http://circoutcomes.ahajournals.org/content/early/2014/11/11/HCQ.0000000000000008.abstract
- Deborah A. Levine, MD, MPH,
- Dimitry S. Davydow, MD, MPH,
- Catherine L. Hough, MD, MSc,
- Kenneth M. Langa, MD, PhD,
- Mary A.M. Rogers, PhD and
- Theodore J. Iwashyna, MD, PhD
+ Author Affiliations
- Correspondence to Deborah A. Levine, MD, MPH, Division of General Medicine, University of Michigan, North Campus Research Complex, 2800 Plymouth Rd, Bldg 16, Room 430W, Ann Arbor, MI 48109. E-mail deblevin@umich.edu
Abstract
Background—We assessed the acute and long-term effect of myocardial infarction (MI) and stroke on postevent functional disability and
cognition while controlling for survivors’ changes in functioning over the years before the event.
Methods and Results—Among
participants in the nationally representative Health and Retirement
Study with linked Medicare data (1998–2010), we
determined within-person changes in
functional limitations (basic and instrumental activities of daily
living) and cognitive
impairment after hospitalization for stroke
(n=432) and MI (n=450), controlling for premorbid functioning using
fixed-effects
regression. In persons without baseline
impairments, an acute MI yielded a mean acute increase of 0.41
functional limitations
(95% confidence interval [CI], 0.18–0.63)
with a linear increase of 0.14 limitations/year in the following decade.
These increases
were 0.65 limitations (95% CI, 0.07–1.23) and
0.27 limitations/year afterward for those with mild-to-moderate
impairment at
baseline. Stroke resulted in an acute
increase of 2.07 (95% CI, 1.51–2.63) limitations because of the acute
event and an increase
of 0.15 limitations/year afterward for those
unimpaired at baseline. There were 2.65 new limitations (95% CI,
1.86–3.44) and
0.19/year afterward for those with baseline
mild-to-moderate impairment. Stroke hospitalization was associated with
greater
odds of moderate-to-severe cognitive
impairment (odds ratio, 3.86; 95% CI, 2.10–7.11) at the time of the
event, after adjustment
for premorbid cognition but MI
hospitalization was not.
Conclusions—In this
population-based cohort, most MI and stroke hospitalizations were
associated with significant increases in functional
disability at the time of the event and in
the decade afterward. Survivors of MI and stroke warrant screening for
functional
disability over the long-term.
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