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Neuropsychological functioning among cardiac rehabilitation patients
D J Moser1, R A Cohen, M M Clark
1Miriam Hospital, Brown University School of Medicine, Providence, Rhode Island, USA.
Insights
Cardiac rehabilitation patients show subtle cognitive deficits, particularly in verbal fluency and memory, compared to healthy individuals. These impairments are linked to factors like low ejection fraction and hypertension.
Area of Science:
- Cardiology
- Neuropsychology
- Public Health
Background:
- Coronary heart disease shares pathophysiology with cerebrovascular disease and cognitive disorders.
- Prior research focused on specific cardiac issues, neglecting general cognitive function in cardiac patients.
- Cardiac rehabilitation (CR) patients represent a key population for studying these cognitive links.
Purpose of the Study:
- To investigate the neuropsychological functioning of patients in cardiac rehabilitation programs.
- To identify specific cognitive capacities and limitations in this patient group.
- To compare CR patients' cognitive performance against healthy controls.
Main Methods:
- Neuropsychological instruments were used to assess cognitive function.
- CR patients were compared to age-matched controls without cardiac or neurological history.
- CR patients were subgrouped by coronary artery bypass grafting, myocardial infarction, hypertension, and ejection fraction to examine factor-specific impacts.
Main Results:
- CR patients demonstrated poorer neuropsychological test performance than controls.
- Subtle deficits were observed in response generation, memory, verbal abstraction, and notably, verbal fluency.
- Impaired ejection fraction, hypertension, and prior coronary artery bypass graft correlated with greater neuropsychological deficits.
Conclusions:
- While not grossly impaired, many CR patients likely experience some neuropsychological dysfunction.
- Integrating neuropsychological screening into pre-CR assessments is recommended.
- Identifying cognitive impairments can personalize healthcare communication and goal setting for CR patients.
Purpose:
The underlying pathophysiology contributing to coronary heart disease also predisposes patients to cerebrovascular disease and associated cognitive disorders. Although prior studies have focused on the neuropsychological sequelae of specific cardiac problems, few have examined the associated cognitive capacities and limitations of typical cardiac patients. The current study was designed to examine neuropsychological functioning among a sample of cardiac rehabilitation (CR) patients.
Methods:
Using neuropsychological instruments, patients were compared in a CR program to age-matched outpatient control subjects who had no known history of cardiac or neurologic disease. Cardiac rehabilitation patients were then divided into dichotomous subgroups based on whether they had undergone coronary artery bypass grafting, had experienced a myocardial infarction, had hypertension, or had impaired ejection fraction. Neuropsychological functioning was examined relative to each of these factors.
Results:
Cardiac rehabilitation patients had poorer neuropsychological test performance than did control subjects, with subtle relative deficits on measures of response generation, memory, and verbal abstraction, and particularly verbal fluency. Low ejection fraction, hypertension, and prior coronary artery bypass graft were associated with greater relative neuropsychological impairments.
Conclusions:
Although CR patients were not grossly neuropsychologically impaired as a group, it appears highly likely that many within a given program exhibit some degree of neuropsychological dysfunction. Including neuropsychological screening as part of pre-CR testing would help to identify such patients. This information may help staff to impart health care information in a manner that is most effective for the individual patient and may also be useful in the formation of realistic goals.
