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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

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: Dec 29, 2025

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
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ST Segment Elevation Caused by Artifact From Cylindrical Battery Ingestion.

Alexander J Ordoobadi1, Benjamin G Allar1, Vwaire Orhurhu2

  • 1Division of Acute Care Surgery, Trauma, and Surgical Critical Care, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.

The Journal of Emergency Medicine
|February 1, 2020
PubMed
Summary
This summary is machine-generated.

Cylindrical battery ingestion can cause false electrocardiogram (ECG) findings mimicking heart attacks. Emergency physicians should consider electrical artifact from ingested batteries when ECG results are unexpected.

Keywords:
ST-segment elevation myocardial infarctionbattery ingestionelectrocardiogram

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Area of Science:

  • Emergency Medicine
  • Cardiology
  • Toxicology

Background:

  • Ingestion of cylindrical batteries is a rare occurrence.
  • Management options include endoscopic removal, surgical excision, or observation.
  • This case highlights a unique presentation of battery ingestion.

Observation:

  • A 51-year-old male presented with ST segment elevation in inferior leads on ECG after ingesting 13 pencils and 18 AA batteries.
  • Cardiac biomarkers and echocardiogram were unremarkable.
  • ECG abnormalities resolved following battery extraction.

Findings:

  • The observed ST segment elevation was determined to be an electrocardiogram (ECG) artifact.
  • The artifact mimicked ST-segment elevation myocardial infarction (STEMI).
  • Electrical interference from the ingested batteries was the likely cause.

Implications:

  • Emergency physicians must consider artifact as a cause for unexpected ECG findings.
  • Recognizing ECG artifact can prevent unnecessary and invasive cardiac workups.
  • This awareness aids in efficient patient management in emergency settings.