(It's best to take your blood pressure from your left arm if you are right-handed. However, you can use the other arm if you have been told to do so by your healthcare provider.) Rest in a chair next to a table for 5 to 10 minutes. (Your left arm should rest comfortably at heart level.)
The sensitivity for the detection of hypertension was 90.6% when BP was measured only at right arm, and 83.4% when measured only at left arm. Corresponding sensitivity were 87.9% and 87.1% in men, and 95.4% and 76.9% in women.
Traditionally, healthcare providers have taken blood pressure readings on the left arm. That's because the heart sits slightly to the left of the midline in your chest. The body's largest blood vessel, the aorta, exits the left side of the heart and transports blood through blood vessels throughout the body.
It's actually quite normal. A difference of more than 10 points, though, could suggest trouble. In younger people, side-to-side differences in blood pressure can occur when a muscle or something else compresses an artery supplying the arm, or by a structural problem that prevents smooth blood flow through an artery.
Blood pressure has a daily pattern. Usually, blood pressure starts to rise a few hours before a person wakes up. It continues to rise during the day, peaking in midday. Blood pressure typically drops in the late afternoon and evening.
Blood pressure in the right arm was consistently higher than that in the left arm regardless of the handedness, and the difference was still observed at visit 2.
Your health care provider might recommend taking your blood pressure at the same times each day. Don't measure your blood pressure right after you wake up. You can prepare for the day, but don't eat breakfast or take medications before measuring your blood pressure.
Practice stress relief
For example, breathe deeply and exhale slowly. Try a few of these breaths before your blood pressure reading. Reciting a poem or verse in your mind may help you relax, too.
Blood Pressure Cuff Placement
If the cuff is too small, it can add 2 to 10 points to your bp measurement. Be sure to roll up your sleeve for a blood pressure test and also let your doctor know if the cuff feels too tight around your arm.
A repeated difference of more than 10 mm Hg in blood pressure measurement between the arms can be a sign of a health problem such as: Blocked arteries in the arms, known as peripheral artery disease. Diabetes.
In summary
A difference of greater than 10 points may indicate a health condition. Some causes of a blood pressure difference between arms include peripheral arterial disease, diabetes, heart defect, dissection of the aorta, and kidney disease.
Blood Pressure Cuff Placement
If the cuff is too small, it can add 2 to 10 points to your bp measurement. Be sure to roll up your sleeve for a blood pressure test and also let your doctor know if the cuff feels too tight around your arm.
For 30% of them, the systolic pressure—the first number of a blood pressure reading—was 5 mm Hg or more different from the office reference measurement. The diastolic pressure (second number) was similarly inaccurate. "In one patient, the pressure was off by 21 mm Hg," Dr. Hiremath says.
Q. When I am monitoring my blood pressure, which number is most important — top, bottom, or both? A. While both numbers in a blood pressure reading are essential for diagnosing and treating high blood pressure, doctors primarily focus on the top number, also known as systolic pressure.
Call 911 or emergency medical services if your blood pressure is 180/120 mm Hg or greater and you have chest pain, shortness of breath, or symptoms of stroke. Stroke symptoms include numbness or tingling, trouble speaking, or changes in vision.
Your first blood pressure reading will almost always be higher than the second due to a wide range of factors, both environmental and psychological. These factors include white coat syndrome, stress, and having a full bladder.
Acute meal ingestion, caffeine or nicotine use can all affect BP readings, leading to errors in measurement accuracy. If the patient has a full bladder, that can lead to an error in systolic BP of up to 33 mm Hg, and the white-coat effect can have an error of up to 26 mm Hg.
At the beginning, measure your blood pressure at least twice daily. Take it first in the morning before eating or taking any medications. Take it again in the evening. Each time you measure, take two or three readings to make sure your results are the same.
The cost of these small machines has dropped, they are easy to use, and they're accurate. To help your doctor determine if you have high blood pressure, I recommend making two measurements per day, one in the morning and one in the evening, for a week.
It is recommended to wait at least 1 minute between blood pressure (BP) readings.
Take your blood pressure at the same time every day. Take at least two readings, 1 or 2 minutes apart.
Perhaps the most common mistake in blood pressure measurement is allowing patients to sit or lie with their arms hanging by their side, since when the upper arm is below the level of the right atrium, the readings will be too high. If the arm is unsupported and held up by the patient, pressure will be even higher2.