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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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Electrocardiogram Fundamentals01:28

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Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
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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.
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Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
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Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early...
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Related Experiment Video

Updated: Mar 16, 2026

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment
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ECG-ELECTRODE INDUCED HYPOPIGMENTATION.

Paul A Tripi, Supraja N Parthasarathy, Kord Honda

    Middle East Journal of Anaesthesiology
    |August 5, 2016
    PubMed
    Summary
    This summary is machine-generated.

    Skin hypopigmentation from electrocardiography (ECG) electrodes can occur. This case highlights a rare instance in a child undergoing dental anesthesia, emphasizing the need for awareness of potential skin reactions to ECG monitoring.

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    Quantification of Hypopigmentation Activity In Vitro
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    Area of Science:

    • Dermatology
    • Pediatrics
    • Cardiology

    Background:

    • Skin reactions to electrocardiography (ECG) electrodes are documented in both pediatric and adult populations.
    • These reactions are often attributed to the conductive gel or adhesive components of the ECG electrodes.
    • While contact dermatitis is common, less frequent reactions like contact depigmentation or hypopigmentation are also recognized.

    Observation:

    • A case study involving a healthy young boy is presented.
    • The boy underwent continuous electrocardiography monitoring during general anesthesia for dental rehabilitation.
    • Following the monitoring, the patient exhibited localized hypopigmentation.

    Findings:

    • The observed hypopigmentation is a rare, localized skin reaction.
    • This finding suggests a potential link between ECG electrode application and temporary loss of skin pigment.
    • The reaction occurred in a pediatric patient under specific clinical circumstances (general anesthesia for dental procedures).

    Implications:

    • This case underscores the importance of recognizing uncommon adverse skin reactions to medical devices like ECG electrodes.
    • Healthcare providers should be vigilant for hypopigmentation post-ECG monitoring, especially in pediatric patients.
    • Further investigation into the mechanisms causing ECG-induced hypopigmentation may be warranted to inform preventative strategies.