Evaluation of post-radiofrequency myocardial injury by measuring cardiac troponin I levels

Emkanjoo, Z. and Mottadayen, M. and Givtaj, N. and Alasti, M. and Arya, A. and Haghjoo, M. and Fazelifar, A.F. and Alizadeh, A. and Sadr-Ameli, M.A. (2007) Evaluation of post-radiofrequency myocardial injury by measuring cardiac troponin I levels. International Journal of Cardiology, 117 (2). pp. 173-177.


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Background: The aim of this study was to investigate the extent of myocardial injury created by radiofrequency (RF) ablation. We assessed the changes in levels of cardiac biochemical markers in patients who underwent RF ablation and we sought to evaluate the utility of cardiac troponin I (cTnI) in detecting minor myocardial injury following RF ablation and determine its procedural correlates. Methods: We analyzed the data of 115 consecutive patients who underwent RF ablation. The target sites of RF ablation were slow pathway in 56, left atrioventricular (AV) annulus in 31, right AV annulus in 14, atrial wall in 3, ventricular wall in 6 and AV node in 3 patients. The levels of creatine kinase (CK), CK-MB, cTnI and myoglobin were compared with procedural data and targeted arrhythmia. Results: Post-RF ablation the concentration of cTnI, CM-MB, CK and myoglobin were significantly different than those of the initial sample. The mean and peak cTnI levels were raised above normal in 63 patients (54.8). Mean levels of cTnI correlated with the site of RF ablation, being significant for slow pathway ablation, ventricular tachycardia and left AV annulus. We also found a significant association of mean CK-MB, CK levels and left AV annulus. Conclusion: Our results indicate that radiofrequency ablation results in only minor injury. This marker is effective for detection of RF current induced myocardial injury. Lesions applied to the mitral annulus at the ventricular endocardium are associated with significantly greater myocardial damage. © 2006 Elsevier Ireland Ltd. All rights reserved.

Item Type: Article
Additional Information: cited By 21
Uncontrolled Keywords: creatine kinase; creatine kinase MB; myoglobin; troponin I, adolescent; adult; aged; article; correlation analysis; diagnostic value; evaluation; female; heart arrhythmia; heart atrioventricular node; heart atrium; heart muscle injury; heart ventricle wall; human; major clinical study; male; outcome assessment; priority journal; protein blood level; radiofrequency ablation; school child, Adolescent; Adult; Aged; Arrhythmia; Biological Markers; Catheter Ablation; Child; Child, Preschool; Creatine Kinase, MB Form; Evaluation Studies; Female; Humans; Male; Middle Aged; Myocardium; Myoglobin; Necrosis; Postoperative Complications; Troponin I
Subjects: WG Cardiovascular System
Divisions: School of Rehabilitation Sciences
Depositing User: parto mrs bakhtminoo
Date Deposited: 26 Feb 2019 10:59
Last Modified: 26 Feb 2019 10:59
URI: http://eprints.iums.ac.ir/id/eprint/12221

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