Abstract
Transcatheter ahlation of nodal tissue is used for the treatment of arrhythmia resistant to medical therapy. We have investigated the use of laser induced fluorescence spectroscopy for the in vitro recognition of nodal conduction tissue. Twelve fresh human necropsy specimens ( 1.3 for 380/475 nm was able to detect nodal conducfion tissue (P < 0.001). Conclusion. Laser induced fluorescence can differentiate nodal conduction tissue from atrial and ventricular endocardium and may provide a new diagnostic tool for the recognition and subsequent ablation of nodal conduction tissue. Copyright © 1993, Wiley Blackwell. All rights reserved