CNA Practice Exam Prep: Full Practice Test & Study Guide

During a bed bath, the perineum should be the last area washed by the nursing assistant. This practice is important for maintaining hygiene while also showing respect for the resident's dignity. Since the perineal area is sensitive and can harbor bacteria, washing it last helps to prevent any potential contamination to other areas of the body. This technique reflects standard infection control practices, ensuring that any washcloth or water used on the perineal area does not come into contact with areas that have already been cleaned.

In contrast, other areas of the body, such as the arms, back, and face, are typically washed earlier in the bathing process, allowing a smooth flow from the more general areas to the more private, sensitive areas, which should be treated with special care.