The coronary slow flow phenomenon is an angiographic. finding characterized by delayed distal vessel opacification in the absence of epicardial coronary artery disease. Patients often present with acute coronary syndrome. Histopathologic studies have revealed the existence of. bromuscular hyperplasia and myofibrilar hypertrophy. Apical hypertrophic cardiomyopathy is a benign progressive form of hypertrophic cardiomyopathy, that is rarely observed in western communities. It remains commonly asymptomatic until advanced ages. Syncope, arrhythmia or sudden death may be the first symptom. We report a case of slow coronary arterial flow in a 71-year-old male patient with apical hypertrophic cardiomyopathy who experienced chest pain and sudden cardiac arrest due to ventricular arrhythmia.