Table 1.
Clinical characteristics and myocardial perfusion scintigraphic parameters
| All patients n = 319 | No myocardial ischemia n = 171 | Myocardial ischemia n = 148 | P-value | |
|---|---|---|---|---|
| Clinical characteristics | ||||
| Male | 201 (63) | 93 (54) | 108 (73) | .001 |
| Age (years) | 65 (9) | 64 (9) | 66 (9) | .04 |
| CCS II/IV | 130 (41) | 61 (36) | 69 (47) | .05 |
| Medical history (%) | ||||
| Previous MI | 92 (29) | 43 (25) | 49 (33) | |
| Previous PCI | 87 (27) | 55 (32) | 32 (22) | .04 |
| Previous CABG | 56 (18) | 30 (18) | 26 (18) | |
| Duration diabetes (years) | 8 (7) | 8 (7) | 8 (7) | |
| <5 years | 119 (38) | 62 (38) | 57 (39) | |
| >10 years | 92 (30) | 46 (28) | 46 (31) | |
| Insulin | 122 (38) | 67 (39) | 55 (37) | |
| Risk factors (%) | ||||
| Hypertension | 176 (55) | 98 (57) | 78 (53) | |
| Smoking | 56 (18) | 26 (15) | 30 (20) | |
| Previous smoker | 162 (51) | 84 (49) | 78 (53) | |
| Family history | 116 (36) | 71 (42) | 45 (30) | .04 |
| Hypercholesterolemia | 201 (63) | 108 (63) | 93 (63) | |
| Body mass index kg/m2 (BMI) | 29.4 (4) | 30 (4) | 29 (4) | |
| Normal, <24.9 | 36 (11) | 17 (10) | 19 (13) | |
| Obesitas, I > 29.9 | 128 (40) | 69 (41) | 59 (40) | |
| Drug therapy (%) | ||||
| Aspirin | 268 (84) | 140 (82) | 128 (87) | |
| Statin | 233 (73) | 130 (76) | 103 (70) | |
| ACE-inhibition | 130 (41) | 74 (43) | 56 (38) | |
| Beta blockade | 233 (73) | 128 (75) | 105 (71) | |
| Long-acting nitrate | 122 (38) | 52 (30) | 70 (47) | .002 |
| Calcium-antagonist | 139 (44) | 64 (37) | 75 (51) | .02 |
| Insulin | 122 (38) | 67 (39) | 55 (37) | |
| ECG-abnormalities | 158 (50) | 72 (42) | 86 (58) | .004 |
| MPS results | ||||
| SSS | 8 (8) | 4.4 (6.8) | 12.3 (6.8) | <.001 |
| SRS | 4.3 (6) | 3.9 (6.7) | 4.8 (6.1) | |
| SDS | 3.7 (4.5) | 0.4 (0.7) | 7.5 (4.0) | <.001 |
| Any perfusion abnormality | 208 (65) | 60 (35) | 148 (100) | |
| At least one fixed defect* | 138 (43) | 60 (35) | 78 (53) | |
Values are presented as n (%) or as mean (SD) unless otherwise indicated.
CCS, Canadian Cardiovascular Society; MI, myocardial infarction; PCI, percutaneous coronary intervention; CABG, coronary artery bypass grafting; ACE, angiotensin-converting enzyme; SSS, summed stress score; SRS, summed rest score; SDS, summed difference score.
*Also included patients with mixed defects: fixed and reversible.