Abstract
AimsReference values exist for endocardial but not for epicardial (EPI) substrate mapping in cases of cardiomyopathy-associated ventricular tachycardia. We sought to establish such values for EPI electrogram voltage, including areas with overlying fat.Methods and resultsTen patients (six males) undergoing cardiac surgery were studied. After opening the pericardium, the distal bipole of an electrophysiology catheter was placed tangential to the EPI surface to obtain an electrogram recording. The bipole was tangentially rotated 90° and the higher of the two amplitudes (mV) was taken as the local amplitude. Recordings were taken from normal left and right ventricular myocardium (n = 26 data points each), over thick (≥0.5 cm) fat at both ventricular bases (n = 16) and thin (
Original language | English (US) |
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Pages (from-to) | 949-953 |
Number of pages | 5 |
Journal | Europace |
Volume | 11 |
Issue number | 7 |
DOIs | |
State | Published - Jul 2009 |
Externally published | Yes |
Keywords
- Ablation
- Electrogram amplitude
- Epicardial
- Epicardial fat
- Ventricular tachycardia
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Physiology (medical)