| PAOP | pulmonary artery occlusion pressure |
|---|---|
| PICSO | pressure-controlled intermittent coronary sinus occlusion |
| SAO | small airway obstruction; splanchnic artery occlusion; subvalvular aortic obstruction |
| SMAO | superior mesenteric artery occlusion |
| UICAO | unilateral internal carotid artery occlusion |