Which of the following is considered objective data in patient assessment?

• A. Patient's report of pain level
• B. Blood pressure reading
• C. Patient's mood description
• D. Narrative from family members

Answer: (B)

Objective data refers to measurable or observable information that is not influenced by personal feelings or opinions, making it a vital component of patient assessment. Blood pressure readings exemplify objective data, as they provide quantifiable information that can be verified through physical measurement and is universally understood in the clinical context. This type of data is critical for assessing a patient's cardiovascular status and overall health.

In contrast, the other options consist of subjective interpretations or impressions. The patient's report of pain level and mood description are inherently personal and can vary greatly from one individual to another. They rely on the patient’s subjective experience and feelings, making them subjective data. Narratives from family members can provide valuable insight into a patient's condition but are also subjective, reflecting the family’s perspective rather than a measurable fact. Thus, these alternatives do not fit the definition of objective data that is required in a clinical assessment.