[Arrhythmias in children with mitral valve prolapse syndrome].

The aim of the study is analysis of arrhythmia in children with mitral valve prolapse syndrome. The study includes 45 children with MVP, 16 boys and 29 girls from the district of Bydgoszcz. Their age ranged from 9 to 16 with an average of 12.4. The diagnosis was based on clinical examination, and results of noninvasive examinations of the cardiovascular system with decisive, echocardiographic imaging of the heart. Arrhythmia was analyzed with Holter monitoring using Hewlett-Packard equipment and the New Wave Holter program. The record was made over a 24-hour period. The control group was chosen from children with negative symptoms relating to cardiologic disease, in good general health, and normal ECG readings. During ECG monitoring in both groups, no complex arrhythmia forms were discovered (according to the Lown scale, above class 3). Individual signs of premature heart chamber stimulation were diagnosed in about (40% of both groups. Additional heart chamber stimulations (VEB) were registered in children with MVP (approximately 62%). Moreover, the children with MVP showed higher maximum heart activity.