| TTR | transthoracic resistance; transthyretin; triceps tendon reflex |
|---|---|
| TVR | tonic vibratory reflex; total vascular resistance; tricuspid valve replacement |
| UAR | upper airway resistance; uric acid riboside |
| VR | right arm [electrode]; valve replacement; variable ratio; vascular resistance; venous reflux; venous... |
| ADI | Acute Drug Intoxication |