Table 2. Association Between Visit-to-Visit Systolic Blood Pressure Variability and Cardiac Structure and Functiona.
Characteristic | Systolic VIM | Systolic SD | Systolic ARV | |||
---|---|---|---|---|---|---|
Unadjusted β (SE) | Adjusted β (SE) | Unadjusted β (SE) | Adjusted β (SE) | Unadjusted β (SE) | Adjusted β (SE) | |
LVMi | 1.85 (0.5) | 2.66 (0.4) | 5.19 (0.5) | 3.47 (0.5) | 2.67 (0.5) | 2.54 (0.4) |
P value | <.001 | <.001 | <.001 | <.001 | <.001 | <.001 |
LAVi | 0.33 (0.2) | 0.20 (0.2) | 0.78 (0.15) | 0.32 (0.2) | 0.45 (0.2) | 0.24 (0.2) |
P value | .02 | .19 | <.001 | .07 | .004 | .13 |
LVEF | 0.33 (0.1) | 0.14 (0.2) | 0.19 (0.2) | 0.12 (0.2) | 0.07 (0.2) | −0.04 (0.2) |
P value | .03 | .38 | .22 | .51 | .62 | .80 |
GLS | 0.19 (0.1) | 0.17 (0.1) | 0.44 (0.1) | 0.18 (0.1) | 0.32 (0.1) | 0.22 (0.1) |
P value | <.001 | .002 | <.001 | .004 | <.001 | <.001 |
E/é | 0.55 (0.1) | 0.37 (0.1) | 0.70 (0.1) | 0.45 (0.1) | 0.66 (0.1) | 0.52 (0.1) |
P value | <.001 | <.001 | <.001 | <.001 | <.001 | <.001 |
é | −0.51 (0.1) | −0.40 (0.1) | −0.73 (0.1) | −0.47 (0.1) | −0.64 (0.1) | −0.55 (0.1) |
P value | <.001 | <.001 | <.001 | <.001 | <.001 | <.001 |
Abbreviations: ARV, average real variability; é, early peak diastolic mitral annular velocity; E/é, mitral inflow velocity to early diastolic mitral annular velocity; GLS, global longitudinal strain; LAVi, left-atrial volume index; LV, left-ventricular; LVEF, LV ejection fraction; LVMi, LV mass index; VIM, variability independent of the mean.
Dependent variables were LVMi, LAVi, LVEF, GLS, E/é (more positive values represent worse diastolic function), and é (more negative values denote worse LV relaxation). Independent variables were measures of systolic blood pressure variability: VIM, SD, and ARV. β Represents regression coefficient per SD increments in exposures. Models were adjusted for year 25 covariates: age, sex, race, educational level, body mass index, smoking status, physical activity, fasting glucose level, total cholesterol level, high-density lipoprotein cholesterol level, antihypertensive medication use (year 0 to year 25), and mean systolic blood pressure.