One hundred and sixty-six young military man with mitral valve prolapse (MVP) aged 19.2+/-0.8 years were examined. Complex system approach to health status was applied to study clinico-functional features of this condition in young military men. The study found that clinico-functional manifestations of MVP in young military men reflected a multifocal character of dysadaptation during the first stages of military service. Conditions of professional military activity potentiate permanent progress of crisp prolapse as well as the severity of mitral regurgitation, structural and functional myocardial alterations, and myocardial electric instability increasing in the presence of abnormal cardiac chords under the influence of a prominent vegetative dysfunction. The reserve of the cardiorespiratory system and the entire organism in military men with MVP was lowered. The study registered inadequate hemodynamic responses to functional orthostatic test and physical load test, typical for hyperventilation syndrome.
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