Review
Copyright ©The Author(s) 2018.
World J Cardiol. Aug 26, 2018; 10(8): 62-73
Published online Aug 26, 2018. doi: 10.4330/wjc.v10.i8.62
Table 1 Prevalence[8,9], prognosis[10] and percentage of patients undergoing surgery[8] for severe aortic stenosis and preserved ejection fraction
High gradient (mean > 40 mmHg)Low gradient (mean < 40 mmHg)
Normal flow (SV > 35 mL/m2)
Prevalence30%-62.7%15.3%-38%
Prognosis (2 yr survival rates)44% ± 6%83% ± 6% (best prognosis)
% Undergoing surgery80% (highest rates of surgery)53%
Low flow (SV < 35 mL/m2)
Prevalence8%-13.2%8.8%-24%
Prognosis (2 yr survival rates)30% ± 12%27% ± 13%-worst prognosis
% Undergoing surgery68%36%-lowest rates of surgery