| RVA | re-entrant ventricular arrhythmia; right ventricle activation; right vertebral artery |
|---|---|
| TAT | tetanus antitoxin; thematic apperception test; thematic aptitude test; thrombin-antithrombin complex... |
| TBNA | total body neutron activation; treated but not admitted |
| TBNAA | total body neutron activation analysis |
| UAS | upper abdomen surgery; upstream activation site |