Final answer:
Soak the resident's hands for 5-10 minutes and the feet for 15-20 minutes in warm water before trimming the nails to soften them and help clean underneath.
Step-by-step explanation:
When a nursing assistant is preparing to trim a resident's fingernails or toenails, it is recommended to soak the hands or feet to soften the nails. This makes them easier to trim and minimizes the risk of causing any splits or tears in the nails. The appropriate soaking times can vary depending on the guidance you're following, but generally, soaking the resident's hands for 5-10 minutes and the feet for 15-20 minutes is sufficient. Soaking in warm water not only helps in softening the nails but also helps in cleaning under the nails, which can accumulate dirt and microorganisms.