Table 1.
Baseline characteristics of patients according to the rhythm on the pre-percutaneous coronary intervention (PCI) electrocardiogram*
| Characteristics | All (N = 8830) | AF/Flutter (n = 437) | Sinus rhythm (n = 8393) | P† |
|---|---|---|---|---|
| Age, y | 60.8 ± 11.8 | 67.7 ± 11.8 | 60.4 ± 11.7 | < 0.001 |
| Age > 75 y | 1090 (12.3) | 118 (27.0) | 972 (11.6) | < 0.001 |
| Gender, male | 6881 (77.9) | 318 (72.8) | 6563 (78.2) | 0.008 |
| Heart rate, bpm | 77.0 ± 17.1 | 86.8 ± 26.5 | 76.5 ± 16.3 | < 0.001 |
| Systolic BP, mm Hg | 135.9 ± 26.3 | 128.1 ± 28.1 | 136.3 ± 26.2 | < 0.001 |
| Diastolic BP, mm Hg | 82.6 ± 16.4 | 80.2 ± 18.3 | 82.8 ± 16.2 | 0.004 |
| BMI, kg/m2 | 27.6 ± 4.6 | 27.7 ± 4.9 | 27.6 ± 4.6 | 0.870 |
| Killip class ≥ 2 | 365 (4.1) | 34 (7.8) | 331 (3.9) | < 0.001 |
| Location of MI | 0.006 | |||
| Anterior | 3660 (41.4) | 149 (34.1) | 3511 (41.8) | |
| Inferior | 4699 (53.2) | 268 (61.3) | 4431 (52.8) | |
| Lateral or other | 465 (5.3) | 20 (4.6) | 445 (5.3) | |
| Medical history | ||||
| Previous stroke | 261 (3.0) | 35 (8.0) | 226 (2.7) | < 0.001 |
| Hypertension | 4398 (49.8) | 267 (61.1) | 4131 (49.2) | < 0.001 |
| Diabetes | 1595 (18.1) | 91 (20.8) | 1504 (17.9) | 0.124 |
| Previous MI | 817 (9.3) | 61 (14.0) | 756 (9.0) | < 0.001 |
| Previous PCI | 750 (8.5) | 46 (10.5) | 704 (8.4) | 0.118 |
| Peripheral arterial disease | 203 (2.3) | 23 (5.3) | 180 (2.1) | < 0.001 |
| Current smoker | 4037 (45.7) | 159 (36.4) | 3878 (46.2) | < 0.001 |
Values are n (%) or mean ± standard deviation, unless otherwise indicated.
AF, atrial fibrillation; BMI, body mass index; BP, blood pressure; bpm, beats per minute; MI, myocardial infarction; PCI, percutaneous coronary intervention.
⁎
The analysis population was defined as STEMI patients with sinus rhythm or AF/Atrial flutter in the pre-PCI ECG.
†
P value is from χ2 test for categorical variables, and 2-sample t test for continuous variables.