A diverticulum of the right atrium was found on the floor of the coronary sinus in a neonate. The diverticulum was distinguished from a pericardial cyst by contrast echocardiography, and its relations with coronary sinus and coronary venous return were identified by coronary angiography. Because the diverticulum compressed the left ventricular inferior wall and prevented its growth, it was exci...

The hemodynamic and myocardial metabolic responses to the cold pressor test were studied in 15 patients with coronary artery disease and stable exertional angina. Every patient had abnormal coronary vasoconstriction during a control cold pressor test, even though 14 were receiving propranolol and 12 were receiving long-acting nitrates. Mean coronary vascular resistance for the group increased 1...

The hemodynamic and myocardial metabolic responses to the cold pressor test were studied in 15 patients with coronary artery disease and stable exertional angina. Every patient had abnormal coronary vasoconstriction during a control cold pressor test, even though 14 were receiving propranolol and 12 were receiving long-acting nitrates. Mean coronary vascular resistance for the group increased 1...

A 32 year old female patient presented to the cardiology clinic with an atypical chest pain. Her history revealed no other condition than Leopard syndrome which was diagnosed on her birth. On her coronary CT angiography, LMCA originated from the right coronary sinus and had a prepulmonic course. The purpose of this article is to present this patient with Leopard syndrome accompanied by left cor...

The secretion of atrial natriuretic peptide by the heart is not simply the arterial-coronary sinus concentration difference times coronary blood flow, because only a small fraction of total coronary blood flow passes through the atria. We measured coronary sinus and arterial plasma atrial natriuretic factor (ANF) concentrations and blood flow to each part of the heart using the radioactive micr...

A coronary artery that arises from the nonfacing (posterior or dorsal) aortic sinus is regarded as having an anomalous origin. We studied 34 Syrian hamsters in which the left coronary artery originated from the nonfacing aortic sinus. All hamsters belonged to a single family subjected to high endogamous pressure in our laboratory. Twenty-four specimens were examined using a corrosion-cast techn...

Background. The coronary venous system is an increasingly frequent target of minimally invasive cardiac procedures. The purpose of this paper is to assess the anatomical barriers in the right atrium to coronary sinus cannulation. Methods. We examined the anatomy of the right atrium, coronary sinus ostium, inferior and superior vena cava ostia in 110 randomly selected autopsied human hearts of b...

Smoking high-nicotine cigarettes caused a significant increase in systolic and diastolic arterial pressure, heart rate, left ventricular end-diastolic pressure, and coronary sinus, arterial, and venous CO levels, no significant change in left ventricular dp/dt, aortic systolic ejection period, and cardiac index, and a significant decrease in stroke index and coronary sinus, arterial, and venous...

introduction: iatrogenic aortocoronary dissection (acd) is a nightmare in interventional cardiology. although acd is rarely reported, the real-world prevalence is suspected of being higher due to unreported cases. the right coronary artery (rca) ostium is involved in the majority of cases, and dissections are usually limited to the aortic sinus in half of the clinical presentations. there are d...