Assessing cognitive function is an essential part of patient care. Nurses can use various tools and techniques to evaluate cognitive abilities. The Mini-Mental State Examination (MMSE) is a widely used tool that assesses aspects such as orientation, registration, attention, calculation, recall, and language. Additionally, nurses should observe patients for signs of cognitive impairment, such as confusion, disorientation, or memory lapses. Early detection of cognitive issues can lead to timely interventions and better patient outcomes.