Better adherence to treatment recommendations in heart failure predicts improved cognitive function at a one-year follow-up

• Published in: Journal of clinical and experimental neuropsychology 2014-10, Vol.36 (9), p.956-966
• Main Authors: Alosco, Michael L., Spitznagel, Mary Beth, Cohen, Ronald, Sweet, Lawrence H., Josephson, Richard, Hughes, Joel, Rosneck, Jim, Gunstad, John
• Format: Article
• Language: English
• Subjects: Adult and adolescent clinical studies; Aged; Aged, 80 and over; Analysis of Variance; Biological and medical sciences; Cardiology. Vascular system; Cognition Disorders - diagnosis; Cognition Disorders - psychology; Cognitive function; Cross-Sectional Studies; Depression - etiology; Female; Follow-Up Studies; Heart; Heart failure; Heart Failure - complications; Heart Failure - psychology; Heart Failure - therapy; Heart failure, cardiogenic pulmonary edema, cardiac enlargement; Humans; Longitudinal; Male; Medical sciences; Mental Status Schedule; Middle Aged; Neuropsychological Tests; Organic mental disorders. Neuropsychology; Patient Compliance - psychology; Predictive Value of Tests; Psychology. Psychoanalysis. Psychiatry; Psychopathology. Psychiatry; Regression Analysis; Self Report; Treatment adherence
• ISSN: 1380-3395; 1744-411X
• DOI: 10.1080/13803395.2014.957167

Introduction: Treatment nonadherence is common in heart failure (HF) and is associated with poor health outcomes in this population. Recent cross-sectional work in heart failure and past work in other medical populations suggest that cognitive function is a key determinant of a patient's ability to adhere to treatment recommendations. However, it is also possible that treatment adherence is an important modifier and predictor of cognitive function, though no study has examined this possibility, and we sought to do so in a sample of heart failure patients. Method: A total of 115 patients with heart failure self-reported adherence to treatment recommendations. The Modified Mini Mental State Examination (3MS), Trail Making Test Parts A and B, and the California Verbal Learning Test-II (CVLT-II) assessed cognitive function. These procedures were performed at baseline and a 12-month follow-up. Results: Global cognition and memory abilities improved over the 12-month period. Regression analyses controlling for baseline and medical and demographic factors showed that better baseline treatment adherence predicted improved 12-month performances on the 3MS and CVLT-II. Adherence to medication and diet regimens and smoking abstinence emerged as the most important contributors. Conclusions: Better treatment adherence predicted improved cognition one year later in HF. Prospective studies that utilize objective assessments of treatment adherence are needed to confirm our findings and examine whether improved treatment adherence preserves cognitive function in heart failure.