12-2 
12.2 Safety 
 WARNING 
z  Be sure to select the correct patient category setting for your patient before 
measurement. Do not apply the higher adult settings for pediatric or neonatal 
patients. Otherwise it may present a safety hazard. 
z  Do not measure NIBP on patients with sickle-cell disease or any condition where 
skin damage has occurred or is expected. 
z  Use clinical judgement to determine whether to perform frequent unattended 
blood pressure measurements on patients with severe blood clotting disorders 
because of the risk of hematoma in the limb fitted with the cuff. 
z  Do not use the NIBP cuff on a limb with an intravenous infusion or arterial 
catheter in place. This could cause tissue damage around the catheter when the 
infusion is slowed or blocked during cuff inflation. 
z  Do not use the NIBP cuff on the arm on the side of a mastectomy.     
z  NIBP reading can be affected by the measurement site, the position of the 
PATIENT, exercise, or the patient's physiologic condition. If you doubt the NIBP 
measurements, determine the patient’s vital signs by alternative means and then 
verify that the monitor is working correctly.   
z  Continuous CUFF pressure due to connection tubing kinking may cause blood flow 
interference and resulting harmful injury to the patient. 
 
 
12.3 Measurement Limitations 
Measurements are impossible with heart rate extremes of less than 40bpm or greater than 
240bpm, or if the patient is on a heart-lung machine. 
 
The measurement may be inaccurate or impossible:   
  If a regular arterial pressure pulse is hard to detect 
  With excessive and continuous patient movement such as shivering or convulsions 
  With cardiac arrhythmias 
  Rapid blood pressure changes 
  Severe shock or hypothermia that reduces blood flow to the peripheries 
  Obesity, where a thick layer of fat surrounding a limb dampens the oscillations coming 
from the artery