Table 1.
Baseline Patient Characteristics
| Characteristic | All patients n=71 | MI n=46 | No MI n=25 | P value |
|---|---|---|---|---|
| Age - years | ||||
| Mean ± standard deviation |
57.9 ± 11.1 |
59.9 ± 9.9 |
54.2 ± 12.6 |
0.04 |
| Maximum, minimum |
28, 83 |
38, 83 |
28,80 |
|
| Male sex – no (%) |
52 (73) |
35 (76) |
17 (68) |
0.47 |
| CAD Risk Factors – no (%) | ||||
| Family history |
12 (17) |
8 (17) |
4 (16) |
0.89 |
| Hypertension |
49 (69) |
37 (80) |
12 (48) |
0.006 |
| Dyslipidemia |
49 (69) |
40 (87) |
9 (36) |
< 0.0001 |
| Diabetes |
15 (21) |
14 (30) |
1 (4) |
0.012 |
| Smoking |
27 (38) |
20 (57) |
7 (28) |
0.21 |
| Known CAD – no (%) |
38 (54) |
37 (80) |
1 (4) |
<0.0001 |
| >3 CAD Risk Factors- no (%) |
21 (30) |
18 (39) |
3 (12) |
0.002 |
| Medications (%) | ||||
| Anti-platelets/anti coagulants | ||||
| Aspirin |
49 (69) |
41 (89) |
8 (32) |
<0.0001 |
| Clopidogrel/Prasugrel |
18 (25) |
18 (39) |
0 (0) |
0.0004 |
| Warfarin |
4 (6) |
3 (7) |
1 (4) |
0.69 |
| Anti-hypertensives | ||||
| Beta blocker |
48 (68) |
39 (85) |
9 (36) |
<0.0001 |
| Calcium channel blocker |
8 (11) |
5 (11) |
3 (12) |
0.89 |
| ACE inhibitor |
28 (39) |
21 (46) |
7 (28) |
0.16 |
| ARB |
9 (13) |
8 (17) |
1 (4) |
0.12 |
| Diuretic |
15 (21) |
9 (20) |
6 (24) |
0.67 |
| Long acting nitrates |
6 (8) |
6 (13) |
0 (0) |
0.08 |
| Lipid Medications | ||||
| Statin |
44 (62) |
38 (83) |
6 (24) |
< 0.0001 |
| Other lipid therapy |
8 (11) |
5 (11) |
3 (12) |
0.89 |
| Diabetes Medications | ||||
| Insulin |
7 (10) |
7 (15) |
0 (0) |
0.052 |
| Oral diabetes agents |
11 (16) |
10 (22) |
1 (4) |
0.059 |
| No Cardiovascular Medications |
9 (13) |
1 (2) |
8 (32) |
0.0002 |
| Left ventricular ejection fraction % | ||||
| Median, interquartile range |
56, 15 |
51, 20 |
60,8 |
0.002 |
| Indication for scan (%) | ||||
| Ischemia Assessment with Stress |
37 (52) |
22 (48) |
15 (60) |
0.34 |
| Viability |
22 (31) |
22 (48) |
0 (0) |
<0.0001 |
| Other |
12 (17) |
2 (4) |
10 (40) |
0.0002 |
| Nonischemic cardiomyopathy |
7 (10) |
1 (2) |
6 (24) |
|
| Aorta |
3 (4) |
1 (2) |
2 (8) |
|
| Congenital | 2 (3) | 0 (0) | 2 (8) | |