Abstract:
BACKGROUND:Patients with supraventricular tachycardia (SVT) and patients with coronary artery disease (CAD) often present with similar symptoms (chest pain, shortness of breath), similar electrocar¬diographic changes and elevated high-sensitivity troponin (Tn). It is not clear whether troponin reflects critical CAD or is elevated due to other causes in patients presenting with SVT. The aim of this study was to assess the role of elevated troponin in patients presenting with SVT. METHODS:Patients undergoing radiofrequency ablation (RFA) for SVT and simultaneous coronary an¬giography at the Heart Centre Lucerne, Switzerland between January 2010 and October 2014 were in¬cluded in this analysis. Significant CAD was defined as diameter-stenosis ≥ 75% in vessels > 2.0 mm. The level of Tn was compared between patients with the presence or absence of CAD on coronary angi¬ography. A Tn value of ≥ 0.014 μg/L was considered as elevated. RESULTS:During the study period a total of 473 patients underwent RFA for SVT. The study population consisted of 326 patients (69%, mean age 60 ± 12 years) who underwent invasive coronary angiogra¬phy during the same session. The prevalence of significant CAD was 14% (45/326 patients). The highest prevalence of CAD was found in patients with atrial flutter (35%, 18/45 patients). Tn was elevated in 83% (10/12 patients) with significant CAD and in 47% (26/55 patients) without CAD. CONCLUSIONS:The prevalence of CAD is low in patients with SVT, which questions the role of routine invasive coronary angiography during RFA. Tn measurement did not reliably exclude or confirm CAD in these patients.
journal_name
Cardiol Jjournal_title
Cardiology journalauthors
Murer M,Cuculi F,Toggweiler S,Weberndoerfer V,Young M,Kobza Rdoi
10.5603/CJ.a2017.0058subject
Has Abstractpub_date
2017-01-01 00:00:00pages
642-648issue
6issn
1897-5593pii
VM/OJS/J/49941journal_volume
24pub_type
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