There are multiple definitions:

1. bridge to transplant(English)

   • , BTC, BTD, BTR, DT, HVAD, IABP, LVAD, MCS, TAH, VAD
   • Transplantation, Cardiology
   • https://doi.org…jtd.2018.04.148

2. butanol threshold testing(English)

   • COT, CRS, MOT, OD, PIOD, PVOD, TDI, URTI
   • Olfactory system
   • https://doi.org….1002/alr.22624

3. Blalock‐Thomas‐Taussig(English)

   • refers to a shunt
   • bPAB, BW, GA, HLHS, MH, NPC-QIC, PAB, PDA, PGE, SH, SS1
   • Cardiology, Surgery, Pediatrics
   • https://doi.org…JAHA.124.040740