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Quantifying Cognitive Decrements Caused by Cranial Radiotherapy

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Published on: October 18, 2011

Chemotherapy-related change in cognitive function: a conceptual model.

Lisa M Hess¹, Kathleen C Insel

¹The College of Medicine, the Arizona Cancer Center, The University of Arizona, Tucson.

Oncology Nursing Forum

|September 20, 2007

Summary

Chemotherapy can impact cognitive function through cancer diagnosis stress and treatment effects. A conceptual model helps understand and address these "chemo-brain" changes in patients.

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Area of Science:

Oncology
Neuroscience
Psychology

Background:

Patients undergoing chemotherapy frequently report cognitive deficits, colloquially termed "chemo-brain."
These cognitive changes manifest as forgetfulness, absentmindedness, and difficulty focusing during daily activities.

Purpose of the Study:

To develop a conceptual model for understanding chemotherapy-related changes in cognitive function.
To synthesize existing knowledge on the relationships among concepts influencing cognitive function during chemotherapy.

Main Methods:

Systematic literature review across major health databases (MEDLINE, CINAHL, HealthStar, PsycINFO).
Examination of literature to identify and investigate relationships among concepts related to cognitive changes.

Main Results:

Cognitive function alterations may occur via two primary pathways: psychological distress from cancer diagnosis and direct physiological effects of chemotherapy.
The conceptual model integrates antecedents, moderators, mediators, and consequences relevant to chemotherapy-induced cognitive changes.

Conclusions:

A comprehensive conceptual model is essential for evaluating and intervening in patient cognitive complaints.
Further well-designed research is needed to continually refine the understanding of chemotherapy-related cognitive changes.