BC Biomedical NIBP-1010 Bedienungsanleitung PDF herunterladen (Seite 12)

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circulation within the artery above which the pressure sleeve (cuff) is placed. By gradual

reduction of pressure in the sleeve (cuff), the circulation in this artery is restored and the

values of blood pressure can be set by monitoring changes.

Fig. 1.4: Digital automatic tonometers

The palpation method is very simple and only allows for determining the value of the

systolic pressure. We place the sleeve (cuff) on the arm and inflate this sleeve (cuff) above the

value of the systolic pressure, which causes the constriction of the brachial artery. We press

the ball of the finger above the radial artery, just like in case we want to detect pulse. We

gradually deflate the sleeve (cuff) and in the moment we feel the first signs of pulse, we get

the value of the systolic pressure.

The auscultation method represents the second method for blood pressure

measurements. It is measured via classical tonometers. Again, we place the sleeve (cuff) on

the arm and inflate it, thus causing the constriction of the brachial artery, but this time, we

will also need a stethoscope. We place the stethoscope in the bend of the elbow, and by

gradual reduction of pressure in the sleeve (cuff), the brachial artery is released and the blood

can circulate again. The partial restoration of circulation through the artery, yet still decreased

by partial constriction, will allow for the hearing of the so called Korotkov murmurs

(phenomenons). Upon the first echo of these murmurs, we take the currently taken value as

the systolic pressure value. By further decreasing of the pressure in the sleeve, the artery

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BC Biomedical NIBP-1010 Bedienungsanleitung Seite 12