| PR | by way of the rectum [Lat. per rectum]; far point [of accommodation] [Lat. punctum remotum]; palindr... |
|---|---|
| HA | H antigen; Hakim-Adams [syndrome]; halothane anesthesia; Hartley [guinea pig]; headache; health alli... |
| HS | Haber syndrome; half strength; hamstring; hand surgery; Hartmann solution; head sling; healthy subje... |
| OH | hydroxycorticosteroid; obstructive hypopnea; occipital horn; occupational health; occupational histo... |
| PaO2 | partial oxygen tension in arterial blood; partial pressure of oxygen in arterial blood |