Table 1.
Baseline characteristics, overall, and comparing the different contrast medium groups
| mean ± SD, median (Q1–Q3), or N (%) | Overall (N = 60) |
Group 1 60 mL (N = 15) |
Group 2 50 mL (N = 15) |
Group 3 40 mL (N = 15) |
Group 4 30 mL (N = 15) |
p value |
|---|---|---|---|---|---|---|
| Age, years | 79.4 ± 7.5 | 79.0 ± 7.3 | 77.4 ± 10.1 | 80.0 ± 7.5 | 81.3 ± 4.4 | 0.554 |
| Sex | 0.583 | |||||
| Male | 32 (53.3) | 8 (53.3) | 6 (40.0) | 10 (66.7) | 8 (53.3) | |
| Female | 28 (46.7) | 7 (46.7) | 9 (60.0) | 5 (33.3) | 7 (46.7) | |
| BMI, kg/m2 | 26.2 ± 5.0 | 24.9 ± 4.6 | 26.3 ± 6.2 | 25.5 ± 3.5 | 28.1 ± 5.2 | 0.326 |
| Agatston Score | 2,528.0 [1,724.3–4,109.8] | 2,227.0 [1,445.5–4,244.0] | 2,363.0 [1,301.0–3,216.5] | 3,628.0 [2,304.0–4,708.0] | 2,415.0 [1,897.0–2,811.5] | 0.222 |
| CTA scan duration, s | 17.2 ± 2.1 | 17.3 ± 2.1 | 16.7 ± 2.2 | 17.4 ± 2.2 | 17.3 ± 2.2 | 0.831 |
| EuroScore II |
1.8 [0.9–3.6] |
2.6 [1.2–3.6] |
2.4 [0.6–4.1] |
1.6 [0.8–2.5] |
1.7 [0.8–2.7] |
0.621 |
| Creatinine, mg/dL |
1.0 [0.8–1.2] |
0.9 [0.8–1.1] |
1.0 [0.8–1.5] |
1.0 [0.8–1.1] |
1.1 [0.8–1.3] |
0.740 |
| GFR, mL/min/1.73 m2 | 61.4 ± 26.2 | 59.0 ± 25.8 | 63.7 ± 36.1 | 68.3 ± 19.6 | 54.7 ± 20.5 | 0.532 |
| Chronic renal failure | 0.611 | |||||
| No | 41 (68.3) | 11 (73.3) | 9 (60.0) | 12 (80.0) | 9 (60.0) | |
| Yes | 19 (31.7) | 4 (26.7) | 6 (40.0) | 3 (20.0) | 6 (40.0) | |
| EF | 0.979 | |||||
| Normal (> 50%) | 46 (76.7) | 11 (73.3) | 12 (80.0) | 12 (80.0) | 11 (73.3) | |
| Moderately reduced (41–50%) | 7 (11.7) | 2 (13.3) | 2 (13.3) | 2 (13.3) | 1 (6.7) | |
| Reduced (31–40%) | 4 (6.7) | 1 (6.7) | 1 (6.7) | 0 (0.0) | 2 (13.3) | |
| Severely reduced (< 30%) | 3 (5.0) | 1 (6.7) | 0 (0.0) | 1 (6.7) | 1 (6.7) |
Categorical variables were compared using the Fisher exact test, continuous variables using the one-way ANOVA test for normal distribution, or the Kruskal–Wallis t-test for asymmetric distribution
BMI, body mass index; CTA, computed tomography angiography; GFR, glomerular filtration rate; EF, ejection fraction