Table 2

 Comparison of haemodynamic data at baseline, intervention and recovery in the total cohort (n = 22)

VariableBaselineInterventionRecovery
AVA, aortic valve area; BP, blood pressure; ELCo, energy loss coefficient; % LVSW loss, percentage left ventricular stroke work loss index; ΔPmean, mean transvalvular pressure gradient; Qmean, mean transvalvular flow rate; SAC, systemic arterial compliance; SVR, systemic vascular resistance.
Values in parentheses are the SD.
*p<0.05 vs baseline.
†p<0.001 vs baseline.
Haemodynamic variables
    Heart rate (bpm)62 (8)67 (12)*62 (13)
    Systolic BP (mm Hg)143 (14)181 (20)†136 (15)*
    Diastolic BP (mm Hg)77 (9)92 (8)†75 (8)
    Mean BP (mm Hg)99 (8)121 (10)†96 (7)*
    Stroke volume (ml)104 (19)100 (22)103 (19)
    Qmean (ml/s)323 (67)306 (66)*324 (65)
    Cardiac output (l/min)6.34 (1.31)6.55 (1.51)6.16 (1.22)
    SAC (ml/mm Hg)1.66 (0.47)1.16 (0.31)†1.82 (0.60)*
    SVR (dyne×s/cm5)1294 (264)1552 (372)†1280 (233)
Stenotic indices
    ΔPmean (mm Hg)36 (13)36 (14)35 (14)
    AVA (cm2)1.15 (0.32)1.09 (0.33)*1.17 (0.33)
    Resistance (dyne×s/cm5)153 (63)164 (74)*146 (62)
    % LVSW loss (%)19.8 (6.3)16.5 (5.7)†20.0 (7.1)
    ELCo (cm2)1.32 (0.40)1.24 (0.42)*1.34 (0.43)
Change from baseline
    Qmean (ml/s)–17 (31)1 (31)
    ΔPmean (mm Hg)0 (3)–1 (3)
    AVA (cm2)–0.06 (0.11)0.02 (0.11)
    Resistance (dyne×s/cm5)11 (21)–7 (26)
    % LVSW loss (%)–3.3 (1.7)0.2 (2.3)
    ELCo (cm2)–0.08 (0.17)0.02 (0.16)