Misty A W Hawkins1, John Gunstad2, Mary A Dolansky3, Joseph D Redle4, Richard Josephson5, Shirley M Moore3, Joel W Hughes6. 1. Department of Psychology, Kent State University, Kent, Ohio. Electronic address: mhawki15@kent.edu. 2. Department of Psychology, Kent State University, Kent, Ohio. 3. School of Nursing, Case Western Reserve University, Cleveland, Ohio. 4. Department of Psychiatry, Summa Health System, Akron City Hospital, Akron, Ohio. 5. School of Medicine, Case Western Reserve University, Cleveland, Ohio; Harrington Heart & Vascular Institute, University Hospitals, Cleveland, Ohio. 6. Department of Psychology, Kent State University, Kent, Ohio; Department of Psychiatry, Summa Health System, Akron City Hospital, Akron, Ohio.
Abstract
BACKGROUND: Heart failure (HF) and obesity are associated with cognitive impairment. However, few studies have investigated the relationship between adiposity and cognitive functioning in HF for each sex, despite observed sex differences in HF prognosis. We tested the hypothesis that greater body mass index (BMI) would be associated with poorer cognitive functioning, especially in men, in sex-stratified analyses. METHODS AND RESULTS: Participants were 231 HF patients (34% female, 24% nonwhite, average age 68.7 ± 7.3 years). Height and weight were used to compute BMI. A neuropsychology battery tested global cognitive function, memory, attention, and executive function. Composites were created using averages of age-adjusted scaled scores. Regressions adjusting for demographic and medical factors were conducted. The sample was predominantly overweight/obese (76.2%). For men, greater BMI predicted poorer attention (ΔR(2) = 0.03; β = -0.18; P = .01) and executive function (ΔR(2) = 0.02; β = -0.13; P = .04); these effects were largely driven by men with severe obesity (BMI ≥40 kg/m(2)). BMI did not predict memory (P = .69) or global cognitive functioning (P = .08). In women, greater BMI was not associated with any cognitive variable (all P ≥ .09). DISCUSSION: Higher BMI was associated with poorer attention and executive function in male HF patients, especially those with severe obesity. These patients may therefore have more difficulties with the HF treatment regimen and may have poorer outcomes.
BACKGROUND:Heart failure (HF) and obesity are associated with cognitive impairment. However, few studies have investigated the relationship between adiposity and cognitive functioning in HF for each sex, despite observed sex differences in HF prognosis. We tested the hypothesis that greater body mass index (BMI) would be associated with poorer cognitive functioning, especially in men, in sex-stratified analyses. METHODS AND RESULTS:Participants were 231 HF patients (34% female, 24% nonwhite, average age 68.7 ± 7.3 years). Height and weight were used to compute BMI. A neuropsychology battery tested global cognitive function, memory, attention, and executive function. Composites were created using averages of age-adjusted scaled scores. Regressions adjusting for demographic and medical factors were conducted. The sample was predominantly overweight/obese (76.2%). For men, greater BMI predicted poorer attention (ΔR(2) = 0.03; β = -0.18; P = .01) and executive function (ΔR(2) = 0.02; β = -0.13; P = .04); these effects were largely driven by men with severe obesity (BMI ≥40 kg/m(2)). BMI did not predict memory (P = .69) or global cognitive functioning (P = .08). In women, greater BMI was not associated with any cognitive variable (all P ≥ .09). DISCUSSION: Higher BMI was associated with poorer attention and executive function in male HF patients, especially those with severe obesity. These patients may therefore have more difficulties with the HF treatment regimen and may have poorer outcomes.
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Authors: Mary A Dolansky; Misty A W Hawkins; Julie T Schaefer; John Gunstad; Abdus Sattar; Joseph D Redle; Anton Vehovec; Richard Josephson; Shirley M Moore; Joel W Hughes Journal: J Cardiovasc Nurs Date: 2017 Nov/Dec Impact factor: 2.083
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