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Cognitive decline faster after coronary heart disease event, not before: JACC
Cognitive decline is faster after the incident coronary heart disease (CHD) event, not before, pointed out a study published in the Journal of Americal School of Cardiology.
The study showed that incident CHD was associated with accelerated cognitive decline after, but not before, the event and it emphasized that long term cognitive deterioration associated with CHD should be noted. In CHD patients in the years following the event, careful monitoring of cognitive function is warranted.
Prior studies have shown a connection between cognitive decline and CHD but the temporal pattern of cognitive decline before and after incident CHD remained unknown until this study came out with the findings that have ascertained the cognitive trajectory before and after CHD.
This study included 7,888 participants (average age 62.1 ± 10.2 years) with no history of stroke or incident stroke during follow-up from the English Longitudinal Study of Ageing. Participants underwent a cognitive assessment at baseline (wave 1, 2002 to 2003), and at least 1 other time point (from wave 2 [2004 to 2005] to wave 8 [2016 to 2017]). Incident CHD was identified as a diagnosis of myocardial infarction and/or angina during follow-up.
Key findings of the study
- Incident CHD was associated with accelerated cognitive decline during a median follow-up of 12 years.
- The annual rate of cognitive decline before CHD diagnosis among individuals who experienced incident CHD was similar to that of participants who remained CHD-free throughout follow-up.
- No short-term cognitive decline was observed in participants with CHD diagnosis after the event.
- In the years following CHD diagnosis, global cognition, verbal memory, and temporal orientation scores declined significantly faster than they did before the event, after multivariable adjustment.
- Sensitivity analyses yielded similar results.
Based on the results the authors concluded that incident CHD is correlated with accelerated cognitive decline after, but not before, the event. Attention should be drawn to the long-term cognitive deterioration related to CHD. Careful monitoring of cognitive function is warranted in CHD patients in the years following the event, they wrote.
For further reference, click on the link: DOI: 10.1016/j.jacc.2019.04.019
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