LOWN-GANONG-LEVINE SYNDROME IN PROFESSIONAL ATHLETES - IS IT DANGEROUS?

Abstract

Background: Lown-Ganong-Levine (LGL) syndrome is characterized by a short PR interval and normal QRS duration. LGL syndrome typically presents with paroxysms of tachycardia and is generally associated with a favorable prognosis.. Aim: Risk stratification in professional athletes with LGL syndrome. Case Report: We present a case of a 17-year-old professional footballer who experienced intermittent symptoms of tachycardia, fatigue, and chest pain. Over the past 10 days, during training sessions, he noticed a faster heart rate than usual and a sudden onset of pronounced fatigue, leading to an inability to complete his training as he normally would. An electrocardiogram (ECG) revealed a short PR interval, while an echocardiography showed no abnormalities. Additionally, an exercise stress test yielded normal results. Finally, a Holter rhythm recording captured episodes of sinus tachycardia reaching up to 155 beats per minute. Based on these findings, a diagnosis of Lown-Ganong-Levine (LGL) syndrome was made. Since no additional risk factors were identified, the patient was cleared to continue with professional sports. Conclusion: Due to the tendency for tachycardia in individuals with Lown-Ganong-Levine (LGL) syndrome, it is advisable to evaluate the condition to ensure that the athlete can safely continue with sports activities. Fortunately, athletes diagnosed with LGL syndrome generally have a positive prognosis and can typically continue participating in professional sports without significant risks.