Which of the following is true about rheumatic fever
Answer- B. Chorea occurs in the absence of other manifestations after prolonged latent periodAcute rheumatic fever (ARF) is a multisystem disease resulting from an autoimmune reaction to infection with group A streptococcus.The endocardium, pericardium, or myocardium may be affected. Valvular damage is the hallmark of rheumatic carditisThe mitral valve is almost always affected, sometimes together with the aoic valve; isolated aoic valve involvement is rare.Early valvular damage leads to regurgitation.usually as a result of recurrent episodes, leaflet thickening, scarring, calcification, and valvular stenosis may develop.Therefore the characteristic manifestation of carditis in previously unaffected individuals is mitral regurgitation, sometimes accompanied by aoic regurgitation.
Characteristic manifestation of carditis in previously unaffected individuals is mitral stenosis
Chorea occurs in the absence of other manifestations after prolonged latent period
Isolated aoic valve involvement is most common
90% of the patients with acute rheumatic fever proceed to rheumatic ea disease