Non-contact mapping in the treatment of ventricular tachycardia after myocardial infarction.
The treatment of ventricular tachycardia (VT) in patients with underlying ischaemic heart disease (IHD) remains a challenge. Ablation of these arrhythmias may have a significant impact on quality of life for patients. For those patients with haemodynamically unstable VT, ablation success rates have been improved by the use of non-contact mapping. Care has to be taken in the analysis and interpretation of non-contact mapping studies, as chamber size and filter settings have a large effect on the appearance of the activation maps produced. Despite this limitation the majority of VT exit sites and part of the diastolic pathway can be identified with non-contact mapping techniques.
Rajappan
Kim
K
Department of Cardiology, St Bartholomew's Hospital and Queen Mary University, London, UK.
Schilling
Richard J
RJ
D018780:Body Surface Potential Mapping / Q000379:methods*; D017115:Catheter Ablation; D004566:Electrodes; D006801:Humans; D009203:Myocardial Infarction / Q000503:physiopathology*; D012008:Recurrence; D012815:Signal Processing, Computer-Assisted; D017180:Tachycardia, Ventricular / Q000503:physiopathology* / Q000601:surgery*