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Related Concept Videos

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

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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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Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

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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,...
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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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ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

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An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
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Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
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Evaluating heart rate variability with 10 second multichannel electrocardiograms in a large population-based sample.

Elischa Krause1, Marcus Vollmer2,3, Katharina Wittfeld1,4

  • 1Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany.

Frontiers in Cardiovascular Medicine
|May 30, 2023
PubMed
Summary

Ultra-short heart rate variability (usHRV) from 10-second ECGs accurately reflects vagal-mediated HRV. This allows for the assessment of autonomic nervous system (ANS) dysregulation in large epidemiological studies.

Keywords:
ECGPHQ-9RMSSDbiomarkerdepressionheart rate variability (HRV)

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Area of Science:

  • Cardiology
  • Autonomic Nervous System Research
  • Epidemiology

Background:

  • Heart rate variability (HRV) is a key biomarker for autonomic nervous system (ANS) dysregulation.
  • Standard HRV assessment uses 5-minute electrocardiograms (ECG), but shorter durations are being explored.
  • The utility of ultra-short HRV (usHRV) for risk prediction in large studies remains unclear.

Purpose of the Study:

  • To evaluate the validity and applicability of usHRV derived from 10-second ECG recordings.
  • To compare usHRV with traditional HRV measures in a large cohort.
  • To assess the association of usHRV with demographic factors and depressive symptoms.

Main Methods:

  • Utilized 10-second multichannel ECG recordings from the Study of Health in Pomerania (SHIP) cohort (N=4,245 and N=2,392).
  • Compared usHRV with HRV derived from longer ECG recordings (5-minute polysomnography and orthostatic testing).
  • Investigated associations of usHRV and HRV with age, sex, obesity, and depressive symptoms.

Main Results:

  • High correlations (r=0.52-0.75) were observed between usHRV and traditional HRV measures.
  • usHRV emerged as the strongest predictor of HRV, even after controlling for covariates.
  • Associations of usHRV and HRV with demographic variables and depressive symptoms were similar.

Conclusions:

  • 10-second ECG recordings can reliably derive usHRV, serving as a valid proxy for vagal-mediated HRV.
  • usHRV facilitates the investigation of ANS dysregulation using routinely collected ECG data in epidemiological studies.
  • This approach aids in identifying risk and protective factors for various health conditions.