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Direct visualization of cardiac radiofrequency ablation lesions.
J Cardiovasc Transl Res 2009; 2(2):198-201JC

Abstract

Effective ablation of atrial fibrillation and other cardiac arrhythmias requires precise catheter navigation and controlled delivery of energy to cardiac tissue. In this study, we summarize our initial experience using a fiber optic direct visualization catheter to evaluate and guide placement of endocardial radiofrequency (RF) ablation lesions. RF lesions were created in cadaveric porcine hearts and examined in a blood-filled field using a direct visualization catheter. Direct visualization of RF lesions was repeated in vivo using an ovine model. Lesions and interlesion gaps were clearly identifiable using the direct visualization catheter. It was possible to place lesions in proximity to anatomical landmarks and in relation to one another. Catheter-generated images correlated well with lesion appearance on gross examination. Direct catheter-based visualization is a feasible technique for guiding RF lesion placement, estimating lesion size, and identifying interlesion gaps. Future work is needed to correlate surface appearance with transmurality and electrical isolation.

Authors+Show Affiliations

School of Medicine, Stanford University, Stanford, CA, USA. eversull@stanfordalumni.orgNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20559988

Citation

Eversull, Christian S., et al. "Direct Visualization of Cardiac Radiofrequency Ablation Lesions." Journal of Cardiovascular Translational Research, vol. 2, no. 2, 2009, pp. 198-201.
Eversull CS, Lin B, Irani AR, et al. Direct visualization of cardiac radiofrequency ablation lesions. J Cardiovasc Transl Res. 2009;2(2):198-201.
Eversull, C. S., Lin, B., Irani, A. R., Quigley, M. L., Mourlas, N. J., Hsia, H. H., ... Wang, P. J. (2009). Direct visualization of cardiac radiofrequency ablation lesions. Journal of Cardiovascular Translational Research, 2(2), pp. 198-201. doi:10.1007/s12265-009-9094-9.
Eversull CS, et al. Direct Visualization of Cardiac Radiofrequency Ablation Lesions. J Cardiovasc Transl Res. 2009;2(2):198-201. PubMed PMID: 20559988.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Direct visualization of cardiac radiofrequency ablation lesions. AU - Eversull,Christian S, AU - Lin,Bryant, AU - Irani,Afraaz R, AU - Quigley,Morgan L, AU - Mourlas,Nicholas J, AU - Hsia,Henry H, AU - Zei,Paul C, AU - Al-Ahmad,Amin, AU - Wang,Paul J, Y1 - 2009/03/17/ PY - 2009/01/26/received PY - 2009/02/20/accepted PY - 2010/6/19/entrez PY - 2010/6/19/pubmed PY - 2010/10/5/medline SP - 198 EP - 201 JF - Journal of cardiovascular translational research JO - J Cardiovasc Transl Res VL - 2 IS - 2 N2 - Effective ablation of atrial fibrillation and other cardiac arrhythmias requires precise catheter navigation and controlled delivery of energy to cardiac tissue. In this study, we summarize our initial experience using a fiber optic direct visualization catheter to evaluate and guide placement of endocardial radiofrequency (RF) ablation lesions. RF lesions were created in cadaveric porcine hearts and examined in a blood-filled field using a direct visualization catheter. Direct visualization of RF lesions was repeated in vivo using an ovine model. Lesions and interlesion gaps were clearly identifiable using the direct visualization catheter. It was possible to place lesions in proximity to anatomical landmarks and in relation to one another. Catheter-generated images correlated well with lesion appearance on gross examination. Direct catheter-based visualization is a feasible technique for guiding RF lesion placement, estimating lesion size, and identifying interlesion gaps. Future work is needed to correlate surface appearance with transmurality and electrical isolation. SN - 1937-5395 UR - https://www.unboundmedicine.com/medline/citation/20559988/Direct_visualization_of_cardiac_radiofrequency_ablation_lesions L2 - https://www.lens.org/lens/search?q=citation_id:20559988 DB - PRIME DP - Unbound Medicine ER -