Table 2: The comparison of electrocardiographic changes, laboratory, and angiographic findings between the subgroups.

Total (n = 103)E group (n = 15)Other group (n = 88)P

Electrocardiographic changes
 Life-threatening arrhythmia, n (%)16 (16)0 (0)16 (18)0.072
 Heart rate (beats/min)80.0 (66.0–91.0)66.0 (58.0–72.0)84.0 (71.0–95.0)0.001*
 Atrial fibrillation, n (%)6 (6)0 (0)6 (7)0.297
 Corrected QT interval (ms)438.0 (422.8–486.0)477.5 (434.0–544.0)438.0 (417.0–482.3)0.002*
 ST-segment elevation, n (%)73 (71)13 (87)60 (68)0.145
 Q-wave, n (%)13 (13)0 (0)13 (15)0.111
 T-wave inversion, n (%)79 (77)12 (80)67 (76)0.744
Laboratory findings
 hs-CRP (mg/L)2.3 (0.8–11.1)0.1 (0.1–10.0)3.3 (1.0–11.4)0.001*
 NT-proBNP (pg/mL)3210.0 (1102.0–30181.0)2145.0 (613.3–5059.0)4939.0 (1458.0–33017.0)0.020*
Cardiac enzymes
 Peak CK (ng/mL)279.0 (93.0–632.0)279.0 (519.0–619.5)270.5 (90.0–607.0)0.421
 Peak CK-MB (ng/mL)11.9 (2.8–33.9)5.5 (1.5–23.7)11.9 (3.8–34.8)0.047*
 Peak troponin-I (ng/mL)2.0 (0.2–11.1)1.0 (0.1–3.3)3.2 (0.2–13.3)0.011*
Angiographic findings
 LVEDP (mmHg)19.0 (13.0–25.0)14.0 (9.0–20.0)19.0 (13.0–25.0)0.039*

Life-threatening arrhythmia: third-degree atrioventricular block, ventricular tachycardia, ventricular fibrillation, cardiac arrest; LVEDP: left ventricular end diastolic pressure.
Presented as median (inter-quartile range). *Significant finding.