title: Concealed pentageminy.
abstract: Concealed pentageminy was observed during 10 h of Holter monitoring in a 27-year-old woman without apparent heart disease. In a continuous electrocardiographic recording the number of sinus beats within 114 consecutive interectopic intervals complied with the formula of S = 5n-1. The probability of this occurring by chance alone is infinitesimally small (p = 2(-114).
mesh_terms: D000328:Adult; D005117:Cardiac Complexes, Premature / Q000175:diagnosis* / Q000503:physiopathology; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods; D005260:Female; D006801:Humans; D011690:Purkinje Fibers / Q000503:physiopathology