| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
|---|---|
| SjO2 | jugular bulb venous oxygen saturation |
| SjVO2 | jugular venous oxygen saturation |
| SO2 | oxygen saturation |
| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |