| CAVO | common atrioventricular orifice |
|---|---|
| EOA | effective orifice area; erosive osteoarthritis; esophageal obturator airway; examination, opinion, a... |
| LUO | left ureteral orifice |
| MVO | maximum venous outflow; mitral valve opening or orifice |
| MVOA | mitral valve orifice area |