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Related Concept Videos

Cardiac Action Potential01:30

Cardiac Action Potential

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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.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
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ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

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Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
256

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Profound repolarization abnormalities after cylindrical battery ingestion: a case report.

Moritz Till Huttelmaier1, Björn Lengenfelder1, Wolfgang Rudolf Bauer1

  • 1Department of Internal Medicine I, University of Wuerzburg, University Hospital, Oberdürrbacherstraße 6, D-97080 Wuerzburg, Germany.

European Heart Journal. Case Reports
|February 11, 2021
PubMed
Summary

Ingesting cylindrical batteries can cause dangerous cardiac arrhythmias and unusual electrocardiogram (ECG) changes. Prompt removal of batteries via esophagogastroduodenoscopy normalized the patient's ECG, highlighting a critical intervention for this rare poisoning.

Keywords:
Case reportCylindrical battery ingestionIntoxicationST-elevationSuicidal attemptT-wave-elevationU-waves

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Area of Science:

  • Cardiology
  • Toxicology
  • Gastroenterology

Background:

  • Cardiac arrhythmias are a significant risk for patients with suicidal intoxication.
  • Electrocardiogram (ECG) abnormalities in these patients can be caused by drug toxicity or electrolyte imbalances.
  • Distinguishing causes of ECG changes is challenging when intoxication details are unknown.

Purpose of the Study:

  • To report a rare case of cardiac electrical abnormalities induced by ingested cylindrical batteries.
  • To describe the specific ECG findings and their resolution after intervention.
  • To propose potential mechanisms for battery-induced cardiac effects.

Main Methods:

  • A clinical case report of a 27-year-old male patient presenting with suicidal battery ingestion.
  • Detailed analysis of surface electrocardiogram (ECG) alterations.
  • Intervention involved removal of ingested batteries via esophagogastroduodenoscopy.

Main Results:

  • The patient exhibited unusual ECG changes, including ST-elevation, high-amplitude biphasic T-waves, and QT-interval prolongation.
  • These ECG abnormalities normalized rapidly after endoscopic battery removal.
  • No long-term cardiac sequelae were observed.

Conclusions:

  • Ingestion of cylindrical batteries can lead to significant, reversible ECG abnormalities.
  • Proposed mechanisms include electrical field effects from batteries or direct electrotonic effects on cardiac myocytes.
  • Individual patient factors influence the manifestation and severity of these cardiac repolarization abnormalities.