18
Non-Invasive Blood Pressure (NIBP) Measurement
Non-Invasive Pressure Measurement Principles
Oscillometric method
The beat in the pulsation generated by the contraction of the heart is captured as the pressure inside
the cuff to measure the blood pressure. If the cuff wrapped around the upper arm is pressurized
sufficiently, the blood flow stops, but the beat of the pulsation is present and the pressure inside the cuff
receives this and oscillates. Next, as the pressure inside the cuff gradually decreases, the oscillation of
the pressure within the cuff gradually increases and reaches a peak. As the pressure within the cuff
decreases further, the oscillation decreases from its peak.
The pressure within the cuff and the relationship with the increase and decrease of the oscillation within
the cuff in this series of processes are stored into memory, calculations are carried out, and the blood
pressure value is determined.
The pressure within the cuff when the oscillation increases drastically is the systolic pressure and the
pressure within the cuff when the oscillation decreases drastically is the diastolic pressure. Also, the
pressure within the cuff when the oscillation peaks is taken as the average pulsation pressure.
The oscillometric method does not determine the blood pressure value instantly like a microphone type
automatic blood pressure gauge with the auscultation method, but rather determines it from the series
of change curves as explained above. Therefore, it is not easily affected by external noise, an electric
scalpel or other electro surgical instruments.
KOROTKOV SOUNDS
RADIAL PULSE
5 SEC
OSCILLATIONS IN CUFF PRESSURE
CUFF
PRESSURE
Comparison between the auscultatory, oscillometric and
palpatory methods of measuring blood pressure.
L.A. Geddes,
“The Direct and Indirect Measurement of Blood Pressure”, Year Book Medical Publishers, Inc. 1970
HBP-1300-E main.book Page 18 Thursday, February 11, 2016 11:39 AM
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Страница 308: ...HBP 1300 HBP 1300 HBP 1300 HBP 1300 d 1 2 P d 1 2 P d 2 3 P d P...
Страница 309: ...AR IEC60601 1 2 IEC 61000 4 6 IEC 61000 4 3 AM AM HBP 1300 d 1 2 P d 1 2 P d 2 3 P P d FM AM HBP 1300 HBP 1300 HBP 1300...
Страница 311: ...AR EMC EMC EN60601 1 2 2007 EN60601 1 2 2007 OMRON HEALTHCARE EN60601 1 2 2007...
Страница 312: ...NIBP EN1060 1 1995 A2 2009 EN1060 3 1997 A2 2009 ISO81060 1 2007 K5 93 42 EEC EN 1060...
Страница 313: ...AR AUTO 220 250 280 AUTO OFF ON OFF HBP 1300 PR NIBP x x x x x x LCD BF MDD M AUTO SYS 120 DIA 80 PR 60...
Страница 314: ...E3 OMRON E40 E41 E42 OMRON ABS...
Страница 315: ...AR E40 E2 E9 OMRON NIBP E1 OMRON GS CUFF E2...
Страница 316: ......
Страница 317: ...AR OMRON OMRON OMRON START STOP NIBP...
Страница 318: ...START STOP NIBP OMRON GS CUFF...
Страница 319: ...AR HBP 1300 80 v v 50 v v NIBP 70 v v 80 v v...
Страница 320: ...START STOP...
Страница 321: ...AR ON MODE MODE...
Страница 322: ...START STOP...
Страница 323: ...AR INDEX ARTERY RANGE INDEX ARTERY RANGE INDEX ARTERY...
Страница 324: ...GS CUFF XL GS CUFF L GS CUFF M GS CUFF S GS CUFF SS NIBP OMRON GS CUFF CUFF HOSE CUFF HOSE...
Страница 325: ...AR NIBP L A Geddes The Direct and Indirect Measurement of Blood Pressure Year Book Medical Publishers Inc 1970...
Страница 326: ...START STOP MODE E40 MODE START STOP...
Страница 327: ...AR MODE 280 AUTO 220 250 280 220 AUTO 280 250 220 AUTO MODE ON MODE START STOP OFF AUTO ON OFF...
Страница 328: ...LCD LCD E40 E40 OMRON...
Страница 329: ...AR...
Страница 330: ...LCD...
Страница 331: ...AR START STOP MODE NIBP BF...
Страница 333: ...AR OMRON M GS CUFF L HXA BAT 2000 9065797 0...
Страница 334: ...OMRON NIBP...
Страница 335: ...AR NIBP luer IBP SpO2 OMRON GS CUFF...
Страница 336: ......
Страница 337: ...AR...
Страница 338: ...SpO2...
Страница 339: ...AR IEC60601 1 2 OMRON...
Страница 340: ...OMRON MRI LCD...
Страница 341: ...AR...
Страница 342: ...OMRON OMRON OMRON OMRON OMRON OMRON OMRON OMRON...
Страница 343: ...NIBP HBP 1300 AR...