Identification of an epicardial slow conduction channel using ripple mapping in ablation of postinfarct ventricular tachycardia.
Tomomasa TakamiyaOsamu InabaJunichi NittaMasahiko GoyaPublished in: Journal of cardiovascular electrophysiology (2019)
An 82-year-old man underwent redo catheter ablation of ventricular tachycardia (VT) after anterior infarction. A ripple mapping conducting channel (RMCC) was identified within the anterior scar in the left ventricular epicardium during sinus rhythm. Along the RMCC, delayed potentials during sinus rhythm, a good pace map with a long stimulus to the QRS interval, and mid-diastolic potentials during VT were recorded, and epicardial ablation at this site eliminated the VT. These findings suggested that the RMCC in the epicardial scar served as a critical isthmus of the postinfarct VT, and ablation targeting the RMCC was effective.
Keyphrases
- catheter ablation
- atrial fibrillation
- left atrial
- left ventricular
- left atrial appendage
- high resolution
- high density
- heart failure
- cardiac resynchronization therapy
- heart rate
- blood pressure
- wound healing
- hypertrophic cardiomyopathy
- percutaneous coronary intervention
- mitral valve
- radiofrequency ablation
- aortic valve replacement
- aortic stenosis
- transcatheter aortic valve replacement
- drug delivery
- bioinformatics analysis
- aortic valve