Perioperative and Long-Term Outcomes of Ross versus Mechanical Aortic
Valve Replacement
Abstract
Background The ideal aortic valve replacement strategy in young-
and middle-aged adults remains up for debate. Clinical practice
guidelines recommend mechanical prostheses for most patients less than
50 years of age undergoing aortic valve replacement. However, risks of
major hemorrhage and thromboembolism associated with long-term
anticoagulation may make the pulmonary autograft technique, or Ross
procedure, a preferred approach in select patients. Methods Data
were retrospectively collected for patients 18 to 50 years of age who
underwent either the Ross procedure or mechanical aortic valve
replacement (mAVR) between January 2000 and December 2016 at a single
institution. Propensity score matching was performed and yielded 32
well-matched pairs from a total of 216 eligible patients. Results
Demographic and preoperative characteristics were similar between the
two groups. Median follow-up was 7.3 and 6.9 years for Ross and mAVR,
respectively. There were no early mortalities in either group and no
statistically significant differences were observed with respect to
perioperative outcomes or complications. Major hemorrhage and stroke
events were significantly more frequent in the mAVR population (
p < 0.01). Overall survival ( p = 0.93), freedom
from reintervention and valve dysfunction free survival ( p =
0.91) were equivalent. Conclusions In this mid-term propensity
score-matched analysis, the Ross procedure offers similar perioperative
outcomes, freedom from reintervention or valve dysfunction as well as
overall survival compared to traditional mAVR but without the morbidity
associated with long-term anticoagulation. At specialized centers with
sufficient expertise, the Ross procedure should be strongly considered
in select patients requiring aortic valve replacement.