The article discusses the clinical features of sudden obstruction of the coronary arteries, a condition that has long been considered highly fatal. However, the author argues that not all cases of coronary obstruction lead to immediate death, and some patients can survive for several hours or even days. The article reviews historical perspectives, anatomical studies, and experimental findings that support this view. It highlights the importance of collateral circulation and the presence of anastomoses between coronary arteries, which can provide alternative blood supply during occlusion. The clinical manifestations of coronary obstruction are described, including sudden death, anginal attacks, and non-fatal cases with mild symptoms. The author presents several case studies to illustrate these points, emphasizing the variability in symptoms and outcomes. The article concludes by discussing the challenges in diagnosing and managing coronary obstruction, and suggests that while sudden death is common, there are instances where patients can survive with proper care.The article discusses the clinical features of sudden obstruction of the coronary arteries, a condition that has long been considered highly fatal. However, the author argues that not all cases of coronary obstruction lead to immediate death, and some patients can survive for several hours or even days. The article reviews historical perspectives, anatomical studies, and experimental findings that support this view. It highlights the importance of collateral circulation and the presence of anastomoses between coronary arteries, which can provide alternative blood supply during occlusion. The clinical manifestations of coronary obstruction are described, including sudden death, anginal attacks, and non-fatal cases with mild symptoms. The author presents several case studies to illustrate these points, emphasizing the variability in symptoms and outcomes. The article concludes by discussing the challenges in diagnosing and managing coronary obstruction, and suggests that while sudden death is common, there are instances where patients can survive with proper care.