Which parameter is routinely monitored for patients starting olanzapine?

Which parameter is routinely monitored for patients starting olanzapine?

• A. Liver enzymes
• B. Blood glucose
• C. Prolactin
• D. EKG changes

Answer: (C)

Starting olanzapine carries a notable risk of metabolic side effects, so monitoring focuses on metabolic parameters. The key reason to routinely check blood glucose is to detect hyperglycemia or diabetes early, since olanzapine can impair glucose tolerance and contribute to weight gain and dyslipidemia. Baseline and periodic measurements of fasting glucose (or HbA1c), along with weight/BMI and lipid levels, help identify developing metabolic syndrome promptly. Prolactin changes do occur with some antipsychotics, but with olanzapine it is not common enough to be a routine monitoring target. Prolactin is typically checked only if symptoms suggest hyperprolactinemia (such as galactorrhea or menstrual disturbances). Liver enzymes are monitored if there are signs of hepatic injury or existing liver concerns, and EKG changes are not routinely assessed unless there are specific cardiac risk factors or concomitant QT-prolonging medications.

Starting olanzapine carries a notable risk of metabolic side effects, so monitoring focuses on metabolic parameters. The key reason to routinely check blood glucose is to detect hyperglycemia or diabetes early, since olanzapine can impair glucose tolerance and contribute to weight gain and dyslipidemia. Baseline and periodic measurements of fasting glucose (or HbA1c), along with weight/BMI and lipid levels, help identify developing metabolic syndrome promptly.

Prolactin changes do occur with some antipsychotics, but with olanzapine it is not common enough to be a routine monitoring target. Prolactin is typically checked only if symptoms suggest hyperprolactinemia (such as galactorrhea or menstrual disturbances). Liver enzymes are monitored if there are signs of hepatic injury or existing liver concerns, and EKG changes are not routinely assessed unless there are specific cardiac risk factors or concomitant QT-prolonging medications.