Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Nov 9;8(1):37–50. doi: 10.1016/j.jacbts.2022.07.002

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

EDEN Electrogram Morphology to Guide Intramyocardial Guidewire Navigation

Depth is shown in millimeters from the epicardial surface. The injury current (ST-segment elevation subsuming the QRS complex) exhibits a biphasic pattern during wire advancement from the epicardial toward the endocardial surface, gradually increasing to a maximum in the midmyocardium. The ST-segment elevation then declines with additional advancement toward the endocardium. The injury current disappears when the guidewire tip enters the left ventricular chamber at 16-mm. Color-coded regions indicate how operators interpret electrocardiographic radial depth navigation (EDEN) electrograms during navigation: deep myocardial (green), subendocardial and subepicardial (orange), and intracavity (red).