New-onset atrial fibrillation in patients with elevated troponin I levels in the acute phase of stroke

Troponin I (TnI) increase in the acute phase of stroke may be due to the presence of acute coronary syndrome (ACS), other medical conditions and/or neurogenic-induced cardiac injury, especially in stroke involving the insula of the right brain hemisphere [1]. In this case, damage to cardiomyocytes is probably due to the rapid release of catecholamines into the bloodstream as a result of sympathoadrenal activation [2,3]. The consequences of cardiac injury may include new-onset arrhythmias, such as multifocal ventricular beats, couplets and unsustained ventricular tachycardia or atrial fibrillation (AF) [3].

Source: International Journal of Cardiology - May 25, 2015 Category: Cardiology Authors: Anetta Lasek-Bal, Zbigniew Gąsior, Teresa Kowalewska-Twardela, Tomasz Urbanek Source Type: research