DocumentCode :
2397473
Title :
Exit vs. entrance block testing for cardiac lesion assessment
Author :
Ahlberg, Sarah E. ; Hong, Jinback ; Stewart, Mark T. ; Francischelli, David E. ; Kress, David C.
Author_Institution :
CardioVascular Div., Medtronic, Inc., Fridley, MN, USA
fYear :
2009
fDate :
3-6 Sept. 2009
Firstpage :
3282
Lastpage :
3285
Abstract :
Cardiac lesions are created to act as barriers which prohibit the transmission of cardiac myocyte contractile activity from one side of the lesion to the other. Testing for conduction block is the main way to acutely confirm the effectiveness of this therapy. There are two general methods used to test for conduction block. These methods are called: (1) "exit block testing" and (2) "entrance block testing." In this study, two different devices were used on n = 3D5 swine to determine if the method of lesion assessment (exit vs. entrance block testing) affected the ability to correctly identify if acute conduction block was achieved. No significant difference was found between conclusions drawn from either method of lesion assessment. However, the most robust lesion assessment will occur when both methods are employed so that the physician has the most information available for analysis.
Keywords :
cardiology; cellular biophysics; surgery; cardiac lesion assessment; cardiac myocyte contractile activity; conduction block testing; entrance block testing; exit block testing; Animals; Cardiac Pacing, Artificial; Cardiac Surgical Procedures; Catheter Ablation; Electrophysiology; Equipment Design; Heart; Heart Conduction System; Hemodynamics; Models, Statistical; Myocardial Contraction; Radio Waves; Signal Processing, Computer-Assisted; Swine;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE
Conference_Location :
Minneapolis, MN
ISSN :
1557-170X
Print_ISBN :
978-1-4244-3296-7
Electronic_ISBN :
1557-170X
Type :
conf
DOI :
10.1109/IEMBS.2009.5333777
Filename :
5333777
Link To Document :
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