Coronary sinus diameter to inferior vena cava diameter ratio in the diagnosis of cardiac tamponade: a novel approach

Background and aim Coronary sinus (CS) as an intrapericardial, low-pressure, thin-walled structure can be easily compressed in cardiac tamponade. Whereas, inferior vena cava (IVC) is an extrapericardial structure which dilates in tamponade as opposed to the response of CS. The inverse relationship between these two venous structures may augment their role in the evaluation of tamponade imaging. Therefore, we assessed the usefullness of...