title: [Late results of mitral valve replacement with ball-type and low-profile prostheses].
abstract: The discussion covers long-term results of mitral valve replacement with Soviet-made prostheses. Two hundred and sixty-three patients have been under observation, the follow-up periods lasting from six months to five years. A ball-valve prosthesis (MK4-25) was implanted to 125 patients; 138 patients received a low-profile (,) prosthesis. Functional parameters were improved in 86 (69.9 percent) patients with ball-valve implants and in 118 (89 percent) patients with low-profile implants. Ten ball valve implanted patients (8 percent) and 6 (4.3 percent) patients with low-profile prostheses died in the long-term period. The five-year survival of rotation-disc artificial valve recipients was 90 percent, and that of the ball valve-implanted patients, 83 percent.
authors.forename: A S
authors.initials: AS
authors.lastname: Iarygin
authors.forename: Iu I
authors.initials: IuI
authors.lastname: Malyshev
authors.forename: V P
authors.initials: VP
authors.lastname: Prikhod'ko
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006350:Heart Valve Prosthesis / Q000009:adverse effects; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D008946:Mitral Valve Stenosis / Q000601:surgery*; D011183:Postoperative Complications / Q000209:etiology* / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D013997:Time Factors
vernacular_title: Otdalennye rezul'taty zameny mitral'nogo klapana sharovymi i nizkoprofil'nymi protezami.