As patients with congenital heart disease age with increasingly complex lesions, heart failure and arrhythmias have emerged as leading sources of morbidity and mortality. The two are intertwined, as one may herald, beget, or aggravate the other. Moreover, arrhythmias in adults with congenital heart disease and heart failure can be poorly tolerated or life threatening. There is, therefore, much interest in promptly and accurately diagnosing arrhythmias and identifying risk factors for sudden death. This article appraises current knowledge regarding diagnostic tools for arrhythmias in adults with congenital heart disease and heart failure and comments on their prognostic value where relevant.
Keywords: Adult congenital heart disease; Arrhythmias; Diagnostic testing; Electrophysiology; Heart failure.
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