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Related Concept Videos

Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

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Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
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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...
4.0K
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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Pulse rhythm01:30

Pulse rhythm

1.0K
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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Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

152
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...
152
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

6.0K
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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A Simple Low-Cost Electrocardiogram Synchronizer.

Susana Amorós1, Carolina Gálvez-Montón2,3, Oriol Rodríguez-Leor2,3

  • 1School of Telecommunications Engineering, Universitat Politècnica de Catalunya, 08034 Barcelona, Spain.

Sensors (Basel, Switzerland)
|September 10, 2021
PubMed
Summary

This study introduces a low-cost Arduino-based module for Electrocardiogram (ECG) synchronization. The device converts ECG signals for real-time medical measurements, achieving high accuracy in animal testing.

Keywords:
ECGbioinstrumentationbiomedical signalsmedical sensor developmentsynchronizationtrigger

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Area of Science:

  • Biomedical Engineering
  • Medical Instrumentation
  • Signal Processing

Background:

  • Cardiac motion can affect medical measurements, necessitating Electrocardiogram (ECG) synchronization, commonly integrated into medical imaging equipment.
  • Independent synchronization modules are required for non-integrated instruments or novel medical device development.
  • Existing commercial synchronizers may not meet all specialized needs in medical research and development.

Purpose of the Study:

  • To develop and validate a simple, low-cost Electrocardiogram (ECG) synchronization module.
  • To enable real-time medical measurements triggered by specific cardiac cycle phases.
  • To provide a flexible synchronization solution for diverse medical applications.

Main Methods:

  • A novel ECG synchronizer module was designed using an Arduino controller board.
  • The module converts analog ECG signals into transistor-transistor-logic (TTL) signals.
  • The device and its conversion algorithm underwent in vitro optimization with synthetic and human ECG data, followed by in vivo testing on swine specimens.

Main Results:

  • The developed synchronization module demonstrated effective ECG signal conversion to TTL.
  • In vitro optimization refined the conversion algorithm for accuracy.
  • In vivo testing on swine showed error rates below 2% and critical false positives below 1%.

Conclusions:

  • The Arduino-based ECG synchronizer is a cost-effective and viable solution for real-time medical measurements.
  • The module's performance is sufficient for most applications requiring cardiac cycle triggering.
  • Potential algorithm enhancements were discussed for further performance improvements if needed.