Sammanfattning
Sinus tachycardia may have a definite aetiology, but in the remaining cases inappropriate sinus tachycardia (IST) may be considered. IST is primarily treated in order to improve symptoms. During pregnancy, tachycardia-induced cardiomyopathy is rare; however, it needs urgent attention and treatment due to the risk of fast progression. In Denmark, performing an electrocardiogram is recommended in any pregnant woman, who has palpitations or a persisting heart rate > 100 beats per minute.