Digoxin toxicity induced frequent arrhythmia -- Myocarditis and cardiogenic shock -- Alcohol induced cardiomyopathy and cardiogenic shock -- Interactable hypokalemia and torsade de pointes -- Complete heart block and clot in RCA -- Sustained ventricular tachycardia in a patient with HOCM -- Saddle pulmonary embolism and intractable atrial fibrillation -- ST elevation MI and spontaneous coronary artery dissection -- Frequent inappropriate ICD shock -- Post dialysis hypotention ,new diagnosis of HOCM -- Hyperparathyroidism and calcified Mitral and aortic valve disease -- Cardiac amyloidosis and syncope -- TV endocarditis and recurrent septic embolism -- Recurrent chest pain and lytic lesion in spine -- Acute type A aortic dissection in a young man -- Prostate cancer and tachycardia -- Cocaine and tachycardia -- VT or artifact -- Atrial flutter vs flecainide effect -- ST depression in Holter, associated with chest pain -- Hypotension post below knee amputation -- Shortness of breath on exertion and Mobitz type 2 AV block -- Stroke and mitral valve endocarditis -- Atrial fibrillation with rapid ventricular response and heart failure with reduced EF -- Takotsubo cardiomyopathy -- Beker dystrophy and cardiomyopathy -- HOCM and aortic valve stenosis presents at the same time.