Distinguish subjective versus objective data in nursing documentation and give examples.

• A. Subjective data are patient-reported (nausea, pain); objective data are measurable (BP, temperature, lab results).
• B. Subjective data are numerical measurements; objective are feelings.
• C. Subjective data are observed signs; objective data are patient statements.
• D. Subjective data are always accurate; objective data are not.

Answer: (A)

Distinguishing subjective from objective data in nursing documentation hinges on where the information comes from and whether it can be measured by anyone other than the patient. Subjective data are the patient’s own reports of symptoms, feelings, and perceptions—nausea, pain intensity, dizziness. These are meaningful to care but cannot be measured directly by another person. Objective data are observable and measurable facts obtained through examination or instruments—blood pressure, temperature, lab results, wound appearance, edema, gait.

In practice, you blend both to form a complete picture. Subjective data tell you what the patient is experiencing and how it affects daily functioning, while objective data provide concrete evidence of physiologic status and any changes over time. For example, a patient may report severe pain, and you would document the pain rating while also noting a corresponding elevated heart rate or blood pressure that supports the severity of distress.

It’s not correct to say subjective data are numerical measurements or that objective data are feelings, since those definitions are flipped. Subjective data aren’t inherently always accurate, as reports can be influenced by perception or communication; objective data help verify and clarify the patient’s condition.