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Updated: Jul 31, 2025

Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice
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Marked PR interval variability in a patient with Brugada syndrome

Miguel Martins de Carvalho1,2, Ricardo Alves Pinto2, Tânia Proença1

  • 1Department of Cardiology, São João Universitary Hospital, Oporto, Portugal.

Porto Biomedical Journal
|May 8, 2023
PubMed
Summary

No abstract available in PubMed .

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Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
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