Description

Christianson et al developed a "pen and paper" risk estimator for coronary heart disease (CHD) in a patient with Type 2 diabetes. This can help identify a patient who may benefit from more aggressive management of risk factors. The authors are from the Mayo Clinic.


NOTE: The risk estimator is based on the UKPDS risk equation.

 

Parameters:

(1) age and gender

(2) duration of diabetes in years

(3) smoking status

(4) hemoglobin A1c in percent

(5) systolic blood pressure in mm Hg

(6) total cholesterol to HDL cholesterol ratio

(7) urinary microalbumin in micrograms per minute

 

Parameter

Finding

Points

age and gender

female and < 60 years

0

 

female and 60 - 74.9 years

9

 

female and >= 75 years

22

 

male and < 60 years

6

 

male and 60 - 74.9 years

20

 

male and >= 75 years

41

duration of diabetes in years

< 5 years

0

 

5 - 9.9 years

2

 

>= 10 years

5

smoking status

never

0

 

former

0

 

current

2

percent hemoglobin A1c

< 7%

0

 

7.0 - 7.9%

2

 

>= 8.0%

6

systolic blood pressure

< 120 mm Hg

0

 

120 - 139 mm Hg

1

 

>= 140 mm Hg

4

total cholesterol to HDL cholesterol ratio

< 4.0

0

 

4.0 - 5.9

6

 

>= 6.0

10

microalbuminuria

< 30 micrograms per minute

0

 

>= 30 micrograms per minute

1

 

where:

• Microalbumin in micrograms per minute probably requires a 24 hour urine, with 24 hours = 1440 minutes and 1 mg = 1000 micrograms.

 

total score =

= SUM(points for all 7 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 69

• The higher the score the greater the risk of coronary heart disease.

 

Total Score

Risk Group

Probability of CHD in Next 10 Years

<= 17

average

< 15%

18 - 31

elevated

15 - 30%

>= 32

high

> 30%

 


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