| PR | by way of the rectum [Lat. per rectum]; far point [of accommodation] [Lat. punctum remotum]; palindr... |
|---|---|
| CAO | chronic airway obstruction; coronary artery obstruction |
| SAO | small airway obstruction; splanchnic artery occlusion; subvalvular aortic obstruction |
| PaO2 | partial oxygen tension in arterial blood; partial pressure of oxygen in arterial blood |
| PH | parathyroid hormone; partial hepatectomy; partial hysterectomy; passive hemagglutination; past histo... |