Table 1.
Patients characteristics
| AF patients (N = 48) | Control subjects (N = 22) | P value | |
|---|---|---|---|
| Male (%) | 36 (75) | 16 (73) | 0.53 |
| Age, years | 70 (58–76) | 67 (62–72) | 0.92 |
| BMI, kg/m2 | 23.2 (21.4–25.3) | 22.7 (21.8–26.4) | 0.21 |
| Diabetes (%) | 17(35) | 8 (36) | 0.75 |
| Baseline glucose, mg/dl | 98.1 (88.2–130.5) | 98.1 (88.2–117.9) | 0.87 |
| Hypertension (%) | 28 (58) | 0 (0) | 0.000 |
| Coronary artery disease (%) | 10 (21) | 0 (0) | 0.016 |
| Congestive heart failure (%) | 5 (10) | 0 (0) | 0.14 |
| Stroke (%) | 6 (13) | 0 (0) | 0.09 |
| Malignancy (%) | 26 (54) | 0 (0) | 0.000 |
| LAVI, ml/m2 | 22.2 (14.6–34.9) | 16.0 (13.5–18.0) | 0.003 |
| RA area, cm2 | 17.5 (14.7–24.3) | 13.6 (12.6–14.6) | 0.000 |
| Adequate myocardial suppression | 21 (44) | 8 (36) | 0.38 |
| SUVmax | |||
| Left atrium | 1.6 (1.5–1.7) | 1.6 (1.3–1.8) | 0.33 |
| Right atrium | 1.7 (1.5–2.6) | 1.5 (1.1–1.6) | 0.000 |
| Left appendage | 2.1 (1.8–2.5) | 1.9 (1.5–2.1) | 0.013 |
| Right appendage | 2.1 (1.9–2.6) | 1.8 (1.5–2.1) | 0.002 |
| Left ventricle | 3.4 (2.0–5.8) | 3.0 (2.2–7.4) | 0.96 |
| Spleen | 2.4 (2.1–2.7) | 2.1 (1.9–2.3) | 0.25 |
| Bone marrow | 2.8 (2.4–3.3) | 2.4 (2.1–2.9) | 0.16 |
| Right coronary artery | 1.3 (1.2–1.7) | 1.0 (0.8–1.6) | 0.006 |
| SUVmean of blood pool | 1.8 (1.6–2.0) | 1.8 (1.7–2.1) | 0.56 |
| TBR | |||
| Left atrium | 0.8 (0.8–0.9) | 0.9 (0.8–0.9) | 0.18 |
| Right atrium | 0.9 (0.8–1.6) | 0. 8 (0.6–0.9) | 0.000* |
| Left appendage | 1.1 (1.0–1.4) | 0.9 (0.8–1.1) | 0.002* |
| Right appendage | 1.2 (1.0–1.4) | 0.9 (0.8–1.1) | 0.000* |
AF, atrial fibrillation; BMI, body mass index; LAVI, left atrium volume index; RA, right atrium; SUVmax, maximum standardized uptake value; SUVmean, mean standardized uptake value; TBR, target-to-background ratio