epicardial access
Percutaneous approach to the pericardial space for mapping and ablation of epicardial arrhythmia substrates.
Full Definition
A specialized procedural technique involving percutaneous access to the pericardial space to enable mapping and ablation of arrhythmia substrates located on the epicardial surface of the heart. Epicardial access is typically achieved through subxiphoid puncture using a Tuohy needle with subsequent pericardial space navigation. This approach is essential for treating certain ventricular tachycardias that originate from or involve the epicardial surface, particularly in patients with nonischemic cardiomyopathy or specific anatomic locations inaccessible from the endocardium. The procedure carries specific risks including bleeding, coronary artery injury, and phrenic nerve damage.
Usage
Usage note: Document approach technique and any complications when describing epicardial access procedures.
In Context
- "Epicardial access was obtained without complications using the subxiphoid approach." — VT ablation procedure note
- "The procedure required epicardial access due to the posterolateral VT exit site location." — Complex ablation report