The following were the major findings, at least 24 to 48 hours before an actual myocardial infarction took place, reporting in ER, the ECG and cardiac enzymes were negative but they ended in CCU: Chest pain off and on. Shortness of breath. Exertional angina relieved after sitting or lying down Patient will be irritable. Depressed/ depressive appearance Mild yellowish tinge of face. Smoker. Family history. The above show something is churning up, so admit such patient under observation on ACS protocol. I tell you experience is the Key Word.