Abstract
Abstract Introduction Competitive sports activity may increase the risk of life-threatening ventricular arrhythmias and sudden cardiac death (SCD) in athletes with underlying cardiovascular diseases (CVD). Preparticipation screening (PPS) offers the potential to early identify CVD and reduce this risk, but the optimal age of sport PPS start is not known. Purpose The aim of this study is to assess the burden of sudden cardiac arrest (SCA) and the diagnostic yield of PPS for CVD at risk of SCA in two different age groups: 8-11 year-old and 12-15 year-old. Methods Data on the incidence and causes of SCA from 2011 to 2020 were retrieved from the sudden death registry of our region, hospital records and local press. During the same period, we assessed 25,251 young competitive athletes aged 8-15 years who underwent 58,185 annual PPS (mean 2.3/athlete) including history, physical examination, ECG and exercise testing. Further tests were required in case of abnormalities at first-line screening. Results Over 10 years, 21 sudden deaths and 5 resuscitated SCA occurred: 6 in athletes (incidence 0.7/100.000/year) versus 20 in non-athletes (0.7/100.000/year). 67% athletes versus 5% non-athletes who suffered SCA were successfully resuscitated (aborted sudden cardiac death=aSCD), (results according to the age-group in Figure 1). Idiopathic ventricular fibrillation was the most common diagnosis accounting for 14/26 (54%) cases. The incidence of SCA was 0.2/100.000/year in the age group 8-11 year-old versus 1.3/100.000/year in the age group 12-15 year-old. By PPS, 26 (0.1%) athletes received a diagnosis of at-risk CVD, significantly more often in children ≥12 year-old (0.06%/evaluation) than <12 year-old (0.02%/evaluation, p=0.02), (Figure 2). During follow-up, 2 screened athletes suffered SCA due to idiopathic ventricular fibrillation, both ≥12 year-old at the time of PPS. Conclusions The incidence of SCA was 6 times higher in the age group 12-15 years compared with the 8-11 years group. Similarly, the diagnostic yield of PPS for at-risk CVD was significantly higher after 12 years of age. This suggests that systematic PPS may not be justified before 12 year-old.Figure 1Figure 2
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