Before administering haloperidol for delirium, which factor should be evaluated as part of the medication assessment?

• A. Medication regimen
• B. Last stool
• C. Blood pressure
• D. Respiratory rate

Answer: (A)

Evaluating the existing medication regimen is essential before giving haloperidol for delirium. This step focuses on safety and appropriateness by checking for drug interactions, cumulative sedation, and effects on the heart’s rhythm. Haloperidol can interact with other CNS depressants, anticholinergic drugs, opioids, benzodiazepines, antidepressants, and antiarrhythmics, all of which can increase delirium risk, sedation, or cause QT prolongation and arrhythmias. Reviewing every medication, including OTC and herbal supplements, helps identify duplications, contraindications, or the need to adjust doses or choose safer alternatives.

Last stool, while clinically relevant to overall care, does not address medication safety for haloperidol. Blood pressure and respiratory rate are vital signs to monitor and assess patient status, but they aren’t the specific factor to evaluate in the medication list before administration.