Table 1 Characteristics of patients (not) at high risk for contrast-induced nephropathy
Characteristics | Patients at high risk | Patients not at high risk | Pa |
|---|---|---|---|
n = 627 | n = 3514 | ||
Sex, % male | 54.5 | 54.1 | 0.831 |
Age in years, mean (SD) | 74.9 (9.5) | 64.0 (13.7) | < 0.001 |
Length of stay in days, mean (SD) | 4.7 (8.6) | 3.4 (11.1) | 0.004 |
Day admission, % | 32.4 | 39.2 | 0.005 |
Acute admission, % | 27.7 | 22.1 | 0.002 |
eGFR in ml/min/1.73 m2, mean (SD) | 44.0 (11.6) | 70.6 (17.1) | < 0.001 |
Risk factors for CIN, % | |||
    0 risk factors | 1.1 | 42.0 | < 0.001 |
    1 risk factor | 9.7 | 26.6 | |
    2 risk factors | 31.3 | 15.8 | |
    ≥3 risk factors | 57.9 | 15.7 | |
Diabetes mellitus | 31.4 | 13.3 | < 0.001 |
Peripheral vascular disease | 20.4 | 9.6 | < 0.001 |
Heart failure | 39.2 | 19.9 | < 0.001 |
Age > 75 year | 52.3 | 18.8 | < 0.001 |
Anemia | 8.9 | 2.7 | < 0.001 |
Symptomatic hypotension | 1.6 | 0.5 | 0.002 |
Contrast volume > 150 ml | 1.6 | 0.8 | 0.054 |
Decreased circulating volume | 0.16 | 0.03 | 0.169 |
Use of diuretics | 41.3 | 15.1 | < 0.001 |
Use of nephrotoxic drugs | 52.0 | 30.4 | < 0.001 |