How to measure blood pressure by hand
Other platforms explain it with text and video. In VMS you practice it on the patient.
A manual blood pressure is one of the first skills every program checks: nursing, EMS, PA and medical school. The reading only means something if the patient, the arm and the cuff are set up the same way every time. These steps follow the American Heart Association statement on blood pressure measurement and the open nursing textbooks listed at the end.
What you need
- Cuff of the right size
- Sphygmomanometer (aneroid or mercury-free)
- Stethoscope
- A chair with a back support
Step by step
Prepare the patient
Ask the patient to avoid caffeine, exercise and smoking for 30 minutes before, and to empty the bladder. Seat them with the back supported, feet flat on the floor and legs uncrossed, and let them rest quietly for at least 5 minutes. [1]
Introduce yourself and identify the patient
Say your name and role, confirm the patient with two identifiers (name and date of birth), explain what you will do and ask for permission. Clean your hands. [2]
Position the arm
Uncover the upper arm (no rolled sleeve squeezing it). Rest the arm on a table so the middle of the cuff is at the level of the heart. [1]
Pick the right cuff
The inflatable bladder should wrap around about 80% of the arm. Too small a cuff gives a falsely high reading; too large a cuff gives a falsely low one. [1]
Place the cuff
Wrap the cuff snugly about 2 to 3 cm (1 inch) above the elbow crease, with the artery mark over the brachial artery on the inside of the arm. [3]
Estimate the systolic by feel
Feel the radial pulse and inflate until it disappears. Add 30 mmHg to that number: this is how high you will inflate, so you do not miss an auscultatory gap. [3]
Listen and deflate slowly
Deflate fully, place the stethoscope over the brachial artery, inflate to your target and let the air out at 2 to 3 mmHg per second. Neither you nor the patient talks during the reading. [1]
Read the sounds
The first clear tapping sound (Korotkoff phase 1) is the systolic pressure. The point where the sounds disappear (phase 5) is the diastolic pressure. [1]
Repeat and average
Wait 1 to 2 minutes and measure again; use the average of two or more readings. On the first visit measure both arms and use the arm with the higher value from then on. [1]
Record and close
Write the values, the arm, the position and the cuff size. Tell the patient the result in plain words, thank them and clean your hands. [4]
Common errors
- Cuff too small for the arm: reading too high.
- Arm hanging below heart level: reading too high.
- Back not supported or legs crossed: reading too high.
- Talking during the measurement: reading too high.
- Deflating too fast: systolic read too low, diastolic too high.
Adult categories (AHA / ACC) [1]
| Systolic (mmHg) | Diastolic (mmHg) | |
|---|---|---|
| Normal | under 120 | and under 80 |
| Elevated | 120 to 129 | and under 80 |
| Stage 1 hypertension | 130 to 139 | or 80 to 89 |
| Stage 2 hypertension | 140 or higher | or 90 or higher |
Practice it in VMS
In VMS you do it on the patient: say who you are, clean your hands, put on the cuff, listen with the stethoscope and say the number out loud. The checklist scores every step, and in Teach mode Blocky tells you what comes next.
VMS cases that train this skill
Sources
- AHA Scientific Statement, Measurement of Blood Pressure in Humans (Hypertension, 2019)
- The Joint Commission, National Patient Safety Goals
- Open RN, Nursing Skills 2e (Chippewa Valley Technical College) (CC BY 4.0)
- OpenStax, Clinical Nursing Skills (CC BY 4.0)
Steps adapted from Open RN Nursing Skills 2e and OpenStax Clinical Nursing Skills, licensed under CC BY 4.0. Measurement rules from the AHA Scientific Statement on Blood Pressure Measurement (2019). VMS is not affiliated with these organizations. Updated: 2026-10-11.