| PS | pacemaker syndrome; paired stimulation; paradoxical sleep; paraspinal; parasympathetic; Parkinson sy... |
|---|---|
| PR | by way of the rectum [Lat. per rectum]; far point [of accommodation] [Lat. punctum remotum]; palindr... |
| SPS | scapuloperoneal syndrome; shoulder pain and stiffness; simple partial seizures; slow-progressive sch... |
| FSI | foam stability index; Food Sanitation Institute; functional status index; function status index |
| PaO2 | partial oxygen tension in arterial blood; partial pressure of oxygen in arterial blood |