Heart palpitations. Usually harmless, but when should you see your doctor?
D001145:Arrhythmias, Cardiac / Q000209:etiology / Q000503:physiopathology*; D004562:Electrocardiography / Q000379:methods; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D009200:Myocardial Contraction / Q000502:physiology