Tachypnea is fast breathing.

Machine Briefs:
Option #1: tachypnea= TA/KIP/NAOE/A*
Option #2: tachypnea= TA/KIP/NAOE/YA*
Option #3: tachypnea= TAK/IP/NAOE/A*
Option #4: tachypnea= TAK/IP/NAOE/YA*
NOTE: The above options are based on the proper pronunciation. The below options are based on how someone may misread the word.
Option #5: tachypnea= TAK/YI/PAOE/NAOE/Y*A
Option #6: tachypnea= TAK/YI/PAOE/NAOE/*A