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Related Concept Videos

Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

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Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
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Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

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Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
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Pulse rhythm01:30

Pulse rhythm

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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...
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Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
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Electrocardiogram01:29

Electrocardiogram

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An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
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Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

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The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
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Related Experiment Video

Updated: Apr 14, 2026

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

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From Working to Retirement-Age: How Sleep Duration Is Related to Atrial Fibrillation Using 1-Week

Tadashi Hoshiyama1, Kenichi Tsujita1, Yuko Inoue2

  • 1Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan.

Circulation Reports
|April 13, 2026
PubMed
Summary
This summary is machine-generated.

Longer sleep duration may reduce atrial fibrillation (AF) risk, especially for middle-aged adults. However, excessively long sleep offers diminishing returns, with no clear benefit observed in older adults.

Keywords:
AgingAtrial fibrillationElectrocardiographyRisk factorsSleep

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Multi-Modal Home Sleep Monitoring in Older Adults
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Related Experiment Videos

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Multi-Modal Home Sleep Monitoring in Older Adults
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Area of Science:

  • Cardiology
  • Sleep Medicine
  • Epidemiology

Background:

  • The relationship between sleep duration and atrial fibrillation (AF) risk varies by age.
  • Understanding these age-specific differences is crucial for public health.

Purpose of the Study:

  • To investigate the association between sleep duration and AF across different age groups.
  • To determine if sleep duration impacts AF risk differently in working-age versus retirement-age individuals.

Main Methods:

  • Sleep duration was estimated using accelerometer data from Holter-electrocardiogram devices.
  • The study population included individuals in their 50s (working-age) and 70s (retirement-age).

Main Results:

  • Overall, longer sleep duration was associated with reduced AF risk, but this benefit plateaued with excessively long sleep (P=0.03).
  • A consistent reduction in AF risk with increasing sleep duration was observed in individuals in their 50s (P=0.02).
  • No significant association between sleep duration and AF risk reduction was found in individuals in their 70s.

Conclusions:

  • Inadequate sleep may increase AF risk, particularly in middle-aged populations.
  • Sleep duration's impact on AF risk is age-dependent, highlighting the importance of tailored sleep recommendations.