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文件编号：NR-TP-0715-008
pressure measurement is impossible.
Obese patients
A thick layer of fat around a limb blocks the arterial oscillation so that it cannot reach the cuff.
The accuracy is lower than normal.
Environmental Requirements
Measure blood pressure should meet the environment range as follow: ambient humidity
15%～80%, no condensing, ambient temperature 0～45℃, altitude -500m~5000m. NIBP
performance and measurement accuracy will be affected beyond the range.
10.4 Measurement Procedure
10.4.1 Preparing for Measurement
a) Turn on the monitor, and check if it works properly;
b) Verify the patient mode, and make changes if improper;
c) Connect the blood pressure cuff extension tube to the monitor;
d) Select the cuff in accordance with the following method, make sure that the cuff is
completely deflated, and then tie it to the upper arm or thigh of the patient.
Determine the limb circumference of the patient.
Select the appropriate cuff (marked with appropriate limb circumference). Cuff
width should be 40 %( Neonate 50%) of the limb circumference or 2/3 of the upper
arm length. The length of the inflated part of the cuff should be sufficient for
50%~80% around the limb.
Place the cuff on the upper arm or thigh of the patient, and ensure that the marking
φ is located just above the appropriate artery. Make sure that the cuff does not wrap
too tight around the limb, or it may cause distal discoloration or even ischemia.
10.4.2 Patient posture requirements
1. Sit comfortable or lie down relax;
2. No crossing legs
3. Back and elbow should be supported;
4. The center of NIBP cuff and the right atrium are at in the same level.
5. Remind patients, no talking during measurement and try ro relax.
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