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Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice
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Electrical storm in Brugada syndrome during pregnancy

Mohammad B Sharif-Kazemi1, Zahra Emkanjoo, Amir Tavoosi

  • 1Department of Pacemaker and Electrophysiology, Rajaie Cardiovascular Research and Medical Center, Tehran, Iran.

Pacing and Clinical Electrophysiology : PACE
|April 1, 2010
PubMed

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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
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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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