epicardial mapping
Electrophysiological technique mapping cardiac electrical activity from the heart's outer surface, used in CRT lead placement and arrhythmia ablation.
Full Definition
Epicardial mapping involves the placement of electrodes on the outer surface of the heart (epicardium) to record electrical activity patterns and guide therapeutic interventions such as cardiac resynchronization therapy lead positioning or ablation procedures. This technique provides electrical information not obtainable from endocardial approaches and may be necessary when transvenous access is not feasible or when targeting specific arrhythmia substrates. Medical editors must distinguish epicardial mapping from endocardial procedures and understand the associated surgical approaches and documentation requirements.
Usage
Usage note: Specify approach (surgical vs. percutaneous); distinguish from endocardial procedures; include indication and findings.
In Context
- "Epicardial mapping revealed optimal pacing sites not accessible through transvenous approaches." — CRT implant procedure note
- "The patient required epicardial mapping and ablation due to failed endocardial VT termination attempts." — Electrophysiology procedure report