Table 1 CHA₂DS₂VASc [18, 19] and Mehran’s score [5] definitions and calculation

CHA₂DS₂VASc score

C

1

Congestive heart failure or LVEF ≤ 40%

H

1

Hypertension; BP consistently > 140/90 mmHg, or controlled on medications

A₂

2

Age ≥ 75 years

D

1

Diabetes mellitus, defined as HbA1c ≥ 6.5 gm/dL or controlled on medications

S₂

2

Stroke, TIA or systemic thromboembolism

V

1

Vascular disease, defined as prior MI, peripheral arterial disease or aortic plaque

A

1

Age 65–74 years

Sc

1

Sex category (female)*

Mehran’s risk score

Hypotension

5

Systolic BP < 80 mmHg or > 1 h on inotropic support

Heart failure

5

NYHA class III/IV or recent pulmonary edema

IABP

5

Intra-aortic balloon pump therapy

Age

4

If > 75 years

Anemia

3

HCT < 0.39 for males, < 0.36 for females

Diabetes

3

Diabetes mellitus affecting blood sugar levels

eGFR

2

For eGFR 60–40 mL/min

4

For eGFR 40–20 mL/min

6

For eGFR < 20 mL/min

Contrast volume

1 point for every 100 mL

Total Mehran’s score

< 5

6–10

11–16

> 16

CIN risk

7.5%

14%

26.1%

57.3%

Dialysis risk

0.04%

0.12%

1.09%

12.6%