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Long‐Term Results for Aortic Valve Replacement with Small Aortic Annulus
Author(s) -
Yamasaki Motoshige,
Sasaguri Shiro,
Hosoda Yasuyuki,
Takazawa Kenji,
Yamamoto Taira,
Hariya Akifusa
Publication year - 2002
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1046/j.1525-1594.2002.06977.x
Subject(s) - cardiac skeleton , aortic valve replacement , medicine , aortic valve , cardiology , prosthesis , hemodynamics , body surface area , ventricular pressure , left ventricular hypertrophy , surgery , stenosis , blood pressure
We determined whether aortic prosthesis size influences survival and hemodynamic function. Eighty‐nine patients who underwent small aortic valve replacement were followed. The small internal orifice area index (IOAI) group was defined as having an internal orifice area/body surface area ratio of ≤1.3 cm 2 /m 2 (n = 34). The control group was defined as having an IOAI >1.3 cm 2 /m 2 (n = 55). The actuarial survival rate at 10 years was 74.5% in the small IOAI group and 75% in the control group (NS). Freedom from valve‐related impairment at 10 years was 87% in the small IOAI group and 85% in the control group (NS). Postoperative pressure gradients were higher in the small IOAI group (p < 0.05). Left ventricular mass index decreased in both groups (albeit nonsignificantly in the small group, but significantly decreased in the control group). The long‐term results of aortic valve replacement for patients with small aortic annulus were satisfactory. However, the postoperative pressure gradient through the prosthesis and left ventricular hypertrophy remained at a high level in the small IOAI group.