• Sheila M Manemann, Alanna M Chamberlain, Véronique L Roger, Cynthia Boyd, Andrea Cheville, Shannon M Dunlay, Susan A Weston, Ruoxiang Jiang, and Rutten Lila J Finney LJF Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota..
• Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota.
• J Am Geriatr Soc. 2018 Jul 1; 66 (6): 1101-1107.

ObjectivesTo characterize the individual and combined effects of multimorbidity and functional limitation on healthcare use and mortality in a large, community cohort of individuals with heart failure (HF).DesignProspective cohort study.SettingEleven southeastern Minnesota counties.ParticipantsIndividuals (mean age 74, 54% male) with a first-ever HF code (International Classification of Diseases, Ninth Revision code 428 or Tenth Revision code I50) between January 1, 2013 and March 31, 2016 (N=2,692).MeasurementsEight activities of daily living measured using a survey on a Likert scale (1=without any difficulty, 5=unable to do; median=8). Participants with a score greater than 8 were categorized as having functional limitation. Multimorbidity was defined as having 2 or more noncardiac comorbidities.ResultsTwenty-five percent of participants had neither multimorbidity nor functional limitation, 35% had multimorbidity, 9% had functional limitation, and 31% had both. After adjustment, participants with multimorbidity and functional limitation had greater risks of all outcomes (death: hazard ratio (HR)=4.92, 95% confidence interval (CI)=3.03-8.00; emergency department (ED) visit: HR=3.67, 95% CI=2.94-4.59; hospitalization: HR=3.66, 95% CI=2.85-4.70; outpatient visit: HR=1.73, 95% CI=1.52-1.96) than those with neither. Participants with functional limitation alone had greater risks of death (HR=4.84, 95% CI=2.78-8.43), ED visits (HR=2.35, 95% CI=1.75-3.16), and hospitalizations (HR=2.10, 95% CI=1.52-2.88) but not outpatient visits. Those with multimorbidity alone had similar risks of ED visits and hospitalizations as those with functional limitation alone but were more likely to have outpatient visits (HR=1.50, 95% CI=1.34-1.67).ConclusionIndividuals with both multimorbidity and functional limitation have the highest risk of death and healthcare use. Individuals with only functional limitation have similar rates of hospitalizations and ED visits as those with only multimorbidity, underscoring the need to consider both when managing individuals with HF.© 2018, Copyright the Authors Journal compilation © 2018, The American Geriatrics Society.

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