Infective endocarditis: a complication of idiopathic hypertrophic subaortic stenosis (author's transl)

The idiopathic hypertrophic subaortic stenosis (IHSS) is thought to be infrequently complicated by infective endocarditis. Because IHSS is a disorder of the myocardium and not endocardium is not generally considered to have increased risk of infective endocarditis. Some Authors found, however, that approximately 5% of patients with IHSS develop bacterial endocarditis, because hemodynamically IHSS is like to valvular diseases. Therefore the incidence of endocarditis in IHSS is the same of valvular diseases. The vegetations can be found on anterior mitral valve leaflet, aortic cusps and subaortic endocardium. Some patients have dental surgery prior to the onset of endocarditis and others are infected with oral streptococci. For these reasons prophylactic antibiotics should be administered to patients with IHSS undergoing dental manipulation and in other settings where the risk of developing bacteremia is high. We describe one case of IHSS complicated with streptococcus viridans endocarditis. Vegetations, determined with echocardiography, were present on anterior mitral valve leaflet, aortic right coronary cusp and interventricular septum. In a review of literature we are been able to find twenty-seven cases of IHSS complicated with endocarditis.     

A fast Legendre transform algorithm and applications to the adhesion model

A new algorithm for the computation of discrete Legendre transforms is discussed. Classical solutions have a running time proportional toN ^2d , whereN is the size of the spatial grid andd is the space dimension. The new algorithm has a running timeO((N log₂ N) ^d ). A general application of this algorithm is to the weak solutions of hyperbolic systems of conservation laws as considered by Lax (1973,Hyperbolic Systems of Conservation Laws and the Mathematical Theory of Shock Waves, S.I.A.M.). The potential of the method is illustrated on the adhesion model, a multi-dimensional version of the Burgers equation, used to study the formation of large-scale structures in cosmology.