left atrial appendage dysfunction in a patient with premature ventricular contractions – a risk factor for stroke?
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2013
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Abstract
A 16-year-old female with ventricular dysfunction and frequent ventricular arrhythmia presented with a cardioembolic stroke. Prior electrophysiology study and ablation was performed for ventricular tachycardia (VT). For remaining ventricular ectopy, the patient was maintained on carvedilol and mexiletine. After one year on this regimen, she presented with an acute stroke. Transesophageal echocardiography revealed no evidence of an intracardiac or ventricular thrombus but demonstrated markedly decreased left atrial appendage (LAA) flow velocity worsened during frequent premature ventricular contractions (PVC). In the absence of atrial fibrillation (AF), the LAA dysfunction was considered secondary to the frequent PVCs and was thought to be the underlying cause for the stroke. We present this case to highlight a potential under recognized association between LAA dysfunction and ventricular arrhythmia, similar to that observed with atrioventricular dyssynchronous pacing.
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| Authors | ;Sandeep M. Patel, MD;Michael J. Ackerman, MD;Samuel J. Asirvatham, MD |
| Journal | Medical decision making : an international journal of the Society for Medical Decision Making |
| Year | 2013 |
| DOI |
10.1016/S0972-6292(16)30647-7
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