on the basis of ecg and normal results of non-invasive polygraphic examination ( systole phase analysis -- systolic time intervals ) it is possible to divide the least-risk group of persons with preexcitation ( with an otherwise normal heart and without paroxysmal tachycardia ) into five subgroups ( with growing risk ) and to evaluate the ability of a person with preexcitation to engage in sports ;
C0018787
heart
C0032915
preexcitation