Exploring Cognitive Changes in High-Risk Cardiac Patients Receiving Dexmedetomidine and Evaluating the Correlation
Noor Anisah Abu Yazit1,2, Norsham Juliana1, Kamilah Muhammad Hafidz2
1Faculty Medicine and Health Science, Universiti Sains Islam Malaysia, 71800 Nilai, Negeri Sembilan, Malaysia.
Reviews in Cardiovascular Medicine
|September 4, 2024
Summary
Postoperative cognitive dysfunction (POCD) affects over 20% of high-risk patients after cardiothoracic surgery. Comprehensive cognitive assessment is crucial for accurate evaluation of these changes.
Area of Science:
- Cardiothoracic Surgery
- Neuroscience
- Cognitive Assessment
Background:
- Postoperative cognitive dysfunction (POCD) is a significant concern in high-risk cardiothoracic patients.
- The Mini-mental State Examination (MMSE) is a common clinical tool for POCD assessment.
- Standardized post-surgery cognitive assessment approaches are needed.
Purpose of the Study:
- To investigate post-operative cognitive changes in high-risk cardiothoracic patients.
- To establish a standardized approach for post-surgery cognitive assessment.
- To determine the prevalence of POCD at different time points after surgery.
Main Methods:
- Prospective cohort study design.
- Cognitive assessments conducted pre-surgery, at discharge, and at 6-week follow-up.
- Defined POCD as a reduction of more than 2.5 in MMSE score; analyzed data using T-test, ANOVA, correlation, and regression.
Main Results:
- 188 patients completed the study.
- POCD prevalence was 20.2% at discharge and 6.9% at 6-week follow-up.
- All cognitive tools showed significant differences between pre- and post-operative scores and moderate correlation with MMSE.
Conclusions:
- A significant prevalence of POCD exists in high-risk cardiothoracic surgery patients.
- Cognitive function significantly declines post-surgery, with varying recovery rates.
- Employing a battery of cognitive assessments is essential for comprehensive evaluation of post-operative cognitive changes.
