coronary sinus वाक्य
उदाहरण वाक्य
मोबाइल
- It then curves to the left in the coronary sulcus, and reaching the back of the heart, opens into the left extremity of the coronary sinus, draining from the myocardium.
- Clevidipine is a dihydropyridine L-type calcium channel blocker, highly selective for lactate production in coronary sinus blood has been seen, confirming the absence of myocardial ischemia due to coronary steal.
- The valve of the coronary sinus is on the posterior, inferior surface of the heart, medial to the inferior vena cava opening, just superior to the septal leaflet of the tricuspid valve.
- Mohl invented Pressure-controlled intermittent coronary sinus occlusion ( also known as PICSO ), a procedure utilized to enhance restoration of blood flow to the microcirculation in heart tissue following a myocardial infarction.
- Since blood moves from areas of high pressure to areas of low pressure, when the chambers are relaxed, blood will flow into the atria ( through the coronary sinus and the pulmonary veins ).
- Thebesian veins have been successfully identified by following the route of contrast flow-during catheterization procedures-from the subendocardium, through the thebesian veins, into larger veins, and into the coronary sinus.
- The left portion shrinks in size and eventually forms the coronary sinus ( right atrium ) and oblique vein of the left atrium, whereas the right part becomes incorporated into the right atrium to form the sinus venarum.
- The cause of the arrhythmia, the ectopic focus, is usually near the AV node in the triangle of Koch ( a rough triangle with points at the coronary sinus, the tendon of Todaro, and the tricuspid valve ).
- In summary, it would appear that placing the following lesions can cure most patients with atrial fibrillation of either type : pulmonary vein encircling incision, left atrial isthmus lesion with its attendant coronary sinus lesion, and the right atrial isthmus lesion.
- The assumption that a low mixed venous oxygen saturation ( normal = 60 % except for the coronary sinus where it approximates 40 % reflecting the high metabolic rate of the myocardium ) represents less than adequate oxygen delivery is consistent with physiological and metabolic observations.
- CRT devices have at least two leads, one passing through the " vena cava " and the right atrium into the right ventricle to stimulate the septum, and another passing through the " vena cava " and the right atrium and inserted through the coronary sinus to pace the epicardial wall of the left ventricle.
- Besides Bachmann's bundle, the other three conduction tracts that constitute the " atrial conduction system " are known as the anterior, middle, and posterior tracts, which run from the sinoatrial node to the atrioventricular node, converging in the region near the coronary sinus . " Atrial automaticity foci " are within the atrial conduction system.
- There are four variants : Supracardiac ( 50 % ) : blood drains to one of the innominate veins ( brachiocephalic veins ) or the superior vena cava; Cardiac ( 20 % ), where blood drains into coronary sinus or directly into right atrium; Infradiaphragmatic ( 20 % ), where blood drains into portal or hepatic veins; and a mixed ( 10 % ) variant.
- It is formed by the folding of the serous layer over the remnant of the lower part of the left superior vena cava ( duct of Cuvier ), which becomes obliterated during fetal life, and remains as a fibrous band stretching from the highest left intercostal vein to the left atrium, where it is continuous with a small cardiac vein, the vein of the left atrium ( oblique vein of Marshall ), which opens into the coronary sinus.
- It may appear similar to a diaphragm or be funnel-shaped, bandlike, entirely intact ( imperforate ) or contain one or more openings ( fenestrations ) ranging from small, restrictive-type to large and widely open . In the pediatric population, this anomaly may be associated with major congenital cardiac lesions such as tetralogy of Fallot, double outlet right ventricle, coarctation of the aorta, partial anomalous pulmonary venous connection, persistent left superior vena cava with unroofed coronary sinus, ventricular septal defect, atrioventricular septal ( endocardial cushion ) defect, and common atrioventricular canal.
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