| Long Term Effects of 19mm Bileaflet Aortic Valve Prosthesis |
(Department of Cardiovascular Surgery, Jichi Medical School,
Omiya Medical Center, Saitama, Japan)
| Satoshi Ito |
Koji Kawahito |
Masashi Tanaka |
| Kenichiro Noguchi |
Atushi Yamaguchi |
Seiichiro Murata |
| Koichi Adachi |
Hideo Adachi |
Takashi Ino |
|
We reviewed our experience with 19mm size
aortic valve prostheses for cases with small aortic annulus. Forty-six
patients operated on between 1990 and Septembr 2002 were enrolled in this
study. Clinical late assessment was performed to evaluate the incidence
of valve-related complications, residual transprosthetic gradient, left
ventricular mass index (LVMI), and NYHA functional class. Postoperative
echocardiography was performed to evaluate hemodynamic performance of the
prostheses. Follow up was 1 to 12.7years (mean 5.3±3.6). There was no
hospital mortality (0%). Actuarial survival rates at 10years were
81.4±1.5%. The late postoperative peak gradient was 25±11mmHg. LVMI
was significantly reduced in late phase. NYHA functional class significantly
improved in the late period. Although 19mm size aortic valve prosthesis
remains small transprosthetic pressure gradient, LVMI significantly
reduced and patient activity was satisfactory maintained in the late period.
Jpn. J. Cardiovasc. Surg. 34: 167-171 (2005) |
|
