Which assessment tool can be used to evaluate pain in non-verbal children?

The FLACC scale is an appropriate assessment tool for evaluating pain in non-verbal children, as it was specifically designed for children who are unable to communicate their pain verbally. The acronym FLACC stands for Face, Legs, Activity, Cry, and Consolability, where each category has a set of criteria that the caregiver or clinician can observe. By scoring these criteria, healthcare providers can quantify the child's pain levels based on their physical and emotional responses.

While the Wong-Baker FACES scale can be useful for children who are able to express themselves with a degree of understanding, it requires verbal communication or the ability to point to a facial expression to convey their pain level. Therefore, it is less suitable for non-verbal children compared to the FLACC scale.

The Numerical Rating Scale (NRS) is another tool designed for older children and adults who can rate their pain on a scale of 0 to 10; thus, it is not applicable for non-verbal children as well. Therefore, the use of the FLACC scale is the most fitting choice for assessing pain in this population.