Coronary artery disease 80%
Cardiomyopathies, Myocarditis
Valvular heart disease
Genetic diseases (LQTS, SQTS, Brugada Syndrome, others)
Rupture of an aortic aneurysm
Pulmonary embolism, Rupture of an pulmonary artery (pulmonary hypertension)
Tamponade
Mechanical causes (STEMI)
Congenital heart disease (tetralogy of Fallot, transposition of the great arteries, single ventricle)
Non-cardiac (dyselectrolitemia and metabolic disordersdrug toxicity – includes ilicit drugs, alcohol, designer drugs)