A 56 year old man was admitted to our center for further evaluation of typical chest pain of ten months' duration. Selective coronary angiography was done and showed a sewing needle-like foreign body which was lying in very close proximity to the anatomic location of the right coronary artery. At operation two pieces of sewing needles were removed, one from the coronary sinus and the other...

Systemic and coronary hemodynamics were assessed before and during a reduction in carotid transmural pressure. This reduction was induced by means of a pneumatic neck chamber in 15 normal subjects and 15 hypertensive patients with a normal coronary arteriogram. A reduced baroreflex responsiveness was demonstrated in hypertensive patients as compared with normal subjects by evaluating both the r...

A 26-year-old man had been diagnosed with a cardiac murmur from birth. In 1998, he was admitted to hospital because of slight fatigue. A grade 5/6 continuous murmur was audible near the right sternal border at the second intercostal space. Doppler echocardiography detected an abnormal flow that suggested that an aneurysm of the right coronary sinus of Valsalva had ruptured into the right ventri...

• The development of catheterization and indicator dilution techniques has made it possible to measure the volume of circulating blood within many organs in the intact animal. Hirche and Lochner injected measured amounts of dye into the coronary arteries of dogs and recorded the subsequent time course of dye concentration in blood from the coronary sinus. From this single curve both coronary bl...

OBJECTIVE Introduction and measurement of human myocardial oxygen supply:demand ratio as a reference for quantification of coronary microvascular vasodilating drug effects in clinical studies. Myocardial oxygen consumption is the major determinant of coronary blood flow; therefore, the true vasodilating properties of coronary vasodilating drugs that may have an effect on oxygen consumption cann...

a large eddy, or vortex, that spins within the sinus cavity. The fluid motion within similar recirculating flows is known to be unstable with an early transition to turbulence. The stability of the aortic sinus vortex was examined in the current study in an in vitro pulsatile flow rig. The geometry of the experimental test section was the same as the geometry of the natural aortic root. Differe...

Aim: To study the anatomy of the coronary venous system in cadaveric hearts, to ascertain various morphological features of the coronary sinus in order to compare male and female coronary sinus.In addition to provide anatomical basis for the cannulation of coronary sinus and its tributaries. Methods; The study was performed on 40 hearts from embalmed cadavers in different age group varies from ...

The selective administration of dopamine, norepinephrine, epinephrine and isoproterenol, into the coronary sinus region of the dog heart produced so-called coronary sinus rhythm, indicating the appearance of deep inverted P waves and frequently accompanied by an acceleration of pacemaker activity of the coronary sinus region. These effects of catecholamines were not influenced by atropine and t...

CARDIAC resynchronization therapy with the placement of a left ventricular pacing electrode in the coronary sinus has been shown to be an effective treatment in selected patients with symptomatic left ventricular dysfunction. Coronary sinus leads can be removed with relative ease because of their small diameter and relatively poor fixation mechanisms. However, removal of coronary sinus electrod...