PETMAC Mnemonic for Deadly Causes of Chest Pain P - Pulmonary Embolism E - Esophageal Rupture T - Tension Pneumothorax M - Myocardial Infarction (ACS) A - Aortic Dissection C - Cardiac Tamponade #PETMAC #Mnemonic #Acronym #Lethal #Differential #Diagnosis #Chest #Pain #ChestPain