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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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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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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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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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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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Related Experiment Video

Updated: Mar 27, 2026

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
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Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function

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Portable electrocardiograph through android application.

Igor H De Oliveira, V H Cene, A Balbinot

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 7, 2016
    PubMed
    Summary
    This summary is machine-generated.

    A portable electrocardiograph system was developed, transmitting heart signals via Bluetooth to an Android app for graphical display. This system enables portable cardiac monitoring and research, demonstrating the integration of electronics and mobile technology.

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    Area of Science:

    • Biomedical Engineering
    • Medical Electronics
    • Mobile Health

    Background:

    • Increasing use of portable systems like tablets and smartphones.
    • Need for accessible and portable cardiac monitoring solutions.
    • Advancements in wireless data transmission technologies.

    Purpose of the Study:

    • To design and implement a portable electrocardiograph system.
    • To develop an Android application for real-time signal visualization.
    • To explore the feasibility of using mobile technology for cardiac signal acquisition and analysis.

    Main Methods:

    • Utilized the ADS1294 integrated circuit for signal acquisition.
    • Developed an Android application for user interface and data display.
    • Employed Bluetooth for wireless data transmission from the device to a tablet.
    • Simulated 36 cardiac waveforms including arrhythmias and artifacts.
    • Conducted tests with a subject at rest and in motion.

    Main Results:

    • Successfully acquired and displayed cardiac electrical signals on an Android tablet.
    • Demonstrated the system's capability to record various cardiac rhythms and artifacts.
    • Observed signal degradation due to motion-induced artifacts during tests.
    • Validated the system's functionality with simulated heart rates from 30-190 BPM and amplitudes of 1-2 mV.

    Conclusions:

    • The developed portable electrocardiograph system effectively captures and displays cardiac signals using mobile technology.
    • The system provides a foundation for portable cardiac studies and remote monitoring.
    • Motion artifacts pose a challenge to signal interpretation in mobile applications, requiring further mitigation strategies.