Is Mercury BP machine accurate?

BP Measurement Instruments and techniques have direct effects on the accuracy of BP measurements. Mercury sphygmomanometers are the most accurate instruments, but their use is decreasing due to concerns about release of mercury into the environment.

Is electronic or manual blood pressure more accurate?

When measured by a trained professional, following AHA recommendations for blood pressure measurement, a manual instrument will produce very accurate results. Today, home digital BP monitors are VERY accurate, but they do have limitations.

Why digital blood pressure is not accurate?

After showing your blood pressure, the cuff will deflate on its own. With some machines, you must wait for 2 to 3 minutes before using it again. A digital blood pressure monitor will not be as accurate if your body is moving when you are using it. Also, an irregular heart rate will make the reading less accurate.

Is the difference between Mercury and digital blood pressure instruments significant?

Results Data analysis of 218 study subjects showed the mean difference of the mercury reading and the test device was much less for aneroid than that of the digital device for both systolic and diastolic blood pressure.

How accurate are aneroid blood pressure readings compared to mercury readings?

More than 89\% of aneroid readings and less than 44\% of the readings by digital device had absolute difference of 5mm Hg. when compared with the mercury readings for both systolic and diastolic blood pressure. Sensitivity and specificity of aneroid device was higher (86.7\% and 98.7\%) than digital device (80\% and 67.7\%).

How is blood pressure read on a digital blood pressure monitor?

Digital blood pressure monitors Digital blood pressure monitors are often used on the wrist, but they can also be placed on the finger or upper arm and are activated simply by pressing a button. They read the blood pressure automatically based on variations in the volume of blood in the arteries.

Is it safe to use mercury to measure blood pressure?

There are both risks and benefits to consider in recommending whether to retain use of mercury-containing devices, hitherto the “gold standard” for measuring blood pressure. 2. Why is knowing blood pressure important? High blood pressure is one of the biggest global health problems.