Table 1.
Clinical Characteristics by Median TpTe Interval
| Characteristic | All patients (N=84) |
TpTe < 75 ms (N=41) |
TpTe ≥ 75 ms (N=43) |
P value |
|---|---|---|---|---|
| T peak – T end interval (ms) | 75±17 | 61±8 | 88±11 | |
| Age (years) | 52±14 | 45±12 | 58±13 | <0.0001* |
| Female (n, %) | 40 (47) | 24 (58) | 16 (37) | 0.05 |
| Body-mass index (kg/m2) | 26±5 | 25±4 | 27±5 | 0.02 |
| Comorbidities (n, %) | ||||
| Hypertension | 28 (34) | 12 (30) | 16 (37) | 0.48 |
| Coronary artery disease | 20 (24) | 7 (17) | 13 (30) | 0.17 |
| Diabetes mellitus | 5 (6) | 2 (5) | 3 (7) | 0.70 |
| Chronic kidney disease | 5 (6) | 3 (7) | 2 (5) | 0.58 |
| Dyslipidemia | 37 (44) | 15 (37) | 22 (51) | 0.21 |
| Obesity | 17 (20) | 5 (12) | 12 (28) | 0.10 |
| Medications (n, %) | ||||
| Beta-blocker | 31 (37) | 14 (35) | 17 (40) | 0.61 |
| ACE-I / ARB | 24 (29) | 8 (20) | 16 (38) | 0.08 |
| Aspirin | 32 (38) | 11 (27) | 21 (49) | 0.046 |
| Statin | 31 (38) | 13 (32) | 18 (43) | 0.33 |
| Diuretic | 10 (12) | 5 (12) | 5 (12) | 0.93 |
| Laboratory data | ||||
| Serum potassium (mEq/L) | 4.1±0.5 | 4.2±0.4 | 4.1±0.5 | 0.72 |
| Estimated GFR (ml/min/1.73m2) | 77±22 | 78±24 | 75±21 | 0.58 |
ACE-I / ARB = angiotensin converting enzyme inhibitor or angiotensin receptor blocker
GFR = glomerular filtration rate
*
Remains significant after correction for multiple comparisons