Taking Accurate Vital Signs

Vital signs are the first thing a nurse measures and the fastest objective read on how a client is doing.

Why vital signs matter

Temperature, pulse, respirations, blood pressure, and oxygen saturation give the quickest objective picture of a client's condition. A change in the trend often warns of deterioration before the client looks unwell.

Normal adult ranges

• Temperature: 36.5–37.5 °C (97.7–99.5 °F)
• Pulse: 60–100 beats per minute
• Respirations: 12–20 breaths per minute
• Blood pressure: below 120/80 mmHg
• Oxygen saturation: 95–100%

Measuring accurately

Let the client rest first — recent activity, pain, and anxiety all raise readings. Use the correct blood-pressure cuff size; a cuff that is too small reads falsely high. Count respirations without telling the client, or they will unconsciously change their breathing.

When to escalate

Report any reading outside normal limits — and report a worsening trend even when the value is still within range. Always compare to the client's own baseline.

Key takeaways

• The five vital signs are the fastest objective read on a client.
• Technique matters — rest first, correct cuff size, discreet respiration count.
• A trend away from baseline matters as much as a single abnormal value.