Zamfirescu et al reported the DEI score for predicting readmission for a patient hospitalized with a first episode of acute heart failure with preserved ejection fraction (HFpEF). The authors are from multiple institutions in Romania and University of Oxford.
DEI is an acronym based on letters from the 3 parameters.
Patient selection: first episode of acute heart failure with preserved ejection fraction (HFpEF)
Parameters:
(1) left ventricular end-diastolic diameter (LVEDD) in mm (D)
(2) E/e' ratio (E)
(3) left ventricle outflow tract velocity•time integral (LVOT VTI, I) in cm
Parameter
Points
LVEDD
4.558 * LN(LVEDD)
E/e' ratio
1.961 * LN(E/e')
LV outflow tract velocity•time integral
1.759 * LN (LVOT VTI)
DEI score =
= SUM(points for all of the parameters) - 28.763
Interpretation:
• A score > -0.747 is associated with 6-month readmission.
Based on Figure A3::
value of X =
= (0.9964 * (score)) - 0.006326
probability of 6-month readmission =
= 1 / (1 + EXP((-1) * X))
Performance:
• The area under the ROC curve is 0.75.
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