atrioventricular groove

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Related to atrioventricular groove: atrioventricular sulcus

cor·o·nar·y sul·cus

a groove on the outer surface of the heart marking the division between the atria and the ventricles.
Farlex Partner Medical Dictionary © Farlex 2012

atrioventricular groove

A furrow running circumferentially around the heart's surface and separating the atria from the ventricles; it is approximately perpendicular to the interventricular groove The atrioventricular groove is obscured on the anterior (front) surface of the heart by the pulmonary trunk and the aorta as they emerge from the heart. For parts of their courses, the major epicardial blood vessels run in the atrioventricular groove.
Synonym: atrioventricular sulcus, coronary groove, coronary sulcus
See also: groove
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Caption: Figure 5: CT chest showing large hematoma arising from atrioventricular groove, with contrast from coronary angiogram, compressing on left atrium.
Morphologically, in this case, because of the unique location of the pseudoaneurysm involving the atrioventricular groove, a rare possibility of giant coronary aneurysm involving the left circumflex coronary artery could be an important differential diagnostic consideration.
The LCx turns backwards after its origin from the LMCA and runs downwards in the left atrioventricular groove. The proximal portion of the LCx passes under the left atrial auricle that makes the visualization difficult.
(9) Calcium in the atrioventricular groove is said to be nearly pathognomonic of pericardial constriction.
Caption: Figure 4: Top view three-dimensional computed tomography scan showing single left anterior descending artery (arrow) and absence of LCX in the atrioventricular groove (arrow heads).
In these cases, it usually courses inferiorly and posteriorly to the aorta to enter the left atrioventricular groove. Usually, the diagnosis of this congenital anomaly of coronary circulation is established during coronary angiography, and stent implantation generally facilitates an echocardiographic view of the vessel course.
Two types have been described: communication between the Cx and the RCA in the posterior atrioventricular groove, and communication between the LAD and the PDA in the distal atrioventricular groove, In all described cases intercoronary continuity was by means of a single vessel in the epicardial position with a diameter similar to that of the terminal portions of connected arteries.

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