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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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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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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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Instrumentation Amplifier01:25

Instrumentation Amplifier

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An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
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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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Related Experiment Video

Updated: Feb 28, 2026

Surgical Implant Procedure and Wiring Configuration for Continuous Long-Term EEG/ECG Monitoring in Rabbits
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Surgical Implant Procedure and Wiring Configuration for Continuous Long-Term EEG/ECG Monitoring in Rabbits

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Multi-purpose ECG telemetry system.

Mohamed Marouf1, Goran Vukomanovic2, Lazar Saranovac3

  • 1School of Electrical Engineering, University of Belgrade, Bulevar kralja Aleksandra 73, 11120, Belgrade, Serbia. maroufmail@gmail.com.

Biomedical Engineering Online
|June 21, 2017
PubMed
Summary

This study introduces a versatile telemetry Electrocardiogram (ECG) device for remote cardiac monitoring. The system offers reliable signal quality for arrhythmia detection, improving patient care and device accessibility.

Keywords:
Dry electrodesECGEvent recordingPost-eventTelemetry systemsValidation

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Area of Science:

  • Biomedical Engineering
  • Cardiology
  • Medical Devices

Background:

  • Electrocardiogram (ECG) is a crucial non-invasive tool for diagnosing cardiac diseases.
  • Telemetry ECG devices offer convenient patient monitoring but face challenges in signal quality, working modes, and cost.
  • Mass adoption of telemetry ECGs is hindered by these obstacles.

Purpose of the Study:

  • To design, implement, and validate a multi-purpose telemetry system for ECG recording, transmission, and interpretation.
  • To address challenges in signal quality and usability for both patients and physicians.
  • To enable flexible ECG monitoring in various clinical scenarios.

Main Methods:

  • Developed a system comprising an ECG device, cloud-based analysis pipeline, and mobile applications.
  • Engineered a patient-friendly ECG device for easy short-term (dry electrodes) and long-term (wet electrodes) recordings.
  • Implemented customized signal processing pipelines for different recording modes to ensure signal quality.

Main Results:

  • Evaluated a novel short-term recorder design with 391 patients against a 12-lead ECG.
  • Found 96% of recorded signals were acceptable for detecting arrhythmias and abnormal changes.
  • Presented correlation coefficients and QRS delineation results comparing the novel recorder with a standard ECG.

Conclusions:

  • The multi-purpose ECG device allows physicians to select working modes based on patient status.
  • The device is designed for patient ease-of-use in managing recording modes.
  • Short-term ECG recording provides reliable data for symptom-rhythm correlation.