ISSN 1016-5169 | E-ISSN 1308-4488
Archives of the Turkish Society of Cardiology
Effects of Preferred Prosthetic Valve Diameter on Long-term Left Ventricular Function in Mitral Valve Replacement [Turk Kardiyol Dern Ars]
Turk Kardiyol Dern Ars. 1995; 23(4): 259-262

Effects of Preferred Prosthetic Valve Diameter on Long-term Left Ventricular Function in Mitral Valve Replacement

Op.Mert KESTELLİ1, Op.B.Hayrettin ŞİRİN1, Rahmi ZEYBEK1, Nursen POSTACI1, Nagehan KARAHAN1, Mansur ŞAĞBAN1

Normally, shortening of the minor (transverse) axis accounts for 85-90% of the left ventricular stroke volume. In this study, left ventricular functions of 27 mitral valve replacement cases treated with Medtronic-Hall prosthetic mitral valve 29 or 31 mm in diameter were evaluated in the late postoperative period (16-34th month) by two-dimensional, M-mode echocardiographic techniques. Echocardiographic and clinical findings of 12 patients treated with 29 mm and 17 patients treated with 31 mm prosthetic valves were compared in preoperative and late postoperative period. There was no difference between two groups preoperatively. In the late postoperative period, ejection fraction (EF) was significantly higher and endsystolic volume index (ESVI) was significantly lower in patients treated with 29 mm prosthetic valves (EF: 68±7% and 60.5±7%, ESVI: 29.9±12.7 and 42.3±14.1 in patients treated with 29 mm and 31 mm prosthetic valve, respectively, p<0.05). Differences between enddiastolic volume index and stroke volume index were not found significant statistically. In conclusion, large diameter mitral valve may lead to deterioration in left ventricular systolic function in the late postoperative period, probably by limiting the shortening of the minor axis during systole.

Keywords: Mitral valve replacement, left ventricular function, mitral valve prosthesis diameter

How to cite this article
Op.Mert KESTELLİ, Op.B.Hayrettin ŞİRİN, Rahmi ZEYBEK, Nursen POSTACI, Nagehan KARAHAN, Mansur ŞAĞBAN. Effects of Preferred Prosthetic Valve Diameter on Long-term Left Ventricular Function in Mitral Valve Replacement. Turk Kardiyol Dern Ars. 1995; 23(4): 259-262
Manuscript Language: Turkish


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