[Unusually rare postextrasystolic phenomenon].
D000368:Aged; D005117:Cardiac Complexes, Premature; D004562:Electrocardiography; D005260:Female; D006327:Heart Block; D006329:Heart Conduction System; D006352:Heart Ventricles; D006801:Humans
Neobicno redak postekstrasistojni fenomen.