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. 2021 Mar 8;8:603319. doi: 10.3389/fcvm.2021.603319

Table 2.

Associations between pulse pressures and cardiac output with parameters of iK in the linear and rotational dimensions.

LV PP (mmHg) Ao PP (mmHg) Fem PP (mmHg) PA PP (mmHg) CO (L/min)
Coefficient 95% CI p-value Coefficient 95% CI p-value Coefficient 95% CI p-value Coefficient 95% CI p-value Coefficient 95% CI p-value
SCG Lin CC (μJ·s) 0.14 0.07; 0.2 <0.0001 0.06 0.03; 0.09 <0.001 0.09 0.02; 0.15 0.01 0.002 −0.001; 0.005 0.29 8.1 3.0; 13.2 0.002
SCG Lin Sys (μJ·s) 0.02 0.08; 0.3 <0.0001 0.08 0.04; 0.11 <0.001 0.12 0.03; 0.19 0.005 0.002 −0.001; 0.006 0.16 11.7 5.6; 17.8 <0.0001
SCG Lin Dia (μJ·s) 0.2 0.02; 0.37 0.03 0.05 −0.04; 0.14 0.26 0.04 −0.14; 0.22 0.65 −0.001 −0.009; 0.007 0.78 2.2 −11.2; 15.6 0.75
SCG rot CC (nJ·s) 4.40 2.08; 6.72 <0.0001 1.49 0.4; 2.60 0.008 2.28 0.02; 4.53 0.05 0.06 −0.35; 15.2 0.22 2.5 0.8; 42.0 0.004
SCG Rot Sys (nJ·s) 5.56 2.89; 8.22 <0.0001 2.16 0.9; 3.37 0.001 3.32 0.7; 5.89 0.01 0.08 −0.03; 0.18 0.14 3.5 1.5; 5.4 <0.0001
SCG Rot Dia (nJ·s) 6.10 −3.03; 15.2 0.19 −3.36 −8.32; 1.60 0.18 −3.35 −13.3; 6.63 0.51 −0.08 −0.5; 0.36 0.72 −0.7 −7.8; 6.2 0.83

iK SCG Lin-Rot, integral of kinetic energy of seismocardiography in the linear and rotational dimension, respectively; CC–Sys–Dia, cardiac cycle–systolic phase–diastolic phase; LV PP, left ventricle pulse pressure; Ao PP, aortic pulse pressure; Fem PP, femoral pulse pressure; PA PP, pulmonary artery pulse pressure.