ETT1 (n=316) | ETT2 (n=170) | ETT3 (n=106) | ETT4 (n=67) | ETT final (n=42) | Trend | ||
β (95% CI) | P vaules | ||||||
Age, years | |||||||
Moderate AS | 63.7±13.5 | 65.2±12.3 | 65.2±13.0 | 64.3+12.2 | 66.7±12.7 | −0.16 (−0.19 to 0.12) | <0.001 |
Severe AS | 69.3±10.9 | 69.4±11.5 | 69.9±12.9 | 67.8±13.9 | 56.9±13.5 | −0.06 (−0.14 to 0.01) | 0.095 |
Pre-ETT heart rate, bpm | 77±15 | 76±15 | 73±15 | 72±14 | 73±14 | −0.93 (−1.70 to 0.17) | 0.018 |
Pre-ETT SBP, mm Hg | 141±19 | 139±17 | 141±20 | 141±18 | 140±20 | 0.22 (−0.89 to 1.32) | 0.703 |
Pre-ETT DBP, mm Hg | 85±11 | 83±11 | 85±12 | 85±10 | 86±12 | 0.12 (−0.53 to 0.77) | 0.719 |
ETT stage at stopping | 3.0±1.4 | 3.3±1.4 | 3.4±1.4 | 3.4±1.4 | 3.2±1.5 | −0.06 (−0.14 to 0.01) | 0.114 |
Peak heart rate, bpm | 133±25 | 133±28 | 133±30 | 133±27 | 130±24 | −2.12 (−3.21, to 1.03) | <0.001 |
Peak SBP, mm Hg | 167±26 | 163±26 | 164±23 | 165±23 | 158±22 | −1.35 (−2.73 to 0.04) | 0.057 |
Peak DBP, mm Hg | 90±16 | 90±20 | 89±16 | 88±15 | 89±19 | −0.90 (−1.97 to 0.16) | 0.097 |
THR achieved, % | 86±15 | 86±15 | 86±17 | 85±15 | 84±14 | −0.79 (−1.47 to 0.11) | 0.024 |
Post-ETT heart rate, bpm | 84±13 | 86±16 | 83±17 | 82±14 | 80±15 | −1.45 (-2.45 to 0.45) | <0.001 |
Post-ETT SBP, mm Hg | 143±21 | 143±21 | 145±23 | 143±18 | 142±19 | 0.15 (−1.13 to 1.42) | 0.824 |
Post-ETT DBP, mm Hg | 84±13 | 84±12 | 85±12 | 83±16 | 85±13 | −0.14 (−1.07 to 0.79) | 0.763 |
Exercise duration, min | 9.7±4.4 | 11.0±4.2 | 11.8±4.3 | 12.7±3.8 | 12.6±3.2 | 0.25 (0.08 to 0.42) | 0.005 |
METs | 8.6±4.5 | 9.1±3.9 | 9.3±3.9 | 9.6±4.1 | 8.9±3.3 | −0.34 (−0.54 to 0.15) | 0.001 |
AS, aortic stenosis; DBP, diastolic blood pressure; ETT, exercise treadmill test; METs, metabolic equivalents; SBP, systolic blood pressure; THR, target heart rate.