ME AV LAX
The ME AV LAX view (120-140°) is obtained by withdrawing the probe slightly from the ME LAX view. The aortic valve is now centered in the middle of the screen. The multiplane angle is kept at between 120-140. This view is useful for evaluation of the MV, LVOT, AV and proximal ascending aorta. The LVOT and aortic root measurements can be obtained here. The right coronary cusp (RCC) is seen in the farfield whilst the non-coronary cusp (NCC) or left coronary cusp (LCC) is seen in the near field.
Structures & Chambers
- LA
- LV – Anterior septal & Inferolateral walls
- MV – P2 A2 scallops
- LVOT
- RVOT
- AV – RCC & NCC/LCC
- Right coronary artery ostium
- Proximal Asc Ao
- Coronary sinus
- Pericardium
Sketches of the aortic valve (AV) and aortic root in a central long-axis view: long-axis (LAX) (A) and transesophageal short-axis (SAX) view (B) as well as a three-dimensional (3D) sketch of the aortic root (C) illustrating normal aortic complex anatomy. Three-dimensional transesophageal echocardiographic illustrations of the aortic valve and aortic root complex during systole (D, SAX; E, LAX) and diastole (F, SAX; G, LAX) (see Videos 1 [SAX] and 2 [LAX]). The nomenclature of the distance parameters and characteristic structures are labeled by white arrows. LCA = left coronary artery; LCC = left coronary cusp; LVOT = left ventricular outflow tract; NCC = noncoronary cusp; RCA = right coronary artery; RCC = right coronary cusp; ST = sinotubular; TAA = tubular ascending aorta; VA = ventricular-aortic
Futher Reading:
Hagendorrf et al. Improvement in the Assessment of Aortic Valve and Aortic Aneurysm Repair by 3-Dimensional Echocardiography. JACC 2019