A Certified Nursing Assistant (CNA) plays a vital role in healthcare, providing essential patient support and assisting nursing staff. Key responsibilities include monitoring vital signs, helping with daily activities, and maintaining patient comfort. Required skills include empathy, communication, and attention to detail. CNAs typically work in hospitals, nursing homes, or clinics, collaborating with nurses and medical teams. Career progression may lead to roles like LPN or RN, fostering professional growth and enhanced patient care expertise.