump, circulating blood through the vascular system. It has four chambers: two atria on top and two ventricles below. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which pumps it to the lungs for oxygenation. The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle, which pumps it to the rest of the body.
The heart's structure...
32.2K
Exercise and Cardiac Output01:17

Exercise and Cardiac Output

3.8K
Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be...
3.8K
Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

3.3K
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
3.3K
Exercise and Cardiovascular Response01:20

Exercise and Cardiovascular Response

6.7K
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
6.7K
Physiology of the Heart: The Cardiac Cycle01:18

Physiology of the Heart: The Cardiac Cycle

15.9K
The cardiac cycle describes the events from one heartbeat to the next. It includes three main phases: diastole, atrial systole, and ventricular systole, all driven by changes in chamber pressures and the function of heart valves.
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
15.9K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Pulmonary Hypertension in Adults With a Systemic Right Ventricle (Biventricular Circulation).

JACC. Advances·2026
Same author

Eisenmenger Syndrome Hidden by Unrepaired Patent Ductus Arteriosus: Diagnosis After Delivery.

JACC. Case reports·2026
Same author

The Canadian Cardio-Obstetrics (CanCOB) Network: Advancing Education, Research, and Clinical Care in Cardio-Obstetrics.

The Canadian journal of cardiology·2026
Same author

Prognostic Value of Tricuspid Regurgitation in Pulmonary Hypertension and Among the Different WHO Groups.

JACC. Cardiovascular imaging·2026
Same author

Relation of Doppler-Derived Regurgitant Fraction to Regurgitant Volume in Chronic Aortic Regurgitation and Implications for Prognosis.

Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography·2026
Same author

Improving structural heart disease screening: AI-ECG and novice AI-guided focused cardiac ultrasound.

NPJ digital medicine·2026
Same journal

Online Prescribing of GLP-1 Receptor Agonists.

JAMA·2026
Same journal

Using AI Disagreement to Expose Gaps in Coverage Rules.

JAMA·2026
Same journal

Randomized Trials in Pregnancy.

JAMA·2026
Same journal

Randomized Trials in Pregnancy-Reply.

JAMA·2026
Same journal

WHO Issues Guidelines for Treating Ebola and Marburg Viruses.

JAMA·2026
Same journal

FDA Approves Additional Naloxone Nasal Spray for Opioid Overdose.

JAMA·2026
関連記事をすべて見る

関連する実験動画

Updated: Apr 30, 2026

Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure
04:20

Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure

Published on: October 1, 2019

5.1K

左心室の機能と運動能力

Jasmine Grewal1, Robert B McCully, Garvan C Kane

  • 1Division of Cardiovascular Diseases, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.

JAMA
|January 22, 2009
PubMed
まとめ
この要約は機械生成です。

左心室のダイアストリック機能障害は,静脈機能とは無関係に運動能力を著しく低下させる. この関連性は,高齢化や女性においてより顕著であり,腹動脈機能を強調しています.

さらに関連する動画

Biventricular Assessment of Cardiac Function and Pressure-Volume Loops by Closed-Chest Catheterization in Mice
08:21

Biventricular Assessment of Cardiac Function and Pressure-Volume Loops by Closed-Chest Catheterization in Mice

Published on: June 15, 2020

6.2K
Author Spotlight: Exercise Test for Evaluation of the Functional Efficacy of the Pig Cardiovascular System
02:47

Author Spotlight: Exercise Test for Evaluation of the Functional Efficacy of the Pig Cardiovascular System

Published on: May 12, 2023

2.2K

関連する実験動画

Last Updated: Apr 30, 2026

Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure
04:20

Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure

Published on: October 1, 2019

5.1K
Biventricular Assessment of Cardiac Function and Pressure-Volume Loops by Closed-Chest Catheterization in Mice
08:21

Biventricular Assessment of Cardiac Function and Pressure-Volume Loops by Closed-Chest Catheterization in Mice

Published on: June 15, 2020

6.2K
Author Spotlight: Exercise Test for Evaluation of the Functional Efficacy of the Pig Cardiovascular System
02:47

Author Spotlight: Exercise Test for Evaluation of the Functional Efficacy of the Pig Cardiovascular System

Published on: May 12, 2023

2.2K

科学分野:

  • 心臓病学 心臓病学
  • エコーカルディオグラフィー エコーカルディオグラフィー
  • 運動生理学 運動生理学

背景:

  • 運動能力に対する左心房機能の予測値に関するデータは限られている.
  • この関係における年齢と性に関する差異を調査することは極めて重要です.

研究 の 目的:

  • エコカルジオグラフィで決定された心臓機能が運動能力に与える影響を評価する.
  • 性別と年齢がこれらの関連性を変化させるかどうかを判断する.

主な方法:

  • 運動エコーカルディオグラフィー (ブルースプロトコル) を受けた2867人の患者の横断研究.
  • 2Dとドップラー技術を用いて左心室のシストリックとダイアストリック機能を評価した.
  • 缺血,低射出分数,または重大な弁疾患を有する患者を除外した.

主要な成果:

  • ダイアストリック機能不全は,運動能力 (METs) と強く逆相関しています.
  • 適度/重度の透析機能不全は, -1.30 METsの容量低下; -0.70 METsの軽度の機能不全.
  • 通常のシストリック機能の変動は容量に影響を与えなかったが,充填圧の上昇 (E/e' ≥15) は容量を -0.41 METs 減少させた.
  • 年齢,女性の性別,肥満 (BMI > 30) は,運動能力の独立した負の予測因子でした.

結論:

  • 左心室のダイアストリック機能不全は,イシュケミアのない患者の運動能力の低下の独立した予測因子です.
  • 結果は,運動能力の評価におけるダイアストリック機能評価の重要性を強調しています.