A nurse is caring for a client who is receiving acute care for the treatment of a substance use disorder. With which of the following actions is the nurse demonstrating the ethical principle of veracity?

A. Cognitive behavioral therapy (CBT) is a commonly used psychotherapy approach for bipolar disorder. Attending a CBT class typically does not require specific informed consent beyond the general consent for treatment, as it involves non-invasive, non-experimental therapeutic techniques aimed at improving coping skills and managing symptoms. In most cases, attending therapy sessions like CBT is considered part of routine care for mental health conditions.
B. Experimental medications involve drugs or treatments that are not yet approved by regulatory agencies (such as the FDA in the United States) for general use. For a client to participate in a clinical trial or receive an experimental medication, they must provide explicit informed consent after being informed about the potential risks, benefits, and uncertainties associated with the treatment. This process ensures that the client understands they are participating in research and not receiving standard care.
C. Participating in a group exercise program is generally considered a routine therapeutic intervention aimed at promoting physical health and well-being. While informed consent is important for all interventions, including exercise programs, it typically involves providing general information about the program's goals, activities, and any potential risks. Clients are not consenting to experimental treatments or procedures that go beyond standard exercise protocols.

D. Light therapy, also known as phototherapy, is a treatment often used for seasonal affective disorder (SAD) and other mood disorders. It involves exposure to specific wavelengths of light to regulate circadian rhythms and improve mood. While light therapy is a specialized treatment, it is a standard intervention for mood disorders and does not typically require separate informed consent beyond what is provided for standard medical treatments.

A. Monitoring liver enzymes (AST, ALT) is typically not directly related to lithium therapy. Elevated liver enzymes may indicate liver damage from various causes, such as hepatitis or medication toxicity, but it is not a routine monitoring parameter for lithium.
B. Lithium can decrease the excretion of uric acid, potentially leading to elevated levels. Monitoring uric acid levels helps to detect hyperuricemia, which may contribute to conditions like gout. It's important to monitor this parameter periodically during lithium therapy.
C. ESR is a nonspecific marker of inflammation and is not specifically monitored in relation to lithium therapy. It is used to diagnose or monitor conditions like infections, autoimmune diseases, or certain cancers, but it does not directly relate to lithium use.
D. Monitoring serum sodium levels is crucial during lithium therapy because lithium can affect renal function and electrolyte balance, including sodium levels. Hyponatremia is a potential adverse effect of lithium, and regular monitoring helps detect and manage this condition promptly.