Which of the following is an example of objective data that a technician would document?

a.A blood pressure reading of 128/82 mmHg
b.The patient's statement 'I feel nauseous'
c.A report of a headache described by the patient
d.The patient saying they slept poorly

Explanation

Objective data are measurable, observable facts such as a blood pressure reading, temperature, or visible wound drainage. Subjective data are what the patient reports, such as pain, nausea, or feelings. Documentation should clearly distinguish measured findings from patient statements.

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