Henry E Wang1, Mohammed M Kabeto2, Marquita Gray3, Virginia G Wadley4, Paul Muntner5, Suzanne E Judd3, Monika M Safford6, Jordan Kempker7, Deborah A Levine2. 1. Department of Emergency Medicine, The University of Texas Health Science Center at Houston, Houston, TX. 2. Department of Internal Medicine and Cognitive Health Services Research Program, University of Michigan, Ann Arbor, MI. 3. Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL. 4. Department of Medicine, University of Alabama School of Medicine, Birmingham, AL. 5. Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL. 6. Department of Medicine, Weill-Cornell Medical Center, New York, NY. 7. Department of Medicine, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Emory University, Atlanta, GA.
Abstract
OBJECTIVES: Cognitive impairment is an important consequence of sepsis. We sought to determine long-term trajectories of cognitive function after sepsis. DESIGN: Prospective study of the Reasons for Geographic and Racial Differences in Stroke cohort. SETTING: United States. PATIENTS: Twenty-one thousand eight-hundred twenty-three participants greater than or equal to 45 years, mean (sd) age 64.3 (9.2) years at first cognitive assessment, 30.9% men, and 27.1% Black. MEASUREMENTS AND MAIN RESULTS: The main exposure was time-dependent sepsis hospitalization. The primary outcome was global cognitive function (Six-Item Screener range, 0-6). Secondary outcomes were incident cognitive impairment (Six-Item Screener score ≤ 4 [impaired] vs ≥5 [unimpaired]), new learning (Consortium to Establish a Registry for Alzheimer Disease Word List Learning range, 0-30), verbal memory (word list delayed recall range, 0-10), and executive function/semantic fluency (animal fluency test range, ≥ 30). Over a median follow-up of 10 years (interquartile range, 6-12 yr), 840 (3.8%) experienced sepsis (incidence 282 per 1,000 person-years). Sepsis was associated with faster long-term declines in Six-Item Screener (-0.02 points per year faster [95% CI, -0.01 to -0.03]; p < 0.001) and faster long-term rates of incident cognitive impairment (odds ratio 1.08 per year [95% CI, 1.02-1.15]; p = 0.008) compared with presepsis slopes. Although cognitive function acutely changed after sepsis (0.05 points [95% CI, 0.01-0.09]; p = 0.01), the odds of acute cognitive impairment (Six-Item Screener ≤ 4) immediately after sepsis was not significant (odds ratio, 0.81 [95% CI, 0.63-1.06]; p = 0.12). Sepsis hospitalization was not associated with acute changes or faster declines in word list learning, word list delayed recall, or animal fluency test. CONCLUSIONS: Sepsis is associated with accelerated long-term decline in global cognitive function.
OBJECTIVES: Cognitive impairment is an important consequence of sepsis. We sought to determine long-term trajectories of cognitive function after sepsis. DESIGN: Prospective study of the Reasons for Geographic and Racial Differences in Stroke cohort. SETTING: United States. PATIENTS: Twenty-one thousand eight-hundred twenty-three participants greater than or equal to 45 years, mean (sd) age 64.3 (9.2) years at first cognitive assessment, 30.9% men, and 27.1% Black. MEASUREMENTS AND MAIN RESULTS: The main exposure was time-dependent sepsis hospitalization. The primary outcome was global cognitive function (Six-Item Screener range, 0-6). Secondary outcomes were incident cognitive impairment (Six-Item Screener score ≤ 4 [impaired] vs ≥5 [unimpaired]), new learning (Consortium to Establish a Registry for Alzheimer Disease Word List Learning range, 0-30), verbal memory (word list delayed recall range, 0-10), and executive function/semantic fluency (animal fluency test range, ≥ 30). Over a median follow-up of 10 years (interquartile range, 6-12 yr), 840 (3.8%) experienced sepsis (incidence 282 per 1,000 person-years). Sepsis was associated with faster long-term declines in Six-Item Screener (-0.02 points per year faster [95% CI, -0.01 to -0.03]; p < 0.001) and faster long-term rates of incident cognitive impairment (odds ratio 1.08 per year [95% CI, 1.02-1.15]; p = 0.008) compared with presepsis slopes. Although cognitive function acutely changed after sepsis (0.05 points [95% CI, 0.01-0.09]; p = 0.01), the odds of acute cognitive impairment (Six-Item Screener ≤ 4) immediately after sepsis was not significant (odds ratio, 0.81 [95% CI, 0.63-1.06]; p = 0.12). Sepsis hospitalization was not associated with acute changes or faster declines in word list learning, word list delayed recall, or animal fluency test. CONCLUSIONS: Sepsis is associated with accelerated long-term decline in global cognitive function.
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