Which of the following is NOT typically monitored when starting an antipsychotic treatment?

When initiating antipsychotic treatment, monitoring certain parameters is crucial to ensure the safety and well-being of the patient. Prolactin levels are often monitored because some antipsychotics can stimulate prolactin secretion, potentially leading to conditions like galactorrhea or hyperprolactinemia. Monitoring Body Mass Index (BMI) is essential, as weight gain is a common side effect of many antipsychotics, and evaluating BMI can help manage this aspect of treatment. Thyroid-Stimulating Hormone (TSH) levels might also be monitored in some cases, especially with certain antipsychotics that can affect thyroid function or if the patient has a history of thyroid issues.

In contrast, electrolytes are not typically a focus during the initial monitoring when starting antipsychotic medications unless there are other specific underlying health conditions that necessitate it. While maintaining electrolyte balance is essential in overall health, it is not directly influenced by the initiation of antipsychotic therapy in the same way that the other parameters are. Thus, monitoring electrolytes is less commonly emphasized compared to the other factors mentioned, making it the correct choice for this question.