Which task is appropriate for an LPN to perform?

• A. Measure peak expiratory flow
• B. Administer IV antibiotics
• C. Interpret ABG
• D. Insert catheter

Answer: (A)

Measuring peak expiratory flow is a straightforward, noninvasive data collection task that fits an LPN’s role. It involves having the patient blow into a peak flow meter to obtain a numeric value, which the nurse can document and monitor over time. No advanced interpretation or invasive procedure is required.

Administering IV antibiotics involves starting IV access and delivering medications through IV lines, which generally falls outside the LPN scope and requires RN supervision or policy approval. Interpreting arterial blood gases requires analyzing complex acid-base data, something typically reserved for an RN or higher level of training. Inserting a catheter is an invasive sterile procedure with potential complications, commonly performed by an RN or under RN supervision in many settings.