Table 2 Post-BT changes in cardiopulmonary function assessed at THR during CPET
Pre-BT | 3 months after BT | 1 year after BT | |
|---|---|---|---|
Dyspnea, Borg scale | 7 | 4 | 4 |
HR response, % | 105 | 109 | 103 |
Exercise time, min | 9.6 | 14.5 | 15.5 |
\( {\dot{\text{V}}}_{{{\text{O}}_{ 2} }} \), mL min−1 kg−1 | 26.0 | 25.7 | 25.0 |
\( {\dot{\text{V}}}_{\text{E}} \), L min−1 | 79.4 | 75.4 | 75.3 |
ΔFO2, % | 2.97 | 3.09 | 3.04 |
VTex, mL | 2412 | 2495 | 2559 |
VT in − VTex, mL | 6 | 23 | − 64 |
fR, breaths min−1 | 32.9 | 30.2 | 29.4 |
Ti/Ttot | 0.39 | 0.37 | 0.39 |
VD/VTex | 0.28 | 0.28 | 0.27 |
\( {\dot{\text{V}}}_{\text{E}} /{\dot{\text{V}}}_{{{\text{O}}_{ 2} }} \) | 41 | 41 | 41 |
\( {\dot{\text{V}}}_{\text{E}} /{\dot{\text{V}}}_{{{\text{CO}}_{ 2} }} \) | 38 | 35 | 36 |
SpO2, % | 91 | 96 | 94 |
AT, mL min−1 | 1147 | 1277 | 1230 |