High power laser in chordae tendineae to improve heart mitral regurgitation: an experimental study in swine
نویسندگان
چکیده
Background Rheumatic fever remains a significant worldwide cause of mitral regurgitation, responsible for approximately 90% of early childhood valvular surgery in Brazil. Elongated/flail chordate are frequently responsible for such condition that must be surgically corrected. Despite recent surgical progress in mitral valve reconstruction techniques, there are no published reports shortening the chordate tendineae applying Surgical Laser. The purpose of this study was to analyze and compare the histological tissue mitral valve chordae and its mechanical resistance with and without High Power Laser (HPL) application.
منابع مشابه
Letter: congenital mitral regurgitation due to 'posterior reinsertion' of chordae tendineae.
A rare type of congenital mitral regurgitation is presented for the first time as an isolated cardiac anomaly. The malformation consists of a particular arrangement of the chordae tendineae of the posterior leaflet: the chordae, leaving the free margin or the undersurface, insert into the latter once again. A definition of the anomaly and a classification of all the chordal anomaliesfound in co...
متن کاملSevere Mitral Regurgitation Secondary to Ruptured Chordae Tendineae.
RUPTURE of the chordae tendineae is an uncommon event that may lead to sudden mitral regurgitation, the severity of which generally depends on the number and location of the chordae involved.1 It has been reported to occur with active bacterial or rheumatic endocarditis, in association with healed rheumatic valvulitis, following healed bacterial endocarditis or trauma, or "spontaneously" in hea...
متن کاملAssessment of ventricular elements of mitral valve by left ventriculography.
In the left ventriculogram in the right anterior oblique projection the plane of the mitral valve is seen in profile and the papillary muscle shadows are outlined. The distance from the middle of the papillary muscles to the plane of the mitral valve during systole was used to assess the average length of the chordae tendineae, and the area of the papillary muscle shadows was measured as an ind...
متن کاملAcute mitral regurgitation in pregnancy due to ruptured chordae tendineae.
Rupture of chordae tendineae resulting in acute mitral regurgitation has previously been described following rheumatic fever, subacute bacterial endocarditis, blunt chest trauma, and in Marfan's syndrome. Chordae may rupture spontaneously in older patients, producing a characteristic clinical syndrome, but such 'idiopathic' rupture is exceptional before the age of 50. This paper reports the occ...
متن کاملAngiographic features of rheumatic and nonrheumatic mitral regurgitation.
Left ventricular cineangiography was performed in 37 patients with mitral regurgitation. Twenty-one patients had rheumatic mitral valve disease determined by careful surgical and pathologic examination, 10 had papillary muscle dysfunction, and six had chordae tendineae rupture. Fourteen of the 16 patients considered to have nonrheumatic mitral regurgitation were confirmed surgically; the other ...
متن کامل