Coronary anatomy: Difference between revisions
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The two main coronary trunks lie in two perpendicular planes (Fig 1); The Right Coronary Artery (RCA) and Left Circumflex Artery (LCX) run in the atrioventricular groove. The Left Anterior Descending (LAD) or Ramus Descendens Anterior (RDA) and Right Posterior Descending (RDP) run in the interventricular groove in de plane of the interventricular septum. In the standard Right Anterior Oblique (RAO) 30 we are looking down the plane of the AV-valves and have the LAD and the IVS running form left to right on the screen (Fig 2). In the Left Anterior Oblique 45 (LAO) projection we will be looking directly onto the AV-plane. | The two main coronary trunks lie in two perpendicular planes (Fig 1); The Right Coronary Artery (RCA) and Left Circumflex Artery (LCX) run in the atrioventricular groove. The Left Anterior Descending (LAD) or Ramus Descendens Anterior (RDA) and Right Posterior Descending (RDP) run in the interventricular groove in de plane of the interventricular septum. In the standard Right Anterior Oblique (RAO) 30 we are looking down the plane of the AV-valves and have the LAD and the IVS running form left to right on the screen (Fig 2). In the Left Anterior Oblique 45 (LAO) projection we will be looking directly onto the AV-plane. | ||
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[[File:699px-Heart_left_anterior_oblique_diagrams.svg.png|thumb|none|500px|Left anterior oblique view of the coronary arteries]] | |||
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The LCX follows the posterior AV-groove giving rise to obtuse marginal branches supplying the posterolateral wall op the heart. As described before in some cases the LCX also supplies the sinus node via a left atrial branch. In left dominant circulation the circumflex supplies the inferior interventricular septum via a descendens posterior artery. | The LCX follows the posterior AV-groove giving rise to obtuse marginal branches supplying the posterolateral wall op the heart. As described before in some cases the LCX also supplies the sinus node via a left atrial branch. In left dominant circulation the circumflex supplies the inferior interventricular septum via a descendens posterior artery. | ||
[[File:Coronary_anatomy_AHA.svg|thumb|none|500px| Coronary anatomy with AHA classification <cite>AHA</cite>]] | |||
* [[Left ventriculogram]] | * [[Left ventriculogram]] | ||