A registered nurse has accepted a position as staff nurse on a psychiatric unit.
Which statement made by the nurse requires additional instructions regarding the therapies provided on the unit?

Choice A rationale

Primary prevention aims to prevent disease or injury before it ever occurs by modifying risk factors and promoting health. Teaching school-aged children about the dangers of drug and alcohol abuse falls under this category as it is an intervention directed at a susceptible population to prevent the initial onset of substance use disorders and their related complications later in life, thus maintaining their current health status.

Choice B rationale

This is an example of tertiary prevention, which focuses on rehabilitation and minimizing the long-term effects of a chronic illness or disability. Assisting a person with a long history of mental illness to acquire money management skills helps to improve their functioning and quality of life, prevents further deterioration, and facilitates their optimal level of social integration despite the established mental health condition.

Choice C rationale

This is an example of tertiary prevention. Encouraging an amputee to talk about their feelings addresses the psychosocial consequences of a disability or illness that has already occurred. The goal is to limit the resulting disability by providing emotional support and coping mechanisms to prevent severe psychological distress and facilitate psychological adjustment and rehabilitation to the changed body image and life circumstances.

Choice D rationale

Genetic counseling for a couple who is expecting their first child is a form of primary prevention when it involves assessing the risk of inherited disorders and providing education on preventative measures or reproductive choices to avert the occurrence of a genetic condition in the fetus. This intervention is designed to prevent the development of a disease before its initial appearance.

Choice A rationale

A skull radiograph (X-ray) is a two-dimensional imaging technique that primarily visualizes bone structure and density, which is useful for identifying fractures, calcification, or foreign objects. It provides no information on the metabolic activity or blood flow of brain tissue, which are the biological substrates of brain function.

Choice B rationale

Magnetic resonance imaging (MRI) uses strong magnetic fields and radio waves to generate detailed anatomical images of soft tissues, including the brain. It provides excellent structural resolution (detecting tumors or lesions) but, in its standard form, offers limited direct, quantitative data on real-time cellular energy consumption or neurotransmitter activity, which characterize function.

Choice C rationale

Positron Emission Tomography (PET) scan is a nuclear medicine technique that uses a small amount of a radioactive tracer, such as fluorodeoxyglucose (FDG), to measure metabolic processes like glucose metabolism and regional cerebral blood flow. Since glucose is the brain's primary energy source, areas of higher uptake indicate greater neuronal activity, thus providing crucial functional information.

Choice D rationale

A Computed Tomography (CT) scan uses X-rays from multiple angles to create cross-sectional images of the body. It provides detailed structural information (e.g., hemorrhage, edema, atrophy) but, similar to MRI, does not offer direct, specific quantification of ongoing, real-time metabolic rate or neurotransmitter release, which are hallmarks of brain function.