BC Biomedical NIBP-1010 Bedienungsanleitung PDF herunterladen (Seite 11)



The efforts to replace mercury but to keep a similar design lead to the introduction of

so called pseudo-mercury tonometers. These are electronic tonometers, which do not have

autonomous evaluation algorithms, but they only depict the value of the current pressure on a

display or within a column of luminous diodes. This apparatus is depicted in Fig. 1.3.

Fig. 1.3: Digital pseudo-mercury tonometer, in which the mercury manometer was replaced

by digital imaging element, again with connected sleeve (cuff) with a ball.

Nearly the most common type today, which even ordinary people can come across, is

the electronic, automatic tonometer. These tonometers do not contain a mechanical element

for the pressure measuring, but they are equipped with an electronic pressure sensor, just like

the pseudo-mercury tonometers. They also have their own system for inflating the sleeve

(cuff), realized via a compressor and electronically controlled air relief valves. The electronics

inside guarantees overall measurement and evaluation of blood pressure, allows for the record

of profiles, and often also depicts trends, etc. These systems are at a very high level in terms

of user comfort, and we can say that all you need to do to measure is push the start button.

This apparatus is depicted in Fig. 1.4.



Bloodpressuremeasurement

 The actual measurement of blood pressure can be realized via several methods. For the

mercury and aneroid tonometers, there are two methods utilizable in practice - the palpation

method and the auscultation method. Before we start describing these methods, however, let’s

consider an essential fact which takes place during the measurement. Inflating the sleeve

(cuff) above a certain level of pressure (systolic pressure) causes constriction of the blood

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 111 112

Keine Kommentare

BC Biomedical NIBP-1010 Bedienungsanleitung Seite 11