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Related Concept Videos

Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

2.4K
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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Regulation of Heart Rates01:31

Regulation of Heart Rates

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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...
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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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Cardiac Output I:Effect of Heart Rate on Cardiac Output01:19

Cardiac Output I:Effect of Heart Rate on Cardiac Output

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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...
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ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

509
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....
509
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

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Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
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Related Experiment Video

Updated: Jun 6, 2025

Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
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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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RHRVEasy: Heart rate variability made easy.

Constantino A García1, Sofía Bardají1, Pablo Pérez-Tirador1

  • 1Department of Information Technology, Escuela Politécnica Superior, Universidad San Pablo-CEU, CEU Universities, Campus Montepríncipe, Boadilla del Monte, Madrid, Spain.

Plos One
|November 27, 2024
PubMed
Summary

RHRVEasy is a new R package that automates Heart Rate Variability (HRV) analysis, simplifying the identification of physiological states and potential disease markers. It efficiently computes numerous HRV indices and performs statistical comparisons between populations.

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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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Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
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Area of Science:

  • Cardiology
  • Computational Biology
  • Biostatistics

Background:

  • Heart Rate Variability (HRV) analysis is crucial for understanding physiological states and identifying pathologies.
  • Current HRV analysis methods are often manual, tedious, and prone to errors, especially in large studies.
  • Automating HRV index calculation and statistical comparison is needed to improve efficiency and accuracy.

Purpose of the Study:

  • To introduce RHRVEasy, an open-source R package designed to automate the comprehensive analysis of Heart Rate Variability.
  • To streamline the process of calculating diverse HRV indices and performing statistical comparisons between different populations.
  • To validate the accuracy and utility of RHRVEasy in distinguishing between healthy and pathological groups.

Main Methods:

  • RHRVEasy processes raw heart rate data from specified population folders.
  • The package computes up to 31 time, frequency, and non-linear HRV indices, including automated non-linear index calculation.
  • Automated hypothesis testing with significance level adjustment and post-hoc analysis for multi-group comparisons are performed.

Main Results:

  • RHRVEasy successfully automated the calculation of numerous HRV indices and statistical comparisons.
  • Validation using healthy and congestive heart failure patient databases showed expected significant differences.
  • Simulated groups demonstrated the package's ability to correctly identify similarities and differences between sampled populations.

Conclusions:

  • RHRVEasy significantly simplifies and automates complex Heart Rate Variability analysis.
  • The package enhances the efficiency and reduces errors in identifying physiological markers and pathological differences.
  • RHRVEasy provides a robust tool for researchers in cardiology and related fields.