Transient elevation of the ST segment was observed in a patient during noncardiogenic shock. The coronarography was negative. The patient received dopamine infusion. The 48 yr-old man had Crohn disease with septicaemia and ARDS. The exact pathomechanism is not known, but the negative coronarography ruled out the epicardial coronary disease. The suggested mechanisms are dopamine induced coronary vasoconstriction or complement activation.