A study led by Johns Hopkins Medicine researchers concludes that commonly used ways of positioning the patient’s arm during blood pressure (BP) screenings can substantially overestimate test results and may lead to a misdiagnosis of hypertension.
What is the correct way to check blood pressure?
1. Preparation:
Rest: Sit calmly for at least 5 minutes before taking the measurement.
Avoid Caffeine and Smoking: For at least 30 minutes beforehand, avoid anything that can raise blood pressure, such as caffeine, exercise, or smoking.
Empty Bladder: A full bladder can affect the reading, so use the bathroom if needed.
2. Positioning:
Sit Comfortably: Sit in a chair with your feet flat on the ground and back supported. Avoid crossing your legs.
Arm Position: Rest your arm on a flat surface, like a table, with the upper arm at heart level.
Relaxed Posture: Keep your arm relaxed and supported, and try not to talk or move during the reading.
3. Cuff Placement:
Select the Right Cuff Size: The cuff should wrap snugly around your upper arm with enough room for two fingers to fit under the cuff edge.
Position the Cuff: Place the cuff on bare skin about an inch above the bend of your elbow.
Ensure Alignment: The cuff’s tube or marking should line up with the center of your arm’s inner side, which is above the brachial artery.
4. Taking the Reading:
Use a Validated Monitor: Automatic digital monitors are convenient and often recommended, especially those approved by medical standards.
Take Multiple Readings: Wait about 1-2 minutes between readings. For an accurate average, take at least two readings and record the numbers.
Record Each Reading: Note the date, time, and results to track trends over time.
5. Understanding Results:
Target Range: A normal blood pressure reading for most adults is around 120/80 mmHg, but consult a doctor for personal targets.
Seek Medical Guidance: If you consistently see elevated readings, check with a healthcare provider, as factors like anxiety, medication, and health conditions can influence blood pressure.
Taking readings under consistent conditions helps provide the most accurate picture of your blood pressure over time.
What is your Blood Pressure?
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