An analysis of modern data on the prevalence and causes of the formation of mitral valve prolapse in children is carried out. Cardiac and extracardial manifestations of mitral valve prolapse are described. The results of electrocardiographic and echocardiographic examination of children are presented. The most frequent phenotypic manifestations of connective tissue dysplasia in children with mitral valve prolapse were identified.

mitral valve prolapse, electrocardiographic and echocardiographic examination, connective tissue dysplasia, cardiac and extracardial manifestations, mitral regurgitation, myxomatic degeneration.

Achilova F.A., Ibatova Sh.M., Abdulkadyrova N.B. Prevalence of small heart abnormalities in children according to Echocardiography. //International Journal of Scientific Pediatrics. 2022, No. 5, p.11-15

Grigoriev K.I., Solovyova A.L. Mitral valve prolapse in children: when opportunities create difficulties. // Medical nurse. 2021, volume 23, No. 1, p.19-28

Efimenko O.V., Khaidarova L.R. Frequency and clinical manifestations of mitral valve prolapse in children associated with phenotypic manifestations of connective tissue dysplasia// "International Journal of Scientific Pediatrics". Uzbekistan, pp.12-15

Zemtsovsky E.V. Connective tissue dysplasia of the heart. St. Petersburg: Politex, 2019 – 95 p.

Kleimenov A.V. Mitral valve prolapse: clinical variants, modern concepts.// Attending physician.-2019.-No.9.-p.65-69

Medrazhevskaya Ya.A., Kuleshov A.V., Malyk S.L. Cardiac arrhythmias in children with mitral valve prolapse and ways of correction. // Medicine and Pharmacology, 2019, No.6 (61)

Muratkhodzhaeva A.V. Small anomalies of heart development in children and adolescents. // Eurasian Bulletin of Pediatrics, 1 (1), 2019, p.48-56

Mukhsinova M.Kh., Khuzhaeva F.S., Abduvakhidov Zh.Z. Small anomalies of the heart in children. // Re-Health, No.2, 2021, p.173-181

Mitral valve prolapse. Diagnostics, stratification of the risk of complications and tactics of patient management./ E.A.Itskova, O.N.Kryuchkova, O.A.Sizova et al.//Crimean Therapeutic Journal. 2019- p.18-22

Eidem B.W., CettaF., O’leary P.W. Echocardiography in Pediatric and Adult Congenital Heart Disease. Philodelphia, 2019. -500p.