A certified nursing assistant (CNA) is a healthcare professional who provides essential support to patients in hospitals, nursing homes, and other medical facilities. They assist with daily activities such as bathing, dressing, and eating, ensuring that patients receive the care they need. CNAs also monitor patients' vital signs and report any changes to the nursing staff. To become a CNA, individuals must complete a state-approved training program and pass a certification exam. This role is crucial in the healthcare system, as CNAs help improve the quality of life for patients and support the work of registered nurses and other medical staff.