The Relationship Between Cognitive Functioning and the JNC-8 Guidelines for Hypertension in Older Adults.
Guidelines for hypertension treatment by the Eighth Joint National Committee (JNC-8) in 2014 recommended a target systolic blood pressure (BP) of <150/<90 mmHg in persons older than 60 years, in contrast to the 2003 JNC-7 recommendations of systolic BP <140 mmHg. This study evaluated the implications of raising the BP target on cognitive functioning and conversion from normal cognition to mild cognitive impairment (MCI).



This was a longitudinal study of individuals older than 60 years enrolled in the NIH-NIA Alzheimer's Disease Centers. All had normal cognition at baseline. 453 participants were taking BP medications and had readings of <140/<90 mmHg at four annual visits (reference group). Two other groups consisted of participants with either systolic BP of 140-149 mmHg (n = 112) or ≥150 mmHg (n = 280) on three or four annual visits.



Compared with the reference and the 140-149 mmHg groups, those with BP ≥150 mmHg exhibited poorer cognitive status by Year 4 on the Mini-Mental State Exam, and they had a higher risk of conversion to MCI. The 140-149 mmHg exhibited poorer performance than the reference group on domains assessing attention and executive functioning. In contrast, their performance was not significantly different from those with BP ≥150 mmHg.



Persons with BP ≥150 mmHg show a faster global cognitive decline and transition to MCI than those with lower BP readings. However, the poor cognitive performance in the attention and executive functioning domains for the 140-149 mmHg group indicates the need for further research evaluating the newer recommended cutoff.
Department of Neurology and fgoldst@emory.edu.
Felicia C
FC
Goldstein
Department of Neurology and.|Department of Medicine, Emory University School of Medicine, Atlanta, Georgia.
Ihab M
IM
Hajjar
Department of Neurology and.
Callie B
CB
Dunn
Department of Neurology and.
Allan I
AI
Levey
Department of Neurology and.
Whitney
W
Wharton
D000368:Aged; D001288:Attention; D060825:Cognitive Dysfunction / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D015331:Cohort Studies; D056344:Executive Function; D005260:Female; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000175:diagnosis* / Q000523:psychology*; D008297:Male; D008875:Middle Aged; D017410:Practice Guidelines as Topic; D012307:Risk Factors
Cognitive functioning; Hypertension; JNC-8 Guidelines; Mild cognitive impairment; Older adults
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