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High‐Sensitivity Cardiac Troponin Levels in Supraventricular Tachyarrhythmias
Author(s) -
COSTABEL JUAN PABLO,
URDAPILLETA MARCELA,
LAMBARDI FLORENCIA,
CAMPOS ROBERTO,
VERGARA JUAN MANUEL,
ARIZNAVARRETA PAULA,
TRIVI MARCELO
Publication year - 2016
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/pace.12851
Subject(s) - medicine , atrial fibrillation , cardiology , supraventricular tachycardia , atrial flutter , troponin , tachycardia , supraventricular arrhythmia , troponin complex , atrial tachycardia , catheter ablation , myocardial infarction
Background High‐sensitivity cardiac troponin assays have provided a significant contribution for the early diagnosis of cardiovascular events. However, elevated cardiac troponin levels may occur in other clinical situations as supraventricular tachyarrhythmias with concerns about the mechanism of this elevation. Objectives and Methods The goal of this study was to describe the performance of high‐sensitivity cardiac troponin T (hs‐cTnT) assay in patients presenting to the emergency department with a primary diagnosis of supraventricular tachyarrhythmia and to evaluate its relation with cardiovascular events during follow‐up. Results One hundred patients were included; mean age was 64 ± 12 years and 59.8% were men. The most common arrhythmia at admission was atrial fibrillation (68%), followed by atrial flutter (16%) and reentrant tachycardia (16%). The results of the first determination of hs‐cTnT were positive (>14 ng/L) in 44.2% of the patients and the second determination was positive in 50.7% of the cases. The variation between the first and the second troponin levels was 1 (0–5) ng/L, and was >7 ng/L in 24.6% of the cases, with a clear trend toward higher troponin values in reentrant tachycardias. Four events were reported at 30 days; in all the cases the patients had presented atrial fibrillation and there were no significant differences in hs‐cTnT values. Conclusions There are a significant number of patients with supraventricular tachyarrhythmias who present elevated hs‐cTnT levels. The association of this elevation with cardiovascular events seems to be very low.