Tachycardia-induced cardiomyopathy in pregnancy.

Heart failure in pregnancy is rare, but usually ascribed to peripartum cardiomyopathy in the absence of other possible diagnoses. However, heart failure can develop solely due to a tachycardia, so-called 'tachycardia-induced cardiomyopathy'. The incidence of tachycardia-induced cardiomyopathy in pregnancy is unknown, but it is a treatable and potentially reversible cause of heart failure. Clinically, tachycardia-induced cardiomyopathy during pregnancy might present in a similar manner, but its management has to be individualized according to the arrhythmic substrate and usually involve multidisciplinary input from specialists in obstetrics, cardiac electrophysiology and heart failure.