TY - JOUR
T1 - Prognostic Risk Stratification of Patients with Moderate Aortic Stenosis
AU - Ito, Saki
AU - Miranda, William R.
AU - Nkomo, Vuyisile T.
AU - Boler, Amber N.
AU - Pislaru, Sorin V.
AU - Pellikka, Patricia A.
AU - Crusan, Daniel J.
AU - Lewis, Bradley R.
AU - Nishimura, Rick A.
AU - Oh, Jae K.
N1 - Publisher Copyright:
© 2020 American Society of Echocardiography
PY - 2021/3
Y1 - 2021/3
N2 - Background: Currently risk stratification of moderate aortic stenosis (AS) is still incipient. The aim of this study was to identify prognostic factors in patients with moderate AS. Methods: The prognosis of patients with moderate AS (1 < aortic valve area ≤ 1.5 cm2) stratified by left ventricular ejection fraction (LVEF; 50%), stroke volume index (SVI; 35 mL/m2), and elevated E/e′ ratio (average, 14) was compared with that of the age- and sex-matched general population. Results: Of 696 patients (median age, 77 years; aortic valve area 1.3 cm2; 57% men), 279 (40%) died during a median follow-up period of 3.4 years. Mortality was higher in patients with moderate AS than reference (mortality ratio, 2.43; 95% CI, 2.17–2.72). LVEF < 50%, SVI < 35 mL/m2, and elevated E/e′ ratio were present in 113 (17%), 54 (8%), and 330 (54%) patients; mortality ratios were 3.89 (95% CI, 3.07–4.85), 6.40 (95% CI, 4.57–8.71), and 2.58 (95% CI, 2.21–3.00), respectively. Even if LVEF or SVI was preserved, the mortality ratio was more than twice than reference (P < .001), but elevated E/e′ ratio could discriminate additional patients at higher risk (hazard ratio [HR], 2.71; 95% CI, 1.88–3.91). Two hundred one patients (29%) underwent aortic valve replacement at a median of 2.3 years after the diagnosis of moderate AS. LVEF < 50% (HR, 2.98; 95% CI, 1.39–6.56), SVI < 35 mL/m2 (HR, 3.34; 95% CI, 1.02–10.90) and elevated E/e′ ratio (HR, 2.73; 95% CI, 1.26–5.94) were all associated with worse prognosis even if aortic valve replacement was performed. Conclusions: In patients with moderate AS, those with decreased LVEF and/or SVI are at high risk. Even if these parameters are preserved, patients with elevated E/e′ ratios are at intermediate risk. Further investigation is warranted to assess whether earlier intervention could improve outcomes and reduced cardiac-related death among patients at high and intermediate risk.
AB - Background: Currently risk stratification of moderate aortic stenosis (AS) is still incipient. The aim of this study was to identify prognostic factors in patients with moderate AS. Methods: The prognosis of patients with moderate AS (1 < aortic valve area ≤ 1.5 cm2) stratified by left ventricular ejection fraction (LVEF; 50%), stroke volume index (SVI; 35 mL/m2), and elevated E/e′ ratio (average, 14) was compared with that of the age- and sex-matched general population. Results: Of 696 patients (median age, 77 years; aortic valve area 1.3 cm2; 57% men), 279 (40%) died during a median follow-up period of 3.4 years. Mortality was higher in patients with moderate AS than reference (mortality ratio, 2.43; 95% CI, 2.17–2.72). LVEF < 50%, SVI < 35 mL/m2, and elevated E/e′ ratio were present in 113 (17%), 54 (8%), and 330 (54%) patients; mortality ratios were 3.89 (95% CI, 3.07–4.85), 6.40 (95% CI, 4.57–8.71), and 2.58 (95% CI, 2.21–3.00), respectively. Even if LVEF or SVI was preserved, the mortality ratio was more than twice than reference (P < .001), but elevated E/e′ ratio could discriminate additional patients at higher risk (hazard ratio [HR], 2.71; 95% CI, 1.88–3.91). Two hundred one patients (29%) underwent aortic valve replacement at a median of 2.3 years after the diagnosis of moderate AS. LVEF < 50% (HR, 2.98; 95% CI, 1.39–6.56), SVI < 35 mL/m2 (HR, 3.34; 95% CI, 1.02–10.90) and elevated E/e′ ratio (HR, 2.73; 95% CI, 1.26–5.94) were all associated with worse prognosis even if aortic valve replacement was performed. Conclusions: In patients with moderate AS, those with decreased LVEF and/or SVI are at high risk. Even if these parameters are preserved, patients with elevated E/e′ ratios are at intermediate risk. Further investigation is warranted to assess whether earlier intervention could improve outcomes and reduced cardiac-related death among patients at high and intermediate risk.
KW - Diastology
KW - LVEF
KW - Moderate AS
KW - Natural history
KW - Stroke volume
UR - http://www.scopus.com/inward/record.url?scp=85097790216&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85097790216&partnerID=8YFLogxK
U2 - 10.1016/j.echo.2020.10.012
DO - 10.1016/j.echo.2020.10.012
M3 - Article
C2 - 33161066
AN - SCOPUS:85097790216
SN - 0894-7317
VL - 34
SP - 248
EP - 256
JO - Journal of the American Society of Echocardiography
JF - Journal of the American Society of Echocardiography
IS - 3
ER -