File:3rd degree heart block.PNG

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3rd_degree_heart_block.PNG (482 × 219 pixels, file size: 144 KB, MIME type: image/png)

Summary[edit]

Summary
Description Two EKG strips obtained in the same patient simultaneously (each represents a different vector of the heart’s electrical conduction), demonstrating complete AV block (also called 3rd degree heart block). The solid arrows point to P waves, representing atrial electrical conduction originating from the sinus node. The dashed arrows denote electrical conduction in the ventricles (QRS complexes). Note that the P waves are not related to the QRS complexes, demonstrating that the atria are electrically disconnected from the ventricles. The QRS complexes represent an escape rhythm arising from the ventricle.
Source Wikimedia Commons file page
Author Gregory Marcus, MD, MAS, FACC
Permission See original Commons license details.

Licensing[edit]

Creative Commons Attribution 3.0 Unported (CC BY 3.0)

This file is licensed under the Creative Commons Attribution 3.0 license.

Official license: CC BY 3.0

License page: CC BY 3.0

Original attribution and file history: Wikimedia Commons

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Date/TimeThumbnailDimensionsUserComment
current02:12, 7 June 2026Thumbnail for version as of 02:12, 7 June 2026482 × 219 (144 KB)Maintenance script (talk | contribs)== Summary == Importing file

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