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Updated: Feb 28, 2026
07:30
Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
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Hypertension and Risk of Post-Operative Cognitive Dysfunction (POCD): A Systematic Review and Meta-Analysis.
I Feinkohl1, G Winterer2, T Pischon1,2,3
1Molecular Epidemiology Research Group, Max-Delbrueck-Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany.
Summary
Hypertension does not appear to increase the risk of post-operative cognitive dysfunction (POCD). However, further research is needed due to study limitations, particularly in male populations.
Area of Science:
- Medical research
- Clinical epidemiology
- Nephrology
Background:
- Post-operative cognitive dysfunction (POCD) is common after major surgery.
- Hypertension is a known risk factor for age-related cognitive decline.
- The link between hypertension and POCD risk remains unclear.
Purpose of the Study:
- To systematically review and meta-analyze the available evidence on hypertension as a risk factor for POCD.
- To evaluate the association between hypertension and the incidence of POCD.
Main Methods:
- Systematic literature search of PubMed, Ovid SP, and Cochrane Database.
- Inclusion of longitudinal studies reporting hypertension and POCD outcomes.
- Meta-analysis of relative risks or odds ratios using fixed-effects models.
Main Results:
- Twenty-four studies involving 4317 patients were analyzed.
- Overall, hypertension was not significantly associated with POCD risk (RR 1.01, p=0.82).
- A significant association was found in studies with >75% males, showing a 27% increased POCD risk (RR 1.27, p=0.005).
Conclusions:
- Current evidence does not support hypertension as a general risk factor for POCD.
- Limitations include non-hypothesis-driven studies and lack of confounder adjustment.
- Further systematic investigations are warranted to clarify hypertension's role in POCD epidemiology.
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