From our 2019 NYGH EM Update conference, ECG master Dr Amal Mattu walks the audience through cases of pericarditis with effusion/tamponade that could easily be mistaken for STEMI, pulmonary embolism or endocarditis. Learn some key pearls and pitfalls from Dr Mattu on formulating a DDx, avoiding premature anchoring/closure, how to interpret the ECG and the use of cardiac POCUS.