Postoperative cognitive dysfunction in elderly postcardiac surgery patients: progress in rehabilitation application research.
Zhen-Rong Zhang, Yang-Zheng Li, Xiao-Qing Wu and 4 others
PMID 39741908WHAT IT FOUND
This review outlines how to assess and manage cognitive decline after cardiac surgery.
It highlights that while cognitive training and exercise show some promise, evidence for long-term benefits in post-cardiac surgery patients is still emerging and often mixed.
Key findings
01Postoperative cognitive dysfunction is common after cardiac surgery, with prevalence ranging from 9% to 54%, and may be linked to dementia progression.
02Preoperative screening tools like MoCA and MMSE are recommended to identify at-risk patients, with MoCA being more accurate for mild impairment.
03Perioperative cognitive training and exercise may improve outcomes, but optimal duration and long-term effectiveness remain unclear.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
This is a narrative review, not a systematic review or meta-analysis, so the selection of studies may be biased. Most cited studies focus on short-term outcomes (POD) rather than long-term POCD. The evidence for specific interventions like TMS and VR in post-cardiac surgery populations is preliminary or lacking. The review notes that the pathophysiology of POCD is still not fully understood.
Declared interests
The authors declare financial support from the Medical Science and Technology Project of Zhejiang Province. No other conflicts of interest are explicitly stated.
The easy way to misread this
Do not assume that cognitive training or exercise interventions have proven long-term efficacy for preventing POCD after cardiac surgery. The review highlights that most evidence is short-term, mixed, or derived from non-cardiac populations, and optimal protocols are not yet established.