Table 2.
Perfusion parameter of controls (n = 79) and DM patients (n = 120) with different BMI
| Controls (n = 79) | DM patients (n = 120) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Normal-weight (n = 33) | Overweight (n = 27) | Obese (n = 19) | P valueå | Normal-weight (n = 51) | Overweight (n = 29) | Obese (n = 40) | P valueß | ||
| Basal | |||||||||
| Upslope | 2.26 ± 0.84 | 1.82 ± 0.55 | 1.35 ± 0.42* | 0.000 | 1.85 ± 0.53 | 1.40 ± 0.34* | 1.10 ± 0.35* § | 0.000 | |
| TTM (sec) | 25.22 ± 10.85 | 32.17 ± 17.42 | 33.17 ± 14.12 | 0.084 | 35.36 ± 17.05 | 35.75 ± 18.83 | 35.36 ± 15.52 | 0.929 | |
| MaxSI | 17.24 ± 6.54 | 16.27 ± 4.14 | 13.24 ± 3.07* | 0.028 | 16.34 ± 5.18 | 11.33 ± 3.76* | 9.33 ± 3.01* | 0.000 | |
| MaxSI (- baseline) | 15.93 ± 4.26 | 13.29 ± 4.61 | 10.62 ± 2.65* | 0.000 | 12.63 ± 4.40 | 8.06 ± 2.58* | 7.31 ± 2.52* | 0.000 | |
| SI (baseline) | 3.72 ± 1.43 | 3.35 ± 0.95 | 2.63 ± 0.80* | 0.006 | 3.13 ± 1.42 | 2.29 ± 0.87* | 2.20 ± 0.95* | 0.000 | |
| Mid-ventricular | |||||||||
| Upslope | 2.93 ± 1.03 | 2.31 ± 0.72* | 1.80 ± 0.60* | 0.000 | 2.37 ± 0.70 | 1.99 ± 0.54* | 1.37 ± 0.41* § | 0.000 | |
| TTM (sec) | 27.31 ± 13.86 | 31.68 ± 16.61 | 33.25 ± 13.83 | 0.313 | 34.19 ± 16.14 | 35.93 ± 20.13 | 34.26 ± 12.55 | 0.884 | |
| MaxSI | 21.78 ± 7.83 | 20.59 ± 5.32 | 16.58 ± 3.96* | 0.018 | 21.29 ± 6.54 | 15.01 ± 4.14* | 12.22 ± 3.91* | 0.000 | |
| MaxSI (- baseline) | 19.63 ± 5.25 | 16.74 ± 5.41 | 13.14 ± 3.42* | 0.000 | 16.38 ± 5.39 | 10.83 ± 3.48* | 9.49 ± 3.33* | 0.000 | |
| SI (Baseline) | 4.83 ± 1.60 | 4.36 ± 1.51 | 3.39 ± 0.96* | 0.004 | 4.22 ± 1.73 | 3.08 ± 1.00* | 2.86 ± 1.06* | 0.000 | |
| Apex | |||||||||
| Upslope | 3.69 ± 1.19 | 2.95 ± 0.85* | 2.19 ± 0.62* | 0.000 | 3.03 ± 0.91 | 2.44 ± 0.70* | 1.80 ± 0.57* § | 0.000 | |
| TTM (sec) | 27.81 ± 13.87 | 32.43 ± 16.55 | 35.01 ± 14.62 | 0.221 | 34.20 ± 15.75 | 36.74 ± 19.94 | 35.26 ± 13.31 | 0.794 | |
| MaxSI | 26.90 ± 10.28 | 26.67 ± 6.84 | 20.76 ± 4.42 | 0.021 | 24.42 ± 8.50 | 19.94 ± 5.17* | 16.19 ± 4.91* | 0.000 | |
| MaxSI (- baseline) | 24.32 ± 7.72 | 21.37 ± 5.41 | 16.50 ± 4.03* | 0.000 | 21.52 ± 7.40 | 13.82 ± 4.21* | 12.68 ± 4.10* | 0.000 | |
| SI (baseline) | 5.80 ± 2.06 | 5.27 ± 2.05 | 4.36 ± 1.47 | 0.041 | 5.57 ± 2.16 | 4.15 ± 1.33* | 3.70 ± 1.38* | 0.000 | |
Values are means ± standard deviations
P valueå, P valueß: P values refer to the differences among three subgroups across different BMI scales within controls (å) or DM patients (ß) based on Fisher’s exact test or one-way analysis of variance followed by Bonferroni’s post hoc test; *P < 0.017 versus Normal weight group; §P < 0.017 versus overweight group