Related Experiment Video
Updated: May 1, 2026
09:17
High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
Published on: July 29, 2011
14.1K
P-wave duration dispersion in patients with lichen planus
Ilknur Balta1, Sevket Balta2, Mustafa Demir2
1Department of Dermatology, Kecioren Training and Research Hospital, Ankara, Turkey.
Clinics (Sao Paulo, Brazil)
|April 10, 2014
Summary
No abstract available in PubMed .
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The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
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