Four patients in a critical care unit have been diagnosed with Pseudomonas aeruginosa. The Infection Prevention and Control Department has determined that this is probably a nosocomial infection....

Four patients in a critical care unit have been diagnosed with Pseudomonas aeruginosa. The Infection Prevention and Control Department has determined that this is probably a nosocomial infection. Select the most appropriate intervention by the nurse. The nurse should:

1. Wear an N-95 mask when caring for these clients.

2. Initiate transmission-based precautions.

3. Initiate contact precautions.

4. Ensure that staff does not have artificial fingernails.