Controls (76) n (%)

CAP without CCF (62)

n (%)

CAP with CCF (14)

n (%)

χ2

p-value

ECG parameters

Sinus Tachycardia

7 (9.2)

18 (29.0)

6 (42.9)

13.056

0.001*

Prolonged PR interval

4 (5.3)

10 (16.1)

0 (0)

5.335

0.046*

Reduced QRS amplitude in limb leads

0 (0)

11 (17.7)

2 (14.3)

16.878

0.002*

Right axis deviation

4 (5.3)

14 (22.6)

2 (14.3)

9.016

0.008*

Prolonged QTc

0 (0)

14 (22.6)

2 (14.3)

21.737

0.0001*

Serum cTnT

<50

76 (100.0)

5.8 (93.5)

12 (85.7)

8.239

0.006*

≥50

0 (0)

4 (6.5)

2 (14.3)