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Mild cognitive impairment and receipt of procedures for acute ischemic stroke in older adults.

Levine DA, Galecki A, Kabeto M, Nallamothu BK, Zahuranec DB, Morgenstern LB, Lisabeth LD, Giordani B, Langa KM. Mild cognitive impairment and receipt of procedures for acute ischemic stroke in older adults. Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association. 2020 Oct 1; 29(10):105083.

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Abstract:

BACKGROUND AND PURPOSE: Older patients with pre-existing mild cognitive impairment (MCI) receive less evidence-based care after acute myocardial infarction, however, whether they receive less care after acute ischemic stroke (AIS) is unknown. We compared receipt of guideline-concordant procedures after AIS between older adults with pre-existing MCI and normal cognition. METHODS: Prospective study of 591 adults = 65 hospitalized for AIS between 2000 and 2014, and followed through 2015 using data from the nationally representative Health and Retirement Study, Medicare and American Hospital Association. We assessed pre-existing MCI (modified Telephone Interview for Cognitive Status score of 7-11) and normal cognition (score of 12-27). Primary outcome was a composite quality measure representing the number of 4 procedures (carotid imaging, cardiac monitoring, echocardiogram, and rehabilitation assessment) received within 30 days after AIS (ordinal scale with values of 0, 1, 2, 3-4). RESULTS: Among survivors of AIS, 26.9% had pre-existing MCI (62.9% were women, with a mean [SD] age of 82.4 [7.7] years), and 73.1% had normal cognition (51.4% were women, with a mean age of 78.4 [7.2] years). Patients with pre-existing MCI, compared to cognitively normal patients, had 39% lower cumulative odds of receiving the composite quality measure (unadjusted cumulative odds ratio, OR, 0.61 [95% CI, 0.43-0.87]; P = 0.006). However, this association became non-significant after adjusting for patient and hospital factors (adjusted cumulative OR, 0.83 [95% CI, 0.56-1.24]; P = 0.37). Lower cumulative odds of receiving the composite quality measure were associated with older patient age (adjusted cumulative OR per 1-year older age, 0.97 [95% CI, 0.95-0.99]; P = 0.01) and Southern hospitals (adjusted cumulative OR for South vs North, 0.54 [95% CI, 0.31-0.94]; P = 0.03). CONCLUSIONS: Differences in receipt of guideline-concordant procedures after AIS exist between patients with pre-existing MCI and normal cognition. These differences were largely explained by patient and regional factors associated with receiving less AIS care.





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