McCubrey et al reported scores for major adverse cardiac events based on findings including cardiac positron emission (PET)/CT scan results. There was a risk score for 90-day and 1-year outcomes. The authors are from Intermountain Healthcare, Stanford University, and the University of Utah.
Outcome: major adverse cardiac events (MACE) or revascularization)
Parameters:
(1) ischemic burden
(2) coronary artery calcium (CAC)
(3) coronary flow reserve
(4) transient ischemic dilation
(5) patient status
(6) current smoker
(7) diabetic
(8) body mass index (BMI)
Parameter
Finding
Points
ischemic burden
< 5
0
5 to 10
4
> 10
6
coronary artery calcium
absent
0
present
5
coronary flow reserve
< 1.5
3
1.5 to 2.3
1
> 2.3
0
transient ischemic dilation
<= 1.1
0
> 1.1
1
patient status
outpatient
0
inpatient
2
current smoker
no
0
yes
2
diabetic
no
0
yes
1
body mass index
< 30
0
>= 30 kg per sq m
-2
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: -2
• maximum score: 20
Total Score
Risk Category
-2 to 5
low
6 to 10
moderate
11 to 20
high
Performance:
• The area under the ROC for MACE was 0.80.
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