CNA Study Guide 2026

Measuring and recording vital signs (temperature, pulse, respiration, and blood pressure) is within the CNA's scope of practice. Tasks such as sterile dressing changes, IV medications, and diagnoses require higher licensure.

When taking a rectal temperature, the nurse aide must continuously hold onto the thermometer until it is time for removal. This prevents the thermometer from being accidentally dislodged, pushed in too far, or causing injury to the patient. Maintaining a secure hold ensures patient safety and an accurate temperature reading.

Diuretics increase urine production, leading to urinary frequency and urgency. This often causes residents to rush to the bathroom, which elevates the risk of tripping and falling, particularly in cluttered spaces or at night when it's dark.

The primary risk associated with a PICC line during bathing is infection, which can occur if the insertion site gets wet. It is crucial to cover the entire dressing and the catheter's exit site with a waterproof cover to keep it completely dry. Submerging the line or allowing water to seep under the dressing can introduce bacteria and lead to a serious bloodstream infection. While being careful with the arm is important, preventing water exposure is the most critical safety measure.

An unsteady resident is at a high risk of falls, especially in a wet and slippery environment like a shower. Providing a shower chair offers a stable and secure seating option, significantly reducing the risk of falling. This ensures the resident's safety while allowing them to maintain hygiene with assistance.

A CNA's role in rehabilitation is to support the resident in performing prescribed exercises safely and effectively. This includes providing verbal encouragement, ensuring proper body mechanics, and monitoring for signs of fatigue or pain. They act as a motivator and assistant, not a substitute for the resident's effort or a physical therapist.