| SVRI | systemic vascular resistance index |
|---|---|
| TFR | total fertility rate; total flow resistance; transferrin receptor |
| THR | targeted heart rate; threonine; thyroid hormone receptor; total hip replacement; transhepatic resist... |
| TPRI | total peripheral resistance index |
| TR | recovery time; rectal temperature; repetition time; residual tuberculin; terminal repeat; tetrazoliu... |