A nurse is preparing to administer labetalol 40 mg IV to a client. Available is labetalol 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Rationale:

A. A client who has decreased interleukin-6 levels: Interleukin-6 is a pro-inflammatory cytokine that may be elevated in depression, but its decrease is not an indicator for antidepressant use. It’s not routinely used to determine the need for antidepressant therapy in clinical practice.

B. A client who has decreased urine cortisol levels: Depression is more commonly associated with increased cortisol levels due to stress responses. Low cortisol may be seen in conditions like Addison's disease but does not typically guide antidepressant use.

C. A client who has decreased C-reactive protein levels: CRP is a nonspecific inflammatory marker. While elevated CRP has been observed in some individuals with depression, a decreased CRP level would not indicate the need for antidepressant therapy.

D. A client who has decreased serotonin levels: Low serotonin levels are closely linked to depression pathophysiology. Many antidepressants, such as SSRIs, target serotonin levels to relieve depressive symptoms, making this the most relevant indicator for antidepressant therapy.

Rationale:

A. Diabetes screening: Screening for diabetes is a form of secondary prevention, aimed at early identification and intervention to prevent disease progression in asymptomatic individuals.

B. Nutrition counseling: Nutrition counseling is a primary prevention strategy when used to promote health and prevent disease. It aims to reduce risk factors before illness occurs.

C. Family planning: Family planning falls under primary prevention as it involves proactive measures to prevent unintended pregnancies and support reproductive health.

D. Physical therapy: Physical therapy is a tertiary prevention measure focused on reducing the impact of an existing disease or injury. It helps restore function, prevent further disability, and improve quality of life in individuals with chronic or advanced conditions.