Baumanometer, what is it and how to choose it?

November 2, 2021

baumanometer is a tool used to measure blood pressure, and that is composed of an inflatable cuff to then release the artery under the cuff in a controlled manner. And a mechanical or mercury manometer to measure pressure.

It is often used in conjunction with a means to determine at what pressure blood flow is beginning and at what pressure it is not impeded. Manual sphygmomanometers are used in conjunction with a stethoscope.

A baumanometer is integrated with a cuff, a measuring unit, the mercury manometer and an inflation mechanism that can be a bulb. Along with a manually operated valve or an electrically powered pump.

A blood pressure reading consists of two numbers: systolic and diastolic. Systolic refers to systole and the phase when the heart pumps blood into the aorta. Diastolic refers to diastole, the period of rest when the heart fills with blood. With each heartbeat, the blood pressure rises to the systolic level and, between beats, falls to the diastolic level.

Blood pressure readings will vary based on age and many other factors in a person’s human body. Children and adults who are smaller or larger than the average size may need specially sized pressure cuffs.

Then join us to learn more about the baumanometer, an instrument that cannot be missing in any laboratory, such as the anemometer . Join us!

What is a baumanometer?

A baumanometer is a tool used to measure blood pressure, which is also known as a blood pressure meter. The word is derived from the Greek word ‘sphygmos’ which means to beat the heart or pulse and manometer means the device used to measure pressure or tension.

Generally speaking, the baumanometer is a device that measures blood pressure. It is made up of an inflatable rubber cuff, which is wrapped around the arm. A measuring device indicates the cuff pressure. A bulb inflates the cuff and a valve releases pressure. A stethoscope is used to listen to the sounds of arterial blood flow.

As the heart beats, blood flows through the arteries causing an increase in pressure, called systolic pressure, followed by a decrease in pressure as the heart’s ventricles prepare for another beat. This low pressure is called diastolic pressure.

Baumanometer description

A baumanometer consists of a hand-held bulb pump , a unit that displays a blood pressure reading, and an inflatable cuff that is usually wrapped around a person’s upper arm. Care must be taken to ensure that the size is appropriate for the person whose blood pressure is being taken.

This improves the accuracy of the reading. Children and adults with arms that are smaller or larger than the average size require specially sized handcuffs appropriate to their needs. It is also used to listen to the sounds of blood pressure. Some devices have the stethoscope already built in

History of the baumanometer

The invention of the baumanometer is attributed to  Samuel Siegfried Karl Ritter von Basch dating back to 1881. Later, a well-known scientist Scipione Riva-Rocci introduced a more versatile and easy-to-use version in 1896.

A further improvement to the tool that is already known, dates back to 1905, when the Russian physician Nikolai Korotkov included the option of measuring diastolic blood pressure.

Baumanometer etymology

The word baumanometer uses the combining form of sphygmo + manometer. The roots involved are the following: Greek σφυγμός sphygmos “pulse” plus the scientific term manometer which means “pressure meter”.

Most baumanometers were mechanical gauges with dials during the first half of the 20th century. Since the advent of electronic medical devices, names such as “meter” and “monitor” can also be applied, as the devices can automatically monitor blood pressure continuously.

Baumanometer parts

  • Bladder – This is an inflatable bag that is used to compress the arm to occlude the artery. To guarantee complete arterial compression, the bladders must have very specific size parameters.
  • Cuff : It is designed to support the bladder around the arm during measurement. For accurate measurement, the cuff must be properly designed with regard to placement and position.
  • Pressure Gauge – This is a device used to measure air pressure in mmHg. The manometer used in an aneroid sphygmomanometer consists of a watch-like movement to measure the air pressure applied to the cuff. To expand the diaphragm, the meter has a copper or beryllium series and there are gears to convert the linear movement of the diaphragm to get the readings in mmHg.
  • Valve : used as a deflation valve to control the cuff. This plays a vital role in obtaining an accurate measurement.
  • Bulb : used to pump air into the cuff.

Baumanometer types

Mercury baumanometer

It is the most conventional form of blood pressure device and is considered the gold standard. It consists of manually inflatable cuffs that are attached to the mercury-infused tubes. To obtain correct readings, the instrument should be kept on a flat surface and in an upright position.

If the instrument is accidentally dropped, there are great possibilities of risks. The advantage of this sphygmomanometer is that they can last a lifetime, are easy to use, and there is no need for recalibration. Due to its toxic content, it is banned in some countries.

Baumanómetro aneroide

Aneroid means “no liquid” and this instrument does not use mercury . It consists of a stethoscope that is attached to the cuff that is attached to a tube meter. To convert cuff pressure to gauge pressure, the gauge head has a mechanical part. The instrument needs to be recalibrated to avoid faulty readings.

They are in common use and may require calibration checks, unlike mercury gauges. Aneroid sphygmomanometers are considered safer than mercury sphygmomanometers, although cheap ones are less accurate. One of the main causes of calibration drift is mechanical shock. Wall- or bracket-mounted aneroids are not susceptible to this particular problem.

Automatic digital baumanometer

It is the most technologically advanced baumanometer . It consists of an electronic sensor to measure blood pressure and the readings are displayed on the digital monitor. To measure blood pressure, the instrument measures fluctuations in the arteries. They should be verified with a mercury sphygmometer to avoid inaccurate readings.

Baumanometers use electronic calculations instead of the ways that older tools give a blood pressure reading. To be able to use it, it is capable of being inflated manually, or set to be automatic. Both types are technologically electronic, easy to operate, and you don’t need a medical specialization, far from it. They measure accurately using oscillometric sensing, and making use of deformable membranes that are measured using differential capacitance. They generally include a microprocessor.

Baumanometer operation

To be able to use it, it will be gently and delicately placed, but always tight, on the upper part of the arm of the person whose blood pressure is to be measured. This artifact must be at the same height as the heart or it will not give an adequate reading. It is also important to note that the person whose pressure is being measured must have their arm supported so that they do not move. Otherwise, this will alter the result. However, even with the above clarification, there are versions of the device that may contain a fin or tail and must be measured in a different way. The device cuff must be correct for the person. If it is too small, it will only result in the pressure being read being too high. On the other hand, if the cuff is too high, the opposite will happen,

In the case that you want to do a clinical reading, it is recommended that you measure and record both arms so that if one of the initial measurements changes according to the other. If the arms give a different reading, the larger result is the one that will be used for future readings with the arterial measurement device.

Importance of the baumanometer

By observing the mercury in the column while releasing the air pressure with a control valve, the blood pressure values ​​can be read in mm Hg. The maximum pressure in the arteries during the cardiac cycle is the systolic pressure, and the lowest pressure is the diastolic pressure. A stethoscope is used in the auscultatory method.

Blood pressure measurement is used in the diagnosis and treatment of hypertension and in many other healthcare settings. Therefore, it is always important to have one of these devices at home. Or at least have a notion of how to use it. Since if you have a person at home who suffers from any of these conditions, then it should be used.

Dr. Loony Davis5
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Born and raised in Brussels in an English family, I have always lived in a multicultural environment. After several work experiences in marketing and communication, I came to Smart Water Magazine, which I describe as the most exciting challenge of my career.
I am a person with great restlessness and curiosity to learn, discover what I do not know, as well as reinvent myself daily, someone who is curious about life and wants to know. I enjoy sharing knowledge.
This is my personal project but I also collaborate in other blogs, it is the case, the most important web on water currently exists in the US, if you are interested you can read my articles here.

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