North Carolina CNA Written Practice Exam 2025 - Free CNA Practice Questions and Study Guide

Documenting vital signs primarily involves recording the essential measurements of a patient's physiological state, specifically temperature, pulse, respiration, and blood pressure. Each of these parameters provides critical information regarding the overall health and stability of the patient.

Temperature indicates whether a patient has a fever or any signs of infection. Pulse measurements reveal heart rate and rhythm, which can indicate cardiovascular health. Respiratory rate assesses a patient's breathing function and potential respiratory distress. Blood pressure is vital for understanding cardiovascular health and perfusion status.

The other options, while relevant to patient care, do not specifically pertain to vital signs. Recording medication taken focuses on pharmacological treatment, food intake relates to nutritional status, and documenting patient mood and behavior covers psychological and emotional well-being. Each of these aspects is important in holistic patient assessment, but they do not fall under the strict definition of vital signs, which are specifically physiological measurements. Thus, the correct answer accurately reflects what vital signs documentation entails.