| AOO | anodal opening odor; atrial asynchronous (competitive, fixed-rate) [pacemaker] |
|---|---|
| AOP | anodal opening picture; aortic pressure |
| AOS | American Ophthalmological Society; American Otological Society; anodal opening sound; anterior [o]es... |
| AOT | accessory optic tract; Anderson Olsson table; anodal opening tetanus; Association of Occupational Th... |
| AOTe | anodal opening tetanus |
| coronary node | The uppermost part of the atrioventricular node. (05 Mar 2000) |
|---|---|
| coronary occlusion | Blockage of a coronary vessel, usually by thrombosis or atheroma, often leading to myocardial infarction. (05 Mar 2000) |
| coronary ostial stenosis | Narrowing of the mouths of the coronary arteries as a result of syphilitic aortitis or atherosclerosis. (05 Mar 2000) |
| coronary perfusion pressure | The pressure at which blood proceeds through the coronary circulation, mainly in diastole. (05 Mar 2000) |
| coronary plexus | The continuation of the cardiac plexus onto the coronary arteries. Synonym: plexus coronarius cordis. (05 Mar 2000) |
| coronary-prone behaviour | The behaviour that characterises type A personality pattern. (05 Mar 2000) |
| coronary steal | A steal caused by anomalous origin of the coronary artery from the pulmonary artery. (05 Mar 2000) |
| coronary sulcus | A groove on the outer surface of the heart marking the division between the atria and the ventricles. Synonym: sulcus coronarius, atrioventricular groove, atrioventricular sulcus, auriculoventricular groove, coronary sulcus. (05 Mar 2000) |
| coronary tendon | One of four fibrous rings that surround atrioventricular and arterial orifices of the heart, providing attachment for the valve leaflets and maintaining patency of the orifice. As part of the fibrous skeleton of the heart, the fibrous rings also provide origin and insertion for the myocardium. Synonym: annulus fibrosus cordis, annulus fibrosus, coronary tendon, fibrous ring, Lower's ring. (05 Mar 2000) |
| coronary thrombosis | A blood clot in the lumen of a coronary artery. This is the mechanism by which a myocardial infarction results. A thrombus forms when microscopic cracks (from the effects of atherosclerosis) occur in the coronary vessel wall. These tiny cracks expose collagen, thus triggering platelets to adhere to the site and a blood clot to form. (27 Sep 1997) |
| coronary valve | A delicate fold of endocardium at the opening of the coronary sinus into the right atrium. Synonym: valvula sinus coronarii, coronary valve, thebesian valve. (05 Mar 2000) |
| coronary vasospasm | Spasm of the large- or medium-sized coronary arteries. (12 Dec 1998) |
| coronary vein | <anatomy, vein> Arises from a union of veins from both surfaces of the cardia of the stomach and an oesophageal tributary from the cardiac portion of the oesophagus; it runs in the lesser omentum and empties into the portal vein. See: oesophageal veins. Synonym: vena gastrica sinistra, coronary vein, vena coronaria ventriculi. (05 Mar 2000) |
| coronary vessel anomalies | Defects of coronary arteries or veins including anomalous origin, arteriovenous fistula or aneurysm, myocardial bridging, or other abnormalities of structure or development. (12 Dec 1998) |
| coronary vessels | The veins and arteries of the heart. (12 Dec 1998) |