Principles of Biomedical Technology (Principles of Biomedical Science)
Unit 2: Unit 2.1 Talk to Your DocPBS 2.1Biotechnology Research and Experiments

Collect and Chart Vital Signs

Use patient evidence to collect and chart vital signs without overclaiming.

Builds on (2 levels back)inferred · high confidence
  • Sign vs. symptom: Clinical data mixes measured findings with patient-reported history.
  • Normal range comparison: Students need a reference range or baseline to tell whether a value is concerning.

Prerequisites are inferred: pending teacher review.

Re-learn the skill with worked practice and clear examples.

Compare a measured value to its normal range to decide if it is normal.

Step 1: Read the table
The table lists the normal range for each vital sign.
Vital signNormal rangeUnit
Heart rate60-100beats per minute
Respiratory rate12-20breaths per minute
Temperatureabout 37degrees Celsius
Oxygen saturation95 or higherpercent
Vital signs reference table of normal ranges and units
Step 2: Compare
Check whether the measured value falls inside the normal range.
Practice

A patient's heart rate is charted as 80 beats per minute. Using the table, is this value inside the normal range?

Reviewed
Vital signNormal rangeUnit
Heart rate60-100beats per minute
Respiratory rate12-20breaths per minute
Temperatureabout 37degrees Celsius
Oxygen saturation95 or higherpercent
Vital signs reference table of normal ranges and units
  1. A.Yes, 80 is inside the normal range of 60-100
  2. B.No, 80 is below the normal range
  3. C.No, 80 is above the normal range
  4. D.There is no way to tell from the table
Show the worked solution ▾

Answer: A. Yes, 80 is inside the normal range of 60-100

  1. Step 1: Find the range: The table gives a heart-rate normal range of 60-100.
  2. Step 2: Compare: 80 is between 60 and 100, so it is inside the range.

Why it's right: The normal heart-rate range is 60-100, and 80 falls between them, so it is normal.

Why the others miss:
  • B: 80 is greater than 60, so it is not below the range.
  • C: 80 is less than 100, so it is not above the range.
  • D: The table gives the range, so the value can be checked.

Aligned to Biotechnology Research and Experiments · reading level ~grade 9

Where you'd see this
  • A nurse compares each measured vital sign to its normal range while charting.
Video library
Watch: Collect and Chart Vital Signs
Vital Signs Nursing: Respiratory Rate, Pulse, Blood Pressure, Temperature, Pain, Oxygen
RegisteredNurseRN · 13:28
Guided notes

Fill these in as you work through the lesson.

Big idea: Charting vital signs means recording each value in its correct unit and flagging any value outside the normal range.
Key terms: write the meaning
  • Vital sign (a basic body measurement like heart rate or temperature):  
  • Normal range (the expected values for a healthy person):  
  • Unit (how the value is measured, e.g. beats per minute):  
  • Out of range (a value outside the normal range that should be flagged):  
The rule

Chart each value in its correct  , compare it to the normal  , and flag any value outside the range.

Check yourself
  1. What unit goes with this vital sign? 
  2. What is the normal range? 
  3. Is the value inside or outside the range? 
Work one example

Use the vital-signs table to chart each value and flag the one outside its normal range.