Which stands for non-ST elevated myocardial infarction is almost the same clinically as STEMI. As referred by its abbreviation, NSTEMI is characterized by the absence of the specific electrical pattern presented in the ECG of most heart attacks. Patients with NSTEMI could be more challenging to get diagnosed but fortunately, NSTEMI is believed to be presented with the same symptoms as STEMI which will guide the attention of the doctor toward cardiac issues. It is believed that both STEMI and NSTEMI are as severe and require rapid assessment and intervention. The earlier PCI is performed on patients with CAD (coronary artery disease), the better the outcome and the fewer complications.