Table 1 Classification of ACM patients (n = 31) according to the current recommendations [12]

Clinical presentation

 Acute chest pain

23

 New-onset (days up to 3 months) or worsening of: dyspnoea at rest or exercise/fatigue, with or without left and/or right heart failure signs

16

 Palpitations/arrhythmia symptoms/syncope/aborted sudden cardiac death

18

 Cardiogenic shock

1

Diagnostic criteria

 ECG/Holter/stress test features

31

 Elevated TnT/TnI

26

 Functional and structural abnormalities on cardiac imaging (echo/angio/CMR)

31

 Tissue characterization by CMR

  Visual edema (T2-weighted imaging)

23

  T2-Ratio ≥1.9 [6, 22]

25

  Early Enhancement Ratio (EGEr) >4

17

  Visual LGE of non ischemic pattern

30

  Edema + EGEr positive

1

  Edema + LGE positive

9

  EGEr + LGE positive

6

  3 out of 3 criteria positive

15

Exclusion of CAD by coronary angiography

31