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March 08, 2022; 98 (10) Research Article

Twenty-Five–Year Change in Cardiac Structure and Function and Midlife Cognition

The CARDIA Study

Laure Rouch, Tina Hoang, Feng Xia, Stephen Sidney, Joao A.C. Lima, Kristine Yaffe
First published January 26, 2022, DOI: https://doi.org/10.1212/WNL.0000000000013249
Laure Rouch
From the Departments of Psychiatry (L.R., K.Y.), Neurology (K.Y.), and Epidemiology (K.Y.), University of California, San Francisco; Northern California Institute for Research and Education (T.H., F.X.), San Francisco; Kaiser Permanente Northern California (S.S.), Division of Research, Oakland; Johns Hopkins University School of Medicine (J.A.C.L.), Baltimore, MD; and San Francisco VA Medical Center (K.Y.), CA.
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Tina Hoang
From the Departments of Psychiatry (L.R., K.Y.), Neurology (K.Y.), and Epidemiology (K.Y.), University of California, San Francisco; Northern California Institute for Research and Education (T.H., F.X.), San Francisco; Kaiser Permanente Northern California (S.S.), Division of Research, Oakland; Johns Hopkins University School of Medicine (J.A.C.L.), Baltimore, MD; and San Francisco VA Medical Center (K.Y.), CA.
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Feng Xia
From the Departments of Psychiatry (L.R., K.Y.), Neurology (K.Y.), and Epidemiology (K.Y.), University of California, San Francisco; Northern California Institute for Research and Education (T.H., F.X.), San Francisco; Kaiser Permanente Northern California (S.S.), Division of Research, Oakland; Johns Hopkins University School of Medicine (J.A.C.L.), Baltimore, MD; and San Francisco VA Medical Center (K.Y.), CA.
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Stephen Sidney
From the Departments of Psychiatry (L.R., K.Y.), Neurology (K.Y.), and Epidemiology (K.Y.), University of California, San Francisco; Northern California Institute for Research and Education (T.H., F.X.), San Francisco; Kaiser Permanente Northern California (S.S.), Division of Research, Oakland; Johns Hopkins University School of Medicine (J.A.C.L.), Baltimore, MD; and San Francisco VA Medical Center (K.Y.), CA.
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Joao A.C. Lima
From the Departments of Psychiatry (L.R., K.Y.), Neurology (K.Y.), and Epidemiology (K.Y.), University of California, San Francisco; Northern California Institute for Research and Education (T.H., F.X.), San Francisco; Kaiser Permanente Northern California (S.S.), Division of Research, Oakland; Johns Hopkins University School of Medicine (J.A.C.L.), Baltimore, MD; and San Francisco VA Medical Center (K.Y.), CA.
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Kristine Yaffe
From the Departments of Psychiatry (L.R., K.Y.), Neurology (K.Y.), and Epidemiology (K.Y.), University of California, San Francisco; Northern California Institute for Research and Education (T.H., F.X.), San Francisco; Kaiser Permanente Northern California (S.S.), Division of Research, Oakland; Johns Hopkins University School of Medicine (J.A.C.L.), Baltimore, MD; and San Francisco VA Medical Center (K.Y.), CA.
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Twenty-Five–Year Change in Cardiac Structure and Function and Midlife Cognition
The CARDIA Study
Laure Rouch, Tina Hoang, Feng Xia, Stephen Sidney, Joao A.C. Lima, Kristine Yaffe
Neurology Mar 2022, 98 (10) e1040-e1049; DOI: 10.1212/WNL.0000000000013249

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Abstract

Background and Objective The goal of this work was to determine whether midlife cardiac structure and function and their 25-year change from early to middle adulthood are associated with lower midlife cognition.

Methods We studied 2,653 participants from the Coronary Artery Risk Development in Young Adults (CARDIA) study (57% women, 46% Black). Echocardiograms were obtained at year 5, 25, and 30 visits (participant mean age 30, 50, and 55 years) to assess left ventricular (LV) mass (LVM), LV systolic function with LV ejection fraction (LVEF), and LV diastolic function with left atrial volume (LAV) and early peak mitral velocity (E)/early peak mitral annular velocity (e’) ratio. LVM and LAV were indexed to body surface area (LVMi and LAVi). At year 30, 5 cognitive domains were measured: global cognition, processing speed, executive function, delayed verbal memory, and verbal fluency. We investigated the association between midlife (year 30) and 25-year change in cardiac structure and function on midlife cognition using linear regressions.

Results Over 25 years, LVMi and LAVi increased with mean change (SD) per year of 0.27 (0.28) g/m2 and 0.42 (0.15) mL/m2, while LVEF decreased by 0.11% (0.02%). After adjustment for demographics and education, 25-year increase (≥1 SD) in LVMi was associated with lower cognition on most tests (p ≤ 0.02); 25-year increase in LAVi was associated with lower global cognition (p = 0.04), but 25-year decrease in LVEF was not associated with cognition. Further adjustment for cardiovascular risk factors led to similar results. In addition, unlike year 30 E/e’ ratio and LVEF, higher year 30 LVMi and LAVi were significantly associated with worse cognition on most cognitive tests.

Discussion Midlife cardiac structure and its change from early to middle adulthood are associated with lower midlife cognition even after accounting for confounders. Unlike systolic function, midlife LV diastolic function and its 25-year change were also linked to cognition. Our results provide information linking early to midlife cardiac structure and function to cognition.

Glossary

AFib=
atrial fibrillation;
AV=
arterial-ventricular;
BP=
blood pressure;
CARDIA=
Coronary Artery Risk Development in Young Adults;
CHD=
coronary heart disease;
CHF=
congestive heart failure;
DSST=
Digit Symbol Substitution Test;
LAV=
left atrial volume;
LAVi=
LAV indexed to body surface area;
LV=
left ventricular;
LVEF=
LV ejection fraction;
LVM=
LV mass;
LVMi=
LVM indexed to body surface area;
MESA=
Multi-Ethnic Study of Atherosclerosis;
MoCA=
Montreal Cognitive Assessment;
RAVLT=
Rey Auditory Verbal Learning Test

Footnotes

  • Go to Neurology.org/N for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.

  • Received June 6, 2021.
  • Accepted in final form December 13, 2021.
  • © 2022 American Academy of Neurology
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