A client with schizophrenia returns to the clinic two weeks after receiving a prescription for haloperidol. To assess for neuroleptic malignant syndrome (NMS), which information is most important for the nurse to obtain during this visit?

A. Current vital signs are essential for assessing for neuroleptic malignant syndrome (NMS), a potentially life-threatening side effect of antipsychotic medications like haloperidol. Vital signs such as temperature, blood pressure, heart rate, and respiratory rate are crucial indicators of NMS. B. While monitoring white blood cell count may be important for detecting infections or adverse reactions to medications, it is not specific to assessing for NMS. C. Monitoring 24-hour urinary output may be important for assessing renal function but is not specific to assessing for NMS. D. Monitoring blood sugar levels may be important for clients with diabetes or those at risk of hyperglycemia due to medication effects, but it is not specific to assessing for NMS.