136-43: Arrhythmic risk stratification of sudden death in no-competitive athletes by dynamic ECG monitoring long time Nuubo

Abstract

Competitive athletes, in apparent good health, may present malignant ventricular arrhythmias. Some of them may present unsuspected and potentially fatal cardiovascular diseases, that result in the sudden arrhythmic death. For athletes with complex ventricular arrhythmias the risk of sudden cardiac death in amateur sports competition remains unresolved. The presence of palpitations and ventricular ectopic beats (BEV) on EKG has guided the selection of 155 no competitive athletes, that have been subjected to cycle ergometer exercise test, echocardiogram, dynamic ECG holter long time NUUBO nECG SUITE withe dispersion of ventricular recovery time (DTRV). Athletes have been divided in three groups, according to the number of BEV: (A) 21 with =2000/BEV/7d; (B) 53 with = 100 , 2000 BEV/7d; (C) 81 with ,100 BEV/7d. Cardiac abnormalities were detected in 6 athletes of group A. In these 6 athletes has been diagnosed the presence of mitral valve prolapse with regurgitation (3), myocarditis (1), hypertrophic cardiomyopathy (2). Athletes of the group A have shown higher values of QTcD (74.8 +-26.4 vs 64.2 +-22.7) and of Tp-Te (137.8 +-11.4 vs 116.4 +-16.2) than in the group B and C. Analysis of linear correlation has demonstrated that in athletes of group A, the dispersion of ventricular recovery time (DTRV) is significantly correlated with length of QRS and QT, measured with ECG or with average value recorded with Holter long time NUUBO: QTcD vs QT: r = 0.444 p = 0.011. This cohort of no competitive athletes represents a population of subjects in whom the presence of BEV has required more rigorous examination, that allowed to unmask structural alterations that otherwise would never have been searched.