The certain proportion of the patients with ECG changes actually didn't have coronary artery disease(9,15) or other acute cardiac condition and therefore require treatment of the underlie illness only without spend the time for cardiac investigation or special treatment(1,3,4,7,8). Some kind of treatment may be even harmful for the patients with abdominal illness such as thrombolytic, anticoagulant, aggressive antiaggregant therapy or unnecessary cardiac catheterization.