Ladouceur et al reported a score for evaluating a patient with transposition of the great arteries. This can help to identify a patient who may require in implantable cardoverter defibrillator or other intervention. The authors are from multiple institutions in Europe.
Patient selection: transposition of the great arteries and a systemic right ventricle
Outcome: life-threatening ventricular arrhythmias or sudden death
Parameters:
(1) age in years
(2) heart failure
(3) syncope
(4) systemic right ventricular dysfunction
(5) left ventricular outflow tract obstruction (LVOTO) in mm Hg
(6) QRS duration in ms
Parameter
Finding
Ponts
age in years
0.03145 * (age)
heart failure
no
0
yes
1.0129
syncope
no
0
yes
1.7084
right ventricular dysfunction
none to moderate
0
severe
1.188
LVOTO
<= 36 mm Hg
0
> 36 mm Hg
1.0160
QRS duration
0.01681 * (QRS)
total score =
= SUM(points for all of the parameters)
5-year risk of ventricular arrhythmia or sudden death =
= 1 - ((0.9996)^(EXP(score)))
Performance:
• The area under the ROC curve is 0.78.
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