Document Detail

Endocardial catheter mapping: validation of a cineradiographic method for accurate localization of left ventricular sites.
MedLine Citation:
PMID:  3757194     Owner:  NLM     Status:  MEDLINE    
To guide surgical therapy for ventricular tachycardia by preoperative endocardial catheter mapping, accurate anatomic localization of arrhythmogenic sites is mandatory. For this reason we developed a mathematical cineradiographic method to compute left ventricular sites relative to three anatomic reference points: the centers of aortic and mitral valve ostia and the left ventricular apex. To validate the method 14 epicardial left ventricular markers were implanted in four dogs to simulate arrhythmogenic sites. Distances between markers and the anatomic references were calculated and the results were compared with postmortem measurements. The difference between calculated and measured distances was 0.5 +/- 3.1 mm (mean +/- SD), confirming accurate localization of anatomic marker sites. However, in surgery the results have to be displayed in a practically applicable, unambiguous way. Therefore, wire skeletons were constructed to represent calculated endocardial marker sites relative to the anatomic reference points. To validate this approach, 14 markers were implanted in the left ventricular subendocardium in four dogs. Wire skeletons were constructed, one for each marker site, and inserted postmortem into the left ventricular cavity via a 2 cm incision. In all cases the correct indication of a marker site by the corresponding wire skeleton was confirmed by fluoroscopic inspection in multiple projections. This wire skeleton technique may enhance the practical usefulness of preoperative endocardial catheter mapping.
R N Hauer; R M Heethaar; M T de Zwart; R N van Dijk; I van der Tweel; C Borst; E O Robles de Medina
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Circulation     Volume:  74     ISSN:  0009-7322     ISO Abbreviation:  Circulation     Publication Date:  1986 Oct 
Date Detail:
Created Date:  1986-11-10     Completed Date:  1986-11-10     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  862-8     Citation Subset:  AIM; IM    
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MeSH Terms
Biophysical Phenomena
Cineradiography / methods*
Evaluation Studies as Topic
Heart Catheterization*
Heart Ventricles / radiography*,  surgery
Models, Anatomic
Tachycardia / radiography*,  surgery

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