The Clinical Features and Emotional Stressors in Korean Patients with Tako-Tsubo Cardiomyopathy

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.