Abstract 16532: Sedentary Time in Hospitalized Older Adults With Acute Cardiovascular Disease

Abstract

Background: Older adults may be subject to prolonged bedrest during hospitalization for acute cardiovascular (CV) disease, which can contribute to poor functional outcomes posthospitalization. Our objective was to describe mobility status in hospitalized older adults with acute CV disease. Methods: Patients aged ≥ 60 years old in the cardiac ICU and CV ward at a tertiary care academic centre in Montreal, Quebec were prospectively enrolled from April 2019 to March 2020. Activity levels were measured with an accelerometer (ActiGraph GT9 Link). Sedentary was defined as lying in bed or in a sitting position. Health-related quality of life (HRQoL) was measured with the Short-Form 36 (SF-36) questionnaire by telephone at 1 month post-hospital discharge. The primary outcome was percentage of sedentary time during hospital stay. Secondary outcomes were step counts, steps per minute, and kcal/day consumption. Results: There were 35 patients included in the analysis (75.7 6.9 years old; 45.7% females; 22.9% ischemic heart disease; 20.0% heart failure). Patients spent 91.2% ± 5.5 in the sedentary position during their hospital stay (range 80.0-100%; Figure ). There was no difference in percentage sedentary time by primary diagnosis or sex. Mean steps per minute were 1.0 ± 1.2 and mean kcals consumed per day were 116.6 ± 124.5. In the multivariable analysis, a lower percentage of sedentary time and lower steps per minute were each associated with lower total SF-36 scores at 1-month posthospitalization (both P<0.05). Conclusion: Older adults with acute CV disease are sedentary for a large part of their hospital stay. Increased sedentary time is associated with worse self-reported posthospital HRQoL. Future studies are needed to determine whether interventions to increase activity during hospitalization improve posthospital HRQoL and functional outcomes.