title: [Unusual course of post-influenza complication in a patient with valvular heart disease].
mesh_terms: D004562:Electrocardiography; D004699:Endocardium; D005260:Female; D006349:Heart Valve Diseases / Q000150:complications; D006801:Humans; D007251:Influenza, Human / Q000150:complications*; D008875:Middle Aged; D008943:Mitral Valve; D012214:Rheumatic Heart Disease / Q000150:complications
vernacular_title: Niecodzienny przebieg powikłania pogrypowego u osoby z wada serca.