You should place it tight enough so that you can only slip two fingertips under the top edge of the cuff. Make sure your skin doesn't pinch when the cuff inflates.
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.
If a cuff is too small or too large, errors in measurement can occur. Adding to inaccuracy are automated devices that have not been tested for accuracy, which can account for errors in systolic BP.
It was shown that measurements taken on left and right arms will result in significantly different blood pressure readings (p < 0.001). It is therefore crucial to properly place the cuff at a snug fit on the patient's arm for each measurement procedure, to prevent false readings.
Check for accuracy
“If the systolic blood pressure (the top number) on your cuff is within 10 points of the monitor, then it's generally accurate,” he says. Most home blood pressure machines last for about two or three years. After that, check it at your doctor's office annually to make sure it's still accurate.
Blood pressure typically drops in the late afternoon and evening. Blood pressure is usually lower at night while sleeping. The blood pressure measurement at night is called nocturnal blood pressure.
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.
You should place it tight enough so that you can only slip two fingertips under the top edge of the cuff. Make sure your skin doesn't pinch when the cuff inflates.
Everyone's blood pressure rises and falls many times during the course of a single day, sometimes even within minutes. Many factors contribute to these changes, including physical activity, emotion, body position, diet (especially salt and alcohol intake), and sleep deprivation.
A new study revealed that the majority of home blood pressure monitors dispense inaccurate readings. This is extremely upsetting because high blood pressure is the leading cause of death and disability worldwide.
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.
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.
It's ideal to measure your blood pressure twice a day for two weeks leading up to a doctor's appointment, or following a change in medication. At each sitting, measure your blood pressure three times, but discard the first reading as it tends to be inaccurate. Write down the average of the second and third reading.
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.
Don't check your blood pressure too often.
Some people find that they become worried or stressed about small changes in their readings if they take them too often. Worrying can also raise your blood pressure in the short term, making your reading higher than it should be.
Expect variations between monitors.
Not all BP monitors are calibrated exactly alike, which can lead to differences in readings. Some monitors may also be unreliable. The Omada BP monitor is FDA-cleared and has been shown to be accurate within +/- 10mmHG in clinical testing.
The morning increase in blood pressure is usually seen between 6:00AM and noon (Figure 1). If the blood pressure rises too high, it can cause harmful effects.
Blood pressure is mostly a silent disease
Unfortunately, high blood pressure can happen without feeling any abnormal symptoms. Moderate or severe headaches, anxiety, shortness of breath, nosebleeds, palpitations, or feeling of pulsations in the neck are some signs of high blood pressure.
Anxiety, stress, drugs, alcohol, physical exercise, and a range of medical conditions such as sleep apnea and kidney disease can cause your blood pressure to fluctuate from high to low. It's normal to see some variance throughout the day but you should consult a doctor if you exhibit symptoms of labile hypertension.
This is most likely an irritation of the nerve, and should cause permanent damage to the nerve. The one major nerve in the upper arm is the brachial nerve and is located on the inside surface (the side that comes in contact with your chest) of the arm.
Arm position
Dependency of the arm below heart level leads to an overestimation of systolic and diastolic pressures and raising the arm above heart level leads to underestimation. The magnitude of this error can be as great as 10 mm Hg for systolic and diastolic pressures.
Incorrect cuff positioning introduces a systematic overestimation of auscultatory BP when the cuff is too small in relation to arm circumference but not when it is correctly sized. No systematic error was observed with oscillometric measurements obtained with a specially designed wide-range cuff.
It is recommended to wait at least 1 minute between blood pressure (BP) readings.