Abstract
Background: The continuity equation (CE) represents the 'gold standard' for the evaluation of aortic valve area in patients with aortic stenosis, but it is time-consuming and subject to error, and can be technically demanding. Recently, a new echocardiographic nonflow corrected index was introduced and demonstrated excellent accuracy in quantifying the effective orifice area (EOA) in native aortic valves and bioprostheses. This new index, the ejection fraction (EF)-velocity ratio (EFVR), is obtained by dividing the percentage left ventricular EF by the maximum aortic gradient. Objective: To assess the usefulness of this echocardiographic index for quantifying the EOA in patients with aortic bioprosthesis and left ventricular dysfunction. Methods: A total of 70 patients (25 women and 45 men) with aortic bioprosthesis and left ventricular dysfunction (EF of 49% or less) were studied. The mean (± SD) age of the study population was 71.4±9 years. The EOA was evaluated, both by the CE and by the EFVR. Results: A significant linear correlation between the CE and the EFVR was found (r=0.80; P2 or smaller, with positive and negative predictive values of 79% and 95%, respectively. Conclusions: The EFVR, a simple index that is less time-consuming than the CE, allows the identification of patients with aortic bioprosthesis stenosis with excellent sensitivity and specificity. It may be taken into consideration in clinical practice for the evaluation of patients with aortic bioprosthesis stenosis and left ventricular dysfunction.
| Original language | English |
|---|---|
| Journal | Canadian Journal of Cardiology |
| Volume | 25 |
| Issue number | 3 |
| Publication status | Published - 2009 |
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Keywords
- Aortic stenosis
- Bioprosthesis
- Echocardiography
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Medicine(all)
Cite this
Ejection fraction-velocity ratio for the assessment of aortic bioprosthetic valves in patients with systolic dysfunction. / Cattaneo, Paolo; Marchetti, Paolo; Baravelli, Massimo; Rossi, Andrea; Mariscalco, Giovanni; Ghiringhelli, Sergio; Anzà, Claudio.
In: Canadian Journal of Cardiology, Vol. 25, No. 3, 2009.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ejection fraction-velocity ratio for the assessment of aortic bioprosthetic valves in patients with systolic dysfunction
AU - Cattaneo, Paolo
AU - Marchetti, Paolo
AU - Baravelli, Massimo
AU - Rossi, Andrea
AU - Mariscalco, Giovanni
AU - Ghiringhelli, Sergio
AU - Anzà, Claudio
PY - 2009
Y1 - 2009
N2 - Background: The continuity equation (CE) represents the 'gold standard' for the evaluation of aortic valve area in patients with aortic stenosis, but it is time-consuming and subject to error, and can be technically demanding. Recently, a new echocardiographic nonflow corrected index was introduced and demonstrated excellent accuracy in quantifying the effective orifice area (EOA) in native aortic valves and bioprostheses. This new index, the ejection fraction (EF)-velocity ratio (EFVR), is obtained by dividing the percentage left ventricular EF by the maximum aortic gradient. Objective: To assess the usefulness of this echocardiographic index for quantifying the EOA in patients with aortic bioprosthesis and left ventricular dysfunction. Methods: A total of 70 patients (25 women and 45 men) with aortic bioprosthesis and left ventricular dysfunction (EF of 49% or less) were studied. The mean (± SD) age of the study population was 71.4±9 years. The EOA was evaluated, both by the CE and by the EFVR. Results: A significant linear correlation between the CE and the EFVR was found (r=0.80; P2 or smaller, with positive and negative predictive values of 79% and 95%, respectively. Conclusions: The EFVR, a simple index that is less time-consuming than the CE, allows the identification of patients with aortic bioprosthesis stenosis with excellent sensitivity and specificity. It may be taken into consideration in clinical practice for the evaluation of patients with aortic bioprosthesis stenosis and left ventricular dysfunction.
AB - Background: The continuity equation (CE) represents the 'gold standard' for the evaluation of aortic valve area in patients with aortic stenosis, but it is time-consuming and subject to error, and can be technically demanding. Recently, a new echocardiographic nonflow corrected index was introduced and demonstrated excellent accuracy in quantifying the effective orifice area (EOA) in native aortic valves and bioprostheses. This new index, the ejection fraction (EF)-velocity ratio (EFVR), is obtained by dividing the percentage left ventricular EF by the maximum aortic gradient. Objective: To assess the usefulness of this echocardiographic index for quantifying the EOA in patients with aortic bioprosthesis and left ventricular dysfunction. Methods: A total of 70 patients (25 women and 45 men) with aortic bioprosthesis and left ventricular dysfunction (EF of 49% or less) were studied. The mean (± SD) age of the study population was 71.4±9 years. The EOA was evaluated, both by the CE and by the EFVR. Results: A significant linear correlation between the CE and the EFVR was found (r=0.80; P2 or smaller, with positive and negative predictive values of 79% and 95%, respectively. Conclusions: The EFVR, a simple index that is less time-consuming than the CE, allows the identification of patients with aortic bioprosthesis stenosis with excellent sensitivity and specificity. It may be taken into consideration in clinical practice for the evaluation of patients with aortic bioprosthesis stenosis and left ventricular dysfunction.
KW - Aortic stenosis
KW - Bioprosthesis
KW - Echocardiography
UR - http://www.scopus.com/inward/record.url?scp=65449182032&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=65449182032&partnerID=8YFLogxK
M3 - Article
C2 - 19279991
AN - SCOPUS:65449182032
VL - 25
JO - Canadian Journal of Cardiology
JF - Canadian Journal of Cardiology
SN - 0828-282X
IS - 3
ER -